pontiac1940
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Posts: 6,356
Open to constructive criticism of photos: Yes
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Post by pontiac1940 on Feb 23, 2023 2:58:17 GMT
I sent the following message to a small group of local photographers. Hey all. Just a senior citizen "heads up" comment. I had cataract surgery 2 and 4 years ago and my distant eyesight is pretty good for an old guy. (I hang with young people for their brilliant eyesight and they hang with me in case we get chased by a bear.😆😆😆) Needless to say, I have a dozen pairs of reading glasses strewn about the house...computer glasses, late-night tablet glasses and I wear those dorky half-glasses for driving and reading my cell phone. (I actually do not need lenses for actual driving.)
Recently, I purchased three pairs of 1.5 diopter glasses for my large computer screen. Perhaps not a good choice. They are intended for viewing computer screens and have a yellow filter to "block blue light" which apparently is beneficial for eye strain and sleeping after reading a tablet or cell phone late at night. However, not so swell for eyeballing white balance when using Photoshop or Lightroom. Just thought you might like to know. See the poor photo. I held one eyeglass lens over part of the cellphone lens. There is quite a difference in color. I'll have to pay attention when editing. Stay warm.
PS: Yes, I check WB in ACR and also use "Remove color cast" (PSE) as needed, but one still needs to see the image properly.
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VickiD
Established Forum Member
Posts: 718
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Post by VickiD on Feb 23, 2023 3:50:26 GMT
I never thought of this, Clive! I'll have to pay attention to which pair I grab in the future!!!
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pontiac1940
CE Members
Posts: 6,356
Open to constructive criticism of photos: Yes
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Post by pontiac1940 on Feb 23, 2023 6:01:59 GMT
This gives a better idea ...
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Post by michelb on Feb 23, 2023 20:02:32 GMT
Another blue filter story ? I had a recent discussion with my ophtalmologist about the state of my growing cataract. Well, the surgery could be needed before the end of the current year. I complained about my recent experience when playing at Rummikub with my family. Our Rummikub sample offers the traditional four colours for the tiles: Black, Blue, Red and Orange. Bad luck, in most artificial lighting, I can't easily tell blue from black, especially under dim lighting. "No wonder", she said, "your cataract acts as a yellow filter". So, I totally agree with Clive, our problem as photographers is to correctly assess the white balance, knowing that after the surgery, we'll be back to our original, non blue filtered vision. In practice, I even resorted to use: - a much brighter room lighting, since the filtering is less important - different room light sources: LED sources have a fuller spectrum as fluorescent light, but they are sold mainly in 'warm' versions, 2700; 4000 Kelvin rather than 6500 K daylight. - small pocket LED lamps to check the real tones of the tiles (with their bright light, I think that the color perception of the cones in the retina works much better)
Now, until I get the cataract surgery, I don't trust my personal white balance perception. What I can do is: - to check my printed results in real daylight or similar artificial sources - to calibrate my display more frequently with my Spyder - to strongly ignore any gadget to filter blue. My cataract is protecting me !
Last word: Last sunday, my daughter invited us for a game of Rummikug. Surprise! She had just bought the latest flavour of the game: with bright CYAN tiles instead of blue ones.
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VickiD
Established Forum Member
Posts: 718
Open to constructive criticism of photos: Yes
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Post by VickiD on Feb 23, 2023 22:52:01 GMT
Last word: Last sunday, my daughter invited us for a game of Rummikug. Surprise! She had just bought the latest flavour of the game: with bright CYAN tiles instead of blue ones. michelb, what a thoughtful daughter!
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