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About Eyelight

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About Eyelight
Biography:
I've been playing with photography for roughly 45 years. Dabbled in B&W lab work, developing film and prints. The bulk of my creative/professional experience was in the late 70's thru mid 80's, so all in film. Worked as a studio photographer in portraiture for a while in the early ‘80s. I've used a plethora of film and digital cameras in the last 24 years doing the work I do, and have usually carried some form of camera during the waking hours both for work and anything else that moves or not.

My current profession is as a thermographer, so my living is gained from capturing images, but just in a different wavelength and for a different purpose.

Really never stopped doing creative photography, but it has been restrained for a number of years, so more or less trying to catch up. Always liked Nikons, so picked up a D3200 a few years ago, Nikonites caught my eye and seemed like a good place to learn what I don’t know and share what I do.
Location:
Kentucky
Interests:
Enjoying Life Regardless of Life
Occupation:
Professional Thermographer
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Semi-Pro
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12-03-2016
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Recent Entries

Eyelight Plays with Depth of Field - Part 8: The shift in the near and the far.

by Eyelight on 07-13-2014 at 09:49 PM
These are charts depicting total DOF and the shift between the DOF in front of the focal point and the DOF in rear of the focal point. The calculations use the CoC (circle of confusion) of a DX sensor, though the trend appears similar for FX. Each chart uses a focus distance of 1 meter, the focal length listed above it and progresses thru the apertures
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Eyelight Plays with Depth of Field - Part 9: Magnification

by Eyelight on 07-12-2014 at 04:18 AM
Magnification is achieved by a combination of focal length and focus distance.

Took a few days to come up with the right equations to use DOF equivalent focal length & focus distance combinations. Basically started with the DOF equations for a series of focal lengths. Then determined an increase in distance that would result in the
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Updated 07-12-2014 at 08:07 PM by Eyelight

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Eyelight Plays with Depth of Field - Part 7: DOF Based on View Size

by Eyelight on 07-01-2014 at 06:25 AM
This comparison uses the same aperture (f/11) and same subject/view size (16.78”) with four different focal lengths.


  • The red line represents the width of the subject/view.
  • Positions a, b, c and d represent camera positions using the four focal lengths in the table.
  • Black lines represent angle of view for each focal length.
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Updated 07-01-2014 at 06:34 AM by Eyelight

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How-to

Eyelight Plays with Depth of Field - Part 6: See the Depth of Field

by Eyelight on 05-23-2014 at 05:18 AM
Thought this was an interesting shot in that the depth of field is clearly visible on the surface of the concrete. The bug's body is roughly 1/8" wide and barely fits in the depth of field.


Attachment 98536

Cropped view
Attachment 98537
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Thanks/Like Englischdude Thanks/liked this post

Updated 07-01-2014 at 06:48 AM by Eyelight

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Eyelight Plays with Depth of Field - Part 5

by Eyelight on 05-23-2014 at 05:01 AM
Note: This post was copied from the topic "What did you learn Today?" in Learning Photography Forum as it seemed more of a bloggy idea.

This may be common knowledge, but something my film camera provided better info than the D3200. So, continuing to deepen my grasp of the way DOF works and perhaps come up with an easier way for
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Updated 05-23-2014 at 05:11 AM by Eyelight

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