jaapv Posted January 13, 2016 Share #21 Posted January 13, 2016 Advertisement (gone after registration) I too use color profiles. Using a custom color profile with the M8 in combination with ir filters I can get consistently get good color. The M240 and 262 do not recommend if filters and will not correct for the cyan corners they may induce. Both the M8 and M9 had cyan corner correction in their software as sn option with ir filter use I use IR filters consistently on my M9 and M240 (down to and including 35 mm) and find that the colour improves by their use. Link to post Share on other sites More sharing options...
Advertisement Posted January 13, 2016 Posted January 13, 2016 Hi jaapv, Take a look here M262 Color Pallette. I'm sure you'll find what you were looking for!
gpwhite Posted January 13, 2016 Share #22 Posted January 13, 2016 This mishmash has nothing to do with what I posted. Copy and paste from wiki? Rick Actually, Rick, that is what I surmised you had done. So, I was trying to move beyond your wiki and help explain how we interpret colors in a manner that make sense in our experience. Since you asked, I teach this stuff to graduate neuroscience students. Link to post Share on other sites More sharing options...
Rick Posted January 13, 2016 Share #23 Posted January 13, 2016 I have a doctorate in the area. We should get together someday. Rick Link to post Share on other sites More sharing options...
thighslapper Posted January 13, 2016 Share #24 Posted January 13, 2016 yup ..... and have a nice chat about bags ..... Link to post Share on other sites More sharing options...
Bill Livingston Posted January 13, 2016 Share #25 Posted January 13, 2016 yup ..... and have a nice chat about bags ..... Oh... can I come? Link to post Share on other sites More sharing options...
Rick Posted January 13, 2016 Share #26 Posted January 13, 2016 The only bags I have are under my rods and cones. Link to post Share on other sites More sharing options...
lm_user Posted January 14, 2016 Author Share #27 Posted January 14, 2016 Advertisement (gone after registration) I use IR filters consistently on my M9 and M240 (down to and including 35 mm) and find that the colour improves by their use. That makes a lot of sense to me. Kind of makes you wonder why Leica did not provide a software fix/option for cyan corner correction with uv/ir filter use. Important option with wide angle lenses IMHO Link to post Share on other sites More sharing options...
gpwhite Posted January 14, 2016 Share #28 Posted January 14, 2016 I have a doctorate in the area. We should get together someday. Rick me too! Let's do. My area is long-term memory, but I teach S & P to intro cog neuro classes at our university. Peter Link to post Share on other sites More sharing options...
jaapv Posted January 14, 2016 Share #29 Posted January 14, 2016 That makes a lot of sense to me. Kind of makes you wonder why Leica did not provide a software fix/option for cyan corner correction with uv/ir filter use. Important option with wide angle lenses IMHO There is always Flat Field Correction in postprocessing. Link to post Share on other sites More sharing options...
Printmaker Posted January 20, 2016 Share #30 Posted January 20, 2016 Your brain is not the only process that is involved in color perception. Your eye's photoreceptor distribution have much to do with how you perceive color... not to mention that processing is being done in ganglion cells, bipolar cells, horizontal cells and amicrine cells in the retina before being sent to higher processing areas of the brain. The retina is a neuro-processing network and is the first order of processing in color perception. Rick Having had cataract surgery a few years back, I was amazed to see my own color perception change. Of course I adjusted to the new color palate within a day or two. Link to post Share on other sites More sharing options...
jaapv Posted January 20, 2016 Share #31 Posted January 20, 2016 I didn't My left eye is new (lens and Cornea), my right eye 70 years old. The colour balance is at least 500 K different. Link to post Share on other sites More sharing options...
gpwhite Posted January 20, 2016 Share #32 Posted January 20, 2016 I didn't My left eye is new (lens and Cornea), my right eye 70 years old. The colour balance is at least 500 K different. Jaap, those 70-year old cells in your primary visual cortex will eventually process the difference out, if you give them enough practice . I can tell from reading your thoughtful posts that your brain remains plastic (a good thing in neuroscience!). Link to post Share on other sites More sharing options...
jdlaing Posted January 20, 2016 Share #33 Posted January 20, 2016 I didn't My left eye is new (lens and Cornea), my right eye 70 years old. The colour balance is at least 500 K different. Actually the same old camera with a new lens and aperture. Link to post Share on other sites More sharing options...
jaapv Posted January 20, 2016 Share #34 Posted January 20, 2016 gpwhite, on 20 Jan 2016 - 16:03, said:gpwhite, on 20 Jan 2016 - 16:03, said: Jaap, those 70-year old cells in your primary visual cortex will eventually process the difference out, if you give them enough practice . I can tell from reading your thoughtful posts that your brain remains plastic (a good thing in neuroscience!). I don't think it will even out, as I have found a good use. Using my eyes alternately and then together helps a lot in finding the perfect colour balance. Link to post Share on other sites More sharing options...
sblitz Posted January 20, 2016 Share #35 Posted January 20, 2016 perhaps a good reason to shoot black and white Link to post Share on other sites More sharing options...
jaapv Posted January 20, 2016 Share #36 Posted January 20, 2016 Too, when my MM1 is due for an outing Link to post Share on other sites More sharing options...
lm_user Posted February 14, 2017 Author Share #37 Posted February 14, 2017 It has been a while for this thread Any chance a M262 owner could compare ir contamination with and without the uv/ir filter. Maybe a photo of a synthetic black fabric under tungsten light Thanks Link to post Share on other sites More sharing options...
bencoyote Posted February 24, 2017 Share #38 Posted February 24, 2017 I didn't My left eye is new (lens and Cornea), my right eye 70 years old. The colour balance is at least 500 K different. I had something like that skiing a couple of days ago and was shocked it could happen. My ski goggles have a lens in them that is supposed to enhance contrast and gives everything a red cast when you first put them on. The perceptual effect changes back to normal after a few minutes. When you first take them off everything switches to Blue for a while. I was on the ski lift and I saw a weird shimmery effect on the mountain and by winking my eyes I discovered that it was caused by one of my applying the white balance correction and the other not. I played with the experience for minute or so not quite believing that my brain could do something like that. I would have thought that the perceptual filtration shifting the colors would have happened after the images were combined. Link to post Share on other sites More sharing options...
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