When reviewing an image, initially there is no color and no brightness. Canon 80D.

Thumbnail, your points are well taken. I tend to believe that since both lenses are stored in the same room, temperature controlled because
I truly detest having to contend with haze, fungus and whatever else finds its way into gear. My question still stands and no matter how much moisture, condensation is accumulated, (but enough to create the problem you so aptly described, wouldn't that cause the image to
turn out soft and flat? Thanks again, I sincerely appreciate your efforts to help resolve this head scratcher of a problem. )

Cheers Mate,

Tony

 

In answer to your question Tony; if a lens element, or combination of elements, steam up entirely then yes, the whole image would be soft and flat but I don't think this is happening. For example, when my specs steam up, for whatever reason, it starts at the edges near the frame and creeps inwards, a similar thing happens with my kitchen windows if I forget to turn the extractor fan on. I don't know what causes this but I'm sure physics will have an answer.
I believe we have exhausted these theories for now Tony but hopefully some further investigations on your part will shed shed further (unobstructed) light on the problem.

Go0d luck.

 

I repeat THIS IS NOT CAUSED BY THE LENS.
After taking the image it is in the cameras internal memory and the lens has finished its part in the process, if the image changes as you are viewing it on the LCD after the shutter has been actuated then it is a fault in the camera body.

 

I am having to lean into a similar view as Ray here. The images he posted that showed faint on both cameras look fine above so if it is not the file it is not the lens. This has to be a "viewing problem". However I find it hard to believe two cameras are intermittently showing faint images, and.....newer cameras should display pretty well the information.

Johnsey, if what you are theorizing is true, then why were there no problems (viewing or otherwise) when I went to a different, albeit, Canon lens? The Canon EF-S 18~135mm, IS, STM Lens may not be a professional grade lens, however there are many professionals who do use it because it is one of the best as far as IS, STM is concerned. It is heavier with a much better quality build than the Canon EF-S 55~250mm, IS, STM lens. Thanks again, Tony.

 

Johnsey, I clearly indicated from the beginning that the images I was about to upload, were all JPEG. I also indicated that there was no
Post Editing work, only Straight Out of Camera. Alright, getting back to the main issue. As you stated now there are multiple lenses
and more than one Canon body. The two identical twin 55~250mm, IS, STM lenses ( I believe cause the problem) and here is why.
I used both the 18~135mm, IS, STM lens and the 18~55mm, IS, STM lens taking approximately 200 captures each with a total of 400
snaps, and did not experience any problems. NONE! I should mention that these 400 snaps were all taken with nearly identical conditions, being; High temperatures with very harsh sunlight and, in addition, the very same flowers and houses, trees, etc., etc..

When viewing what I myself was experiencing, I had to ask: "Well Tony, how much more proof do you need?" As far as viewing goes,
I stood there, screen in front of my eyes (no angle) just directly in front and saw what transpired on both cameras. In addition, in defense
of myself, I am not a Mechanical Engineer, Electrical Engineer, Optical Engineer or Software Engineer. I am not as well grounded as you
very talented and gifted individuals, so all I can do is report to you in Layman's terms exactly what I am experiencing through direct, hands on work. Also, keep in mind that everything I shared here, I also shared with Canon's Tech Support and even they had no idea
what was going on. All they could advise me to do was to reset the bodies to Factory Settings and see what happens.
My way of thinking is if there was anything misfiring or malfunctioning within the bodies, it certainly would have manifested itself within
400 hundred shutter actuations. Again, a great many thanks for all of the comprehensive, informative ideas, suggestions and helpful hints.

All the best and stay safe,

Tony

 

Greetings. My how time flies. Been nearly a year since the last post in this thread. I did discover something that may be of interest to all
of us. There are times when I like to shop around for older (bang around gear) like a grocery store car and study reviews. I was poking
around some old Nikon DSLRs, and stumbled upon a Nikon D3000. (A real beater) Interestingly enough the information offered really
floored me and it stated the unit contained what is referred to as: ADR= Adaptive Dynamic Range. Okay, fasten your seat belts friends,
here it comes, which will cause a two to three second delay in the image fully appearing on the back screen. Canon I believe has EDR,
Extended or Expanded Adaptive Range which I suspect may be causing this issue with my gear. Again, the key word here is "suspect."
So please do not shoot me, I am only the messenger. I had a Canon EOS Rebel t5 and never had any type of problem with it. "Only issue
I had with it was a very clunky sounding shutter, but otherwise a real fine release from Canon. I do hope this is some way helps as I have
no intention of confusing the issue. Also, because of mobility issues since the first of this year, I have not had a good opportunity to get out
and do some good work. Hopefully this will change within the next week or sooner. I am experiencing withdrawal symptoms. (

Thanks again,

Tony )

 

I think it was a Lag while Image Processing: There can be a slight delay in processing the image before it is fully displayed with all its colors and brightness. Sometimes, a slow or faulty memory card can cause delays in processing the image and displaying it. Keep your camera updated to avoid such issues.

 

Thank you very much. I will certainly do as you suggest. Much appreciated!

Tony )