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Nikon DSLR Cameras
D750
Weird shake
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<blockquote data-quote="spb_stan" data-source="post: 672924" data-attributes="member: 43545"><p>Sigma has a history of firmware issues with Nikon so be sure to have the latest updates to the lens software. VR has its uses but also limits of effectiveness. Regardless of what the manufacturers claim there are fewer applications where it is best to have on than off. Outdoors in good light, shutter speeds are normally pretty high and VR actually increases blur faster than about 1/500. Worse blur almost always results when on a tripod or steady monopod. When panning it can degrade images. </p><p>Nikon VR generally has a fast settling time but suffers alike all in action shots where AF is continuously focusing. In the studio or with flash or strobes turn it off always. The subject is frozen by the very short burst of light so any slower period movement result is differences from shot to shot. </p><p>Only turn on VR when hand-holding with steady subjects(some vr has an Action setting for panning) in the 1/15-1/500 shutter range. Slower shutter speeds if not using flash really should be for very still subjects and tripod for sharp images. The manufacturers claim 4-6 stops of slower speed for hand holding but in the real world that is nonsense, a range of 6 stops is out of the shutter speed range where it is useful.Those are marketing stops not exposure stops.</p><p>Fast lenses wide open are hard enough to handle for crisp shots and good technique and a still subject play a more important role in getting those as sharp as possible. Fast apertures are primes usually, and many benefit from a simpler optical formula so produce very sharp images because they do not have the added variables of moving elements that VR adds</p><p>The only time VR might help with flash is when flash-subject metering is only down 1-2 stops below ambient, such as when using iTTL BL balance flash for fill. </p><p>Do a scan of random images in your gallery and not the shutter speeds, you might be surprised how many are out of the VR range of usefulness. Outside that range, it detracts from sharpness. All your action outdoor shots probably were shorter than 1/500 so were actually hurt by having VR turned on.</p></blockquote><p></p>
[QUOTE="spb_stan, post: 672924, member: 43545"] Sigma has a history of firmware issues with Nikon so be sure to have the latest updates to the lens software. VR has its uses but also limits of effectiveness. Regardless of what the manufacturers claim there are fewer applications where it is best to have on than off. Outdoors in good light, shutter speeds are normally pretty high and VR actually increases blur faster than about 1/500. Worse blur almost always results when on a tripod or steady monopod. When panning it can degrade images. Nikon VR generally has a fast settling time but suffers alike all in action shots where AF is continuously focusing. In the studio or with flash or strobes turn it off always. The subject is frozen by the very short burst of light so any slower period movement result is differences from shot to shot. Only turn on VR when hand-holding with steady subjects(some vr has an Action setting for panning) in the 1/15-1/500 shutter range. Slower shutter speeds if not using flash really should be for very still subjects and tripod for sharp images. The manufacturers claim 4-6 stops of slower speed for hand holding but in the real world that is nonsense, a range of 6 stops is out of the shutter speed range where it is useful.Those are marketing stops not exposure stops. Fast lenses wide open are hard enough to handle for crisp shots and good technique and a still subject play a more important role in getting those as sharp as possible. Fast apertures are primes usually, and many benefit from a simpler optical formula so produce very sharp images because they do not have the added variables of moving elements that VR adds The only time VR might help with flash is when flash-subject metering is only down 1-2 stops below ambient, such as when using iTTL BL balance flash for fill. Do a scan of random images in your gallery and not the shutter speeds, you might be surprised how many are out of the VR range of usefulness. Outside that range, it detracts from sharpness. All your action outdoor shots probably were shorter than 1/500 so were actually hurt by having VR turned on. [/QUOTE]
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Weird shake
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