01-18-2021 10:48 AM
That's because the answer was very clear by @Waddizzle: "Camera’s are designed to create image files, not so much to edit them."
But, there is no need to build such feature it into a camera. Custom picutre style can do a trick. But only after removing limitation from Picture Style editor.
01-18-2021 10:51 AM - edited 01-18-2021 10:52 AM
"I would like to make quick preview with my Canon 80D."
The problem here is you people are trying to use the wrong equipment to do a very simple operation. Get a scanner. Some do 10 or 12 negs or slides at a time. Usually less slide as they are bigger. You can pick and choose which photo(s) you want.
01-18-2021 11:56 AM - edited 01-18-2021 12:16 PM
Why using a scanner? It is not free. I have a photo magnifier from a 35mm film era, I had a photo lab for B&W photography at that time. Scanner is not free, and form me a photo magnifier is free.
To use a photo magnifier for scanning negatives, it is necessary to remove an objective, so a camera is focusing on a backlighted film. Behind a film is a condensing lense for even light distribution. It works great, and is kinda having digital photo lab. After remote-photographing a negative from EOS Utility, I convert it to negative and adjust RGB levels to get real colours (for colour negative). It's so much like working in a photo lab, only without chemistry. Great feeling.
Why do I like to have a "Negative" custom style in Picture Style Editor? Because, at 35mm era, it was usual to make contact copies and develop them to check photos before magnification. For this part of a process I would like to use my digital EOS.
The only thing that makes it impossible is a limitation in Picture Style Editor to invert a Tone curve. One simple SW upgrade will fix it, and ALL Canon digital DSLRs would be able to produce positive view of 35mm negatives.
Wouldn't it be a great feature? Advantage for Canon?
01-18-2021 12:53 PM
"Wouldn't it be a great feature? Advantage for Canon?"
Not to rain on your parade but in my 60 years of photogrpahy I have never wanted or seen a need for it. In those same decades I have never had anyone express a desire for that feature. I suspect Canon takes that in to account to what features they put in cameras.
I still think you are trying to use the wrong gear for the task at hand. Do you happen to have a printer? Most now days have a scanner built in. That is not the best way (best scanner I mean) but if you already have a printer it if is free to use also. Another point is I think you will get quicker results than asking and/or waiting for Canon to make it a feature in their cameras.