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How to fix turtle shell glare?
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Jun 19, 2016 19:49:44   #
James R. Kyle Loc: Saint Louis, Missouri (A Suburb of Ferguson)
 
the f/stops here wrote:
James, thanks for the PS touch-up but the point of the image was: blocking the reflection with humor. My image is what I captured and not a manipulated photo. Guess I just wasn't very clear.


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No You were not very clear... Sorry to give advice as to the editing of your good photo here....

And - I am not really sure what you mean by "blocking the reflection with humor."

By the manipulation of any photograph is to not change what IS there, just to make it well and good to see - AND to perhaps place your feelings into a visible form -- If I really wish to place what I was feeling at the time of exposure I usually edit in a "Shades of Gray" - What some call Black and White. (However, usually a B&W photo is in all reality Shades of Gray.)

Sorry that I can not delete my editing of your photographic image. Perhaps the guardians of this site can make it possible for us to do that sometime in the near future.

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Jun 19, 2016 20:34:17   #
Reinaldokool Loc: San Rafael, CA
 
sakitson wrote:
Submission by mubashm reminded me of glare problem I encounter with turtles. On the rare occasion I get close enough to one, does anyone have experience with using an opaque screen to cut the glare and bring out patterning on turtle shells? Or any other ideas? Thanks.


This response is out of total ignorance and lack of experience. That said, one of the great features of the Polaroid filter is that it blocks reflections of about 35 degrees or so. If the turtle shell reflects the light, it may be possible to turn the filter in such a way as to enhance the image as you'd like it.

Most folk only use the polarizer to enhance the sky, but fishermen wear polaroid sunglasses so they can see the fish below the surface by blocking the reflections.

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Jun 20, 2016 08:23:38   #
OnDSnap Loc: NE New Jersey
 
forjava wrote:
I'm not a turtle shooter but you likely have a mix of diffuse reflection, direct reflection (mirror-like), and polarized reflection (glare). Approaches to try, including a couple for the light-hearted photographer:
--Do polar filtering of the light source or of the light entering the lens or both ("Light, Science and Magic")
--Put a large diffuser or two between the sun and the turtle, near the turtle
--Use bounce light as key, to diffuse the untoward reflection
--Place the key light so the direct reflection’s angles of reflectance do not return to the camera (Fig. 3.7 of “Light…”) – or wait for the turtle and/or sun to move in a way that satisfies a required angles
--Spray on some diffuser (like Angelus Paint Duller) -- unless your testudine is alive
--Use a larger light source
--Shroud the lens with the manufacturer's hood
--Accept some glare from the carapace as useful information for the viewer

Another possibility, but I am unsure, is to use a longer lens.
I'm not a turtle shooter but you likely have a mix... (show quote)


Some ones been reading...good book isn't it?

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Jun 20, 2016 11:02:06   #
cbtsam Loc: Monkton, MD
 
I have a very small diffusion disk. It's about 5 inches diameter closed up, and about 13 inches diameter opened. Held a couple of feet above the subject, it casts a bit of a shadow, significantly reducing glare. Similar disks are available in larger sizes. Widely available at photo stores, B&H, etc. I suspect they'd cut your glare dramatically. And they don't care about the angle of the sun, the way polarizers do. Not so good for turtles running fast, but with an adequate shutter speed and a modest sized lens, you can manage the diffuser and the camera without a tripod.

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Jun 20, 2016 12:00:32   #
sakitson Loc: Goleta, CA
 
With all this great feedback I am just going to have to get myself down to the local park and find a pond turtle to try these things out! Then I should be ready for the next time I come across a new turtle in my travels. Thanks to all. Sally

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