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<blockquote data-quote="Bob Blaylock" data-source="post: 211748" data-attributes="member: 16749">Nikon D3200, with the stock 18-55mm ƒ3.5-5.6 “kit lens”.A short time ago, I took this picture of a dandelion seed head.&nbsp; I was rather alarmed to see the way it came out distorted.[ATTACH]57289[/ATTACH]&nbsp; I was able to fix it in PhotoShop:[ATTACH]57290[/ATTACH]&nbsp; A few attempts, just now, to reproduce this distortion by taking a few other pictures at similar range were not successful.&nbsp; It seems like something odd and irreproducible that happened just on this one occasion.&nbsp; Is there anything useful or otherwise interesting that anyone can tell me about this?&nbsp; Is there any normal, credible or why it would only do so explanation as to why this lens would ever produce this sort of distortion?&nbsp; Why only this once, and not when I later try to reproduce the effect?&nbsp; Is there any reason to fear that this might indicate something wrong with my lens or my camera?&nbsp; How might I be able to reproduce this effect?&nbsp; How might I be able to prevent it?&nbsp; It occurs to me now, that if the dandelion were in very rapid motion, this is the sort of distortion that a focal plane shutter would produce via the “rolling shutter” effect.&nbsp; But the dandelion was not in such motion.&nbsp; I was in a rather unstable position when I took this picture, so I might not have been holding the camera quite as solidly still as I would like.&nbsp; Is it plausible that this is a result of ordinary camera shake?&nbsp; The shutter speed was 1/500 of a second.&nbsp; Here are the EXIF data from the original image file:[code]ExifTool Version Number&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 9.37File Name&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : CSC_4977.JPGDirectory&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : .File Size&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 11 MBFile Modification Date/Time&nbsp; &nbsp;&nbsp; : 2013:10:25 15:42:38-07:00File Access Date/Time&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 2013:10:25 00:00:00-07:00File Inode Change Date/Time&nbsp; &nbsp;&nbsp; : 2013:10:25 15:42:38-07:00File Permissions&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : rwxrwxrwxFile Type&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : JPEGMIME Type&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : image/jpegExif Byte Order&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : Big-endian (Motorola, MM)Make&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : NIKON CORPORATIONCamera Model Name&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : NIKON D3200Orientation&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : Horizontal (normal)X Resolution&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 300Y Resolution&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 300Resolution Unit&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : inchesSoftware&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Ver.1.01Modify Date&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 2013:10:25 15:42:38Y Cb Cr Positioning&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : Co-sitedExposure Time&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 1/500F Number&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 8.0Exposure Program&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Not DefinedISO&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 100Sensitivity Type&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Recommended Exposure IndexExif Version&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 0230Date/Time Original&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 2013:10:25 14:57:46Create Date&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 2013:10:25 15:42:38Components Configuration&nbsp; &nbsp; &nbsp; &nbsp; : Y, Cb, Cr, -Compressed Bits Per Pixel&nbsp; &nbsp; &nbsp;&nbsp; : 4Exposure Compensation&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0Max Aperture Value&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 5.7Metering Mode&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : Multi-segmentLight Source&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : UnknownFlash&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : Auto, Did not fireFocal Length&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 55.0 mmMaker Note Version&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 2.10Quality&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : FineWhite Balance&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : AutoFocus Mode&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : AF-AFlash Setting&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : Flash Type&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : White Balance Fine Tune&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0 0WB RB Levels&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 1.9296875 1.35546875 1 1Program Shift&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0Exposure Difference&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0Compression&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : JPEG (old-style)Preview Image Start&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 13956Preview Image Length&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 24465Flash Exposure Compensation&nbsp; &nbsp;&nbsp; : 0ISO Setting&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 100Image Boundary&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 0 0 6016 4000External Flash Exposure Comp&nbsp; &nbsp; : 0Flash Exposure Bracket Value&nbsp; &nbsp; : 0.0Exposure Bracket Value&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 0Crop Hi Speed&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : Off (6080x4012 cropped to 6080x4012 at pixel 0,0)Exposure Tuning&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0Serial Number&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 3196964VR Info Version&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0100Vibration Reduction&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : OnVR Mode&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : NormalActive D-Lighting&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : AutoPicture Control Version&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0100Picture Control Name&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : VividPicture Control Base&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : VividPicture Control Adjust&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Full ControlPicture Control Quick Adjust&nbsp; &nbsp; : +2Brightness&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : +1Hue Adjustment&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : NoneFilter Effect&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : n/aToning Effect&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : n/aToning Saturation&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : n/aTimezone&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : -08:00Daylight Savings&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : YesDate Display Format&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : Y/M/DISO Expansion&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : OffISO2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 100ISO Expansion 2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : OffAuto Distortion Control&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : OffLens Type&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : G VRLens&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 18-55mm f/3.5-5.6Flash Mode&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Did Not FireShooting Mode&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : Single-FrameShot Info Version&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0224Firmware Version&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 1.01aNoise Reduction&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : OffWB GRBG Levels&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 256 494 347 256Lens Data Version&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0204Exit Pupil Position&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 97.5 mmAF Aperture&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 5.8Focus Position&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 0x11Focus Distance&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 0.32 mLens ID Number&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 154Lens F Stops&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 5.33Min Focal Length&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 18.3 mmMax Focal Length&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 55.0 mmMax Aperture At Min Focal&nbsp; &nbsp; &nbsp;&nbsp; : 3.6Max Aperture At Max Focal&nbsp; &nbsp; &nbsp;&nbsp; : 5.7MCU Version&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 156Effective Max Aperture&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 5.7Retouch History&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : NEF ProcessingImage Data Size&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 11069874Shutter Count&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 7158Flash Info Version&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 0105Flash Source&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : NoneExternal Flash Firmware&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : n/aExternal Flash Flags&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : (none)Flash Commander Mode&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : OffFlash Control Mode&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : OffFlash Compensation&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 0Flash GN Distance&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0Flash Color Filter&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : NoneFlash Group A Control Mode&nbsp; &nbsp; &nbsp; : OffFlash Group B Control Mode&nbsp; &nbsp; &nbsp; : OffFlash Group C Control Mode&nbsp; &nbsp; &nbsp; : OffFlash Group A Compensation&nbsp; &nbsp; &nbsp; : 0Flash Group B Compensation&nbsp; &nbsp; &nbsp; : 0Flash Group C Compensation&nbsp; &nbsp; &nbsp; : 0External Flash Compensation&nbsp; &nbsp;&nbsp; : 0Flash Exposure Comp 3&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0Flash Exposure Comp 4&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0Vari Program&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Close UpMulti Exposure Version&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 0100Multi Exposure Mode&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : OffMulti Exposure Shots&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 0Multi Exposure Auto Gain&nbsp; &nbsp; &nbsp; &nbsp; : OffHigh ISO Noise Reduction&nbsp; &nbsp; &nbsp; &nbsp; : NormalPower Up Time&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 2013:10:25 14:13:30AF Info 2 Version&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0100Contrast Detect AF&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : OffAF Area Mode&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Single AreaPhase Detect AF&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : On (11-point)Primary AF Point&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : CenterAF Points Used&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : CenterContrast Detect AF In Focus&nbsp; &nbsp;&nbsp; : NoFile Info Version&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0100Directory Number&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 100File Number&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 4977User Comment&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Bob BlaylockSub Sec Time&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 00Sub Sec Time Original&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 00Sub Sec Time Digitized&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 00Flashpix Version&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 0100Color Space&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : sRGBExif Image Width&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 6016Exif Image Height&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 4000Interoperability Index&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : R98 - DCF basic file (sRGB)Interoperability Version&nbsp; &nbsp; &nbsp; &nbsp; : 0100Sensing Method&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : One-chip color areaFile Source&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : Digital CameraScene Type&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Directly photographedCFA Pattern&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : [Red,Green][Green,Blue]Custom Rendered&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : NormalExposure Mode&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : AutoDigital Zoom Ratio&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 1Focal Length In 35mm Format&nbsp; &nbsp;&nbsp; : 82 mmScene Capture Type&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : StandardGain Control&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : NoneContrast&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : NormalSaturation&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : HighSharpness&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : HardSubject Distance Range&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : UnknownGPS Version ID&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 2.3.0.0GPS Latitude Ref&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : NorthGPS Longitude Ref&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : WestGPS Altitude Ref&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Above Sea LevelGPS Time Stamp&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 21:57:46GPS Satellites&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 07GPS Map Datum&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : GPS Date Stamp&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 2013:10:25Thumbnail Offset&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 38812Thumbnail Length&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 8403MPF Version&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0100Number Of Images&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 2MP Image Flags&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Dependent child imageMP Image Format&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : JPEGMP Image Type&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : Large Thumbnail (full HD equivalent)MP Image Length&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 789786MP Image Start&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 11142144Dependent Image 1 Entry Number&nbsp; : 0Dependent Image 2 Entry Number&nbsp; : 0Image Width&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 6016Image Height&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 4000Encoding Process&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Baseline DCT, Huffman codingBits Per Sample&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 8Color Components&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 3Y Cb Cr Sub Sampling&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : YCbCr4:2:2 (2 1)Aperture&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 8.0Auto Focus&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : OnBlue Balance&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 1.355469GPS Altitude&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 19 m Above Sea LevelGPS Date/Time&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 2013:10:25 21:57:46ZGPS Latitude&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 38 deg 27' 5.08&quot; NGPS Longitude&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 121 deg 25' 1.24&quot; WGPS Position&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 38 deg 27' 5.08&quot; N, 121 deg 25' 1.24&quot; WImage Size&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 6016x4000Lens ID&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : AF-S DX VR Zoom-Nikkor 18-55mm f/3.5-5.6GLens&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 18-55mm f/3.5-5.6 G VRPreview Image&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : (Binary data 24465 bytes, use -b option to extract)Red Balance&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 1.929688Scale Factor To 35 mm Equivalent: 1.5Shutter Speed&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 1/500Create Date&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 2013:10:25 15:42:38.00Date/Time Original&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 2013:10:25 14:57:46.00Modify Date&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 2013:10:25 15:42:38.00Thumbnail Image&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : (Binary data 8403 bytes, use -b option to extract)Circle Of Confusion&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 0.020 mmDepth Of Field&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 0.009 m (0.312 - 0.321)Field Of View&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 20.6 deg (0.11 m)Focal Length&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 55.0 mm (35 mm equivalent: 82.0 mm)Hyperfocal Distance&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 18.76 mLight Value&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; : 15.0[/code]</blockquote>

[QUOTE="Bob Blaylock, post: 211748, member: 16749"] Nikon D3200, with the stock 18-55mm ƒ3.5-5.6 “kit lens”. A short time ago, I took this picture of a dandelion seed head. I was rather alarmed to see the way it came out distorted. [ATTACH=CONFIG]57289._xfImport[/ATTACH] I was able to fix it in PhotoShop: [ATTACH=CONFIG]57290._xfImport[/ATTACH] A few attempts, just now, to reproduce this distortion by taking a few other pictures at similar range were not successful. It seems like something odd and irreproducible that happened just on this one occasion. Is there anything useful or otherwise interesting that anyone can tell me about this? Is there any normal, credible or why it would only do so explanation as to why this lens would ever produce this sort of distortion? Why only this once, and not when I later try to reproduce the effect? Is there any reason to fear that this might indicate something wrong with my lens or my camera? How might I be able to reproduce this effect? How might I be able to prevent it? It occurs to me now, that if the dandelion were in very rapid motion, this is the sort of distortion that a focal plane shutter would produce via the “rolling shutter” effect. But the dandelion was not in such motion. I was in a rather unstable position when I took this picture, so I might not have been holding the camera quite as solidly still as I would like. Is it plausible that this is a result of ordinary camera shake? The shutter speed was 1/500 of a second. Here are the EXIF data from the original image file: [code]ExifTool Version Number : 9.37 File Name : CSC_4977.JPG Directory : . File Size : 11 MB File Modification Date/Time : 2013:10:25 15:42:38-07:00 File Access Date/Time : 2013:10:25 00:00:00-07:00 File Inode Change Date/Time : 2013:10:25 15:42:38-07:00 File Permissions : rwxrwxrwx File Type : JPEG MIME Type : image/jpeg Exif Byte Order : Big-endian (Motorola, MM) Make : NIKON CORPORATION Camera Model Name : NIKON D3200 Orientation : Horizontal (normal) X Resolution : 300 Y Resolution : 300 Resolution Unit : inches Software : Ver.1.01 Modify Date : 2013:10:25 15:42:38 Y Cb Cr Positioning : Co-sited Exposure Time : 1/500 F Number : 8.0 Exposure Program : Not Defined ISO : 100 Sensitivity Type : Recommended Exposure Index Exif Version : 0230 Date/Time Original : 2013:10:25 14:57:46 Create Date : 2013:10:25 15:42:38 Components Configuration : Y, Cb, Cr, - Compressed Bits Per Pixel : 4 Exposure Compensation : 0 Max Aperture Value : 5.7 Metering Mode : Multi-segment Light Source : Unknown Flash : Auto, Did not fire Focal Length : 55.0 mm Maker Note Version : 2.10 Quality : Fine White Balance : Auto Focus Mode : AF-A Flash Setting : Flash Type : White Balance Fine Tune : 0 0 WB RB Levels : 1.9296875 1.35546875 1 1 Program Shift : 0 Exposure Difference : 0 Compression : JPEG (old-style) Preview Image Start : 13956 Preview Image Length : 24465 Flash Exposure Compensation : 0 ISO Setting : 100 Image Boundary : 0 0 6016 4000 External Flash Exposure Comp : 0 Flash Exposure Bracket Value : 0.0 Exposure Bracket Value : 0 Crop Hi Speed : Off (6080x4012 cropped to 6080x4012 at pixel 0,0) Exposure Tuning : 0 Serial Number : 3196964 VR Info Version : 0100 Vibration Reduction : On VR Mode : Normal Active D-Lighting : Auto Picture Control Version : 0100 Picture Control Name : Vivid Picture Control Base : Vivid Picture Control Adjust : Full Control Picture Control Quick Adjust : +2 Brightness : +1 Hue Adjustment : None Filter Effect : n/a Toning Effect : n/a Toning Saturation : n/a Timezone : -08:00 Daylight Savings : Yes Date Display Format : Y/M/D ISO Expansion : Off ISO2 : 100 ISO Expansion 2 : Off Auto Distortion Control : Off Lens Type : G VR Lens : 18-55mm f/3.5-5.6 Flash Mode : Did Not Fire Shooting Mode : Single-Frame Shot Info Version : 0224 Firmware Version : 1.01a Noise Reduction : Off WB GRBG Levels : 256 494 347 256 Lens Data Version : 0204 Exit Pupil Position : 97.5 mm AF Aperture : 5.8 Focus Position : 0x11 Focus Distance : 0.32 m Lens ID Number : 154 Lens F Stops : 5.33 Min Focal Length : 18.3 mm Max Focal Length : 55.0 mm Max Aperture At Min Focal : 3.6 Max Aperture At Max Focal : 5.7 MCU Version : 156 Effective Max Aperture : 5.7 Retouch History : NEF Processing Image Data Size : 11069874 Shutter Count : 7158 Flash Info Version : 0105 Flash Source : None External Flash Firmware : n/a External Flash Flags : (none) Flash Commander Mode : Off Flash Control Mode : Off Flash Compensation : 0 Flash GN Distance : 0 Flash Color Filter : None Flash Group A Control Mode : Off Flash Group B Control Mode : Off Flash Group C Control Mode : Off Flash Group A Compensation : 0 Flash Group B Compensation : 0 Flash Group C Compensation : 0 External Flash Compensation : 0 Flash Exposure Comp 3 : 0 Flash Exposure Comp 4 : 0 Vari Program : Close Up Multi Exposure Version : 0100 Multi Exposure Mode : Off Multi Exposure Shots : 0 Multi Exposure Auto Gain : Off High ISO Noise Reduction : Normal Power Up Time : 2013:10:25 14:13:30 AF Info 2 Version : 0100 Contrast Detect AF : Off AF Area Mode : Single Area Phase Detect AF : On (11-point) Primary AF Point : Center AF Points Used : Center Contrast Detect AF In Focus : No File Info Version : 0100 Directory Number : 100 File Number : 4977 User Comment : Bob Blaylock Sub Sec Time : 00 Sub Sec Time Original : 00 Sub Sec Time Digitized : 00 Flashpix Version : 0100 Color Space : sRGB Exif Image Width : 6016 Exif Image Height : 4000 Interoperability Index : R98 - DCF basic file (sRGB) Interoperability Version : 0100 Sensing Method : One-chip color area File Source : Digital Camera Scene Type : Directly photographed CFA Pattern : [Red,Green][Green,Blue] Custom Rendered : Normal Exposure Mode : Auto Digital Zoom Ratio : 1 Focal Length In 35mm Format : 82 mm Scene Capture Type : Standard Gain Control : None Contrast : Normal Saturation : High Sharpness : Hard Subject Distance Range : Unknown GPS Version ID : 2.3.0.0 GPS Latitude Ref : North GPS Longitude Ref : West GPS Altitude Ref : Above Sea Level GPS Time Stamp : 21:57:46 GPS Satellites : 07 GPS Map Datum : GPS Date Stamp : 2013:10:25 Thumbnail Offset : 38812 Thumbnail Length : 8403 MPF Version : 0100 Number Of Images : 2 MP Image Flags : Dependent child image MP Image Format : JPEG MP Image Type : Large Thumbnail (full HD equivalent) MP Image Length : 789786 MP Image Start : 11142144 Dependent Image 1 Entry Number : 0 Dependent Image 2 Entry Number : 0 Image Width : 6016 Image Height : 4000 Encoding Process : Baseline DCT, Huffman coding Bits Per Sample : 8 Color Components : 3 Y Cb Cr Sub Sampling : YCbCr4:2:2 (2 1) Aperture : 8.0 Auto Focus : On Blue Balance : 1.355469 GPS Altitude : 19 m Above Sea Level GPS Date/Time : 2013:10:25 21:57:46Z GPS Latitude : 38 deg 27' 5.08" N GPS Longitude : 121 deg 25' 1.24" W GPS Position : 38 deg 27' 5.08" N, 121 deg 25' 1.24" W Image Size : 6016x4000 Lens ID : AF-S DX VR Zoom-Nikkor 18-55mm f/3.5-5.6G Lens : 18-55mm f/3.5-5.6 G VR Preview Image : (Binary data 24465 bytes, use -b option to extract) Red Balance : 1.929688 Scale Factor To 35 mm Equivalent: 1.5 Shutter Speed : 1/500 Create Date : 2013:10:25 15:42:38.00 Date/Time Original : 2013:10:25 14:57:46.00 Modify Date : 2013:10:25 15:42:38.00 Thumbnail Image : (Binary data 8403 bytes, use -b option to extract) Circle Of Confusion : 0.020 mm Depth Of Field : 0.009 m (0.312 - 0.321) Field Of View : 20.6 deg (0.11 m) Focal Length : 55.0 mm (35 mm equivalent: 82.0 mm) Hyperfocal Distance : 18.76 m Light Value : 15.0[/code] [/QUOTE]

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