Talk:Chromatic aberration

message: Do mirrors show CA?  —Preceding unsigned comment added by 130.194.13.105 (talk) 03:57, 8 November 2007 (UTC)
replies: text: I agree. I'm surprised this article never mentions mirrors, so I added a short sentence. --DavidCary (talk) 17:56, 10 December 2021 (UTC)
thread_title:  Mirrors 

message: I noticed a large part of the article is dedicated to effects of CA in photography, this is great as CA affects photography but the article (in my opinion) must show the causes of chromatic aberration before discussing its effects, so I'm gonna move the two paragraphs dedicated to photography and even digital cameras in the intro to a new sub-title called "Chromatic Aberration in Photography", the paragraphs may look out of context so anyone with deep knowledge on photography and chromatic aberration effects, please edit it, try to include technical data on how digital cameras correct some of this problems, should be interesting.  —Preceding unsigned comment added by 189.163.205.77 (talk) 05:05, 4 March 2008 (UTC)
thread_title:  Chromatic Aberration in Photography 

message: The references to Nikon's and Panasonic's in-camera correction capabilities are correct, to my knowledge, but they seem more appropriate in a buyer's guide than in a discussion of CA. The comments made me wonder if they were included as brand name promotion rather than as impartial information. Perhaps the brand name references should be removed. I'm new here, so I'm not jumping in and making edits myself at this point. I just wanted to bring it up for consideration.  —Preceding unsigned comment added by Dave21742 (talk • contribs) 16:48, 17 March 2010 (UTC)
thread_title:  References to Nikon and Panasonic 

message: I think this article requires disambiguations for color fringing AKA "color aberration" in CMYK offset printing due to misaligned 4-color templates, and color fringing AKA "color shifting" or "color drooping", a similar-looking issue in composite video due to poor-quality copies of the video signal's chroma subsampling (I'm aware neither of the two issues have own articles yet). --79.193.44.240 (talk) 21:45, 25 May 2010 (UTC)
thread_title:  Disambiguation needed 

message: The examples given make no reference to the type of aberration, hence are of limited value. We need a comprehensive set of illustrations of the two types and their superposition.
smartcat (talk) 04:00, 19 July 2010 (UTC)
thread_title:  better examples needed 

message: The examples show lateral chromatic aberration but all of the ray diagrams show axial chromatic aberration. I've never seen an example of an image suffering from axial; we should have one if it can be detected. We should also have a ray diagram showing how lateral chromatic comes about. —Ben FrantzDale (talk) 13:36, 14 April 2011 (UTC)
thread_title:  Examples: Axial vs. Lateral 

message: The opening paragraph contends that chromatic aberration "occurs because lenses have a different refractive index for different wavelengths of light." would it be more accurate to say "different frequencies of light," because the frequency of the light does not change as it passes through the medium? GreenMachine86 (talk) 17:55, 20 August 2011 (UTC)
replies: text: I suppose to be pedantic, yes, that's probably better. It's enough less common that it might want a parenthetical "(different wavelengths in a vacuum)" or something. —Ben FrantzDale (talk) 12:52, 22 August 2011 (UTC)
thread_title:  "different wavelengths of light" 

message: Maybe this is off-topic, but I think it is worth mentioning. A website (kinotehnik.com) selling lcd viewfinders is using the photographs used to illustrate this article - and is actually claiming that the photograph without chromatic aberration was taken using their product, and the one with chromatic aberration was taken using a rival product! The original image description on Wikipedia Commons states that the image without chromatic aberration was taken using a Sony V3 camera, and the one with chromatic aberration was taken using the same camera but with a wide angle lens attachment. Meowy 13:10, 16 June 2012 (UTC)
thread_title: Content is being used in a bogus website advert

message: In Medibang Paint there's a filter option that applies chromatic aberration to the selected layer, and I've found that it results in the same visual effect as when you look at the screen through a diffraction grating. I know this only applies to the RGB colorspace, which is how color is displayed on the screen itself, but could this theoretically be useful for visualizing spectra?
  — Preceding unsigned comment added by Gridzbispudvetch (talk • contribs) 02:57, 2 October 2019 (UTC)
replies: text: You could use actual chromatic aberration to make spectra apparent. Computer simulated chromatic aberration is not going to be helpful, because you're limited to the data you have. An RGB image does not capture the full spectrum. --Srleffler (talk) 19:17, 6 October 2019 (UTC)
thread_title:  possibility of chromatic aberration being useful?