Thomas902 wrote:
Food for thought...
Cataract Symptom: (Color Changes) Your vision may gradually take on a brownish or yellowish tinge. At first, you may not notice this discoloration. But over time, it may make it harder to distinguish blues and purples.
Best advice? Always shoot a color target with each and every setup for commercial work... No worries then...
Disclaimer:
While "Cataracts" can (and typically do) cause changes in color perception as they progress. However the variability may be due to pupil size, lighting or dry eyes. Most likely these symptoms are due to progression of your cataracts. However, please consult with your ophthalmologist to confirm this because retina and optic nerve problems in the back of the eye can also cause these changes. (issues with your retina and/or optic nerve are serious and require timely medical intervention)
As for Pupil Size? If you've been in this craft long enough you likely realize that a "fast" prime or zoom will typically experience maximum Chromatic deviations at their maximum aperture... Don't believe this? Then I suggest you invest quality time on DxOmark (enough said)
Below is an image of a very "Fast" aperture a.k.a. Pupil Size ideal for low illumination levels in which optical and color distortions abound... However your eyes relay their input through an amazing data analytical component (your brain) which alters your "perception" of what your "eyes" actually capture at astonishing speed in real-time corrected to what your mind has been programmed to accept as "real"... Which is why your perceived color balance isn't highly accurate... Shoot color targets, to get color balance right.
Most importantly Please Protect your cherished sight by having your eyes examined by licensed medical practitioners at the recommended intervals for your age group.
Wishing all a marvelous journey in photography and stellar health. Cheers! Thomas
Food for thought... br i Cataract Symptom: (Color... (
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