Bryan Peterson vs. Diffraction
Dec 13, 2023 13:48:45 #
Harry02 wrote:
Nope.
For some lenses and shots, the vignetting was a plus. focusing the focus to the center.
I used to shoot some old Russian stuff- and the softness at the edges were they're own vietting.
What I'm thinking the diffraction was the fringing, purple on one side and green on the other.
At certain sun angles, and at small apertures.
Are the fringing and diffraction different?
I've been calling them the same (cause and effect ) for over a half century!
For some lenses and shots, the vignetting was a plus. focusing the focus to the center.
I used to shoot some old Russian stuff- and the softness at the edges were they're own vietting.
What I'm thinking the diffraction was the fringing, purple on one side and green on the other.
At certain sun angles, and at small apertures.
Are the fringing and diffraction different?
I've been calling them the same (cause and effect ) for over a half century!
The “fringing” is chromatic aberration, which is different from diffraction.
https://www.adobe.com/creativecloud/photography/discover/chromatic-aberration.html
I’ve seen it a lot on old single coated lenses. You can correct it in post for many lenses. Years ago, when selling off my Canon FD lenses, I sold an FD mount 200mm f2.8 SSC lens to a gentleman using it with an adapter on a digital camera. He took a look with his camera and thought it looked fine and bought it. I looked at a distant edge and thought the fringing was unacceptable.
Dec 13, 2023 13:52:10 #
Harry02
Loc: Gardena, CA
burkphoto wrote:
Yep. Cutting the center out of the projected image cone makes a more consistently less sharp image, edge to edge. You miss the aberrations in the corners, but magnify all other flaws by the crop factor. Depending on cropping and degree of print enlargement, this may or may not be a problem.
Full frame film lenses on Micro 4/3 were a problem for me. They were soft.
Full frame film lenses on Micro 4/3 were a problem for me. They were soft.
I've kept quite a few of me old Nikon silver lenses, just cause they're cute.
And I still had them- pretty good for FX lenses on my 24mp DX cameras.
No enlargements, minimal cropping. Manual focus.
The largest I've printed were 8x10s. Been a while for those. 4x6s are usually on sale!
And as FX lenses they work well on my D600.
YMMV
Dec 13, 2023 14:07:10 #
Harry02
Loc: Gardena, CA
TriX wrote:
The “fringing” is chromatic aberration, which is d... (show quote)
ah. I be corrected.
https://www.dpreview.com/forums/thread/1648620
Thanks.
Dec 13, 2023 14:09:58 #
CHG_CANON wrote:
Photographer 1 - I buy the best lenses and never use a filter because I can't tolerate a possible 0.3% impact on the sharpness of my images.....
Photographer 2 should have said "Keep your expectations realistic, and where finding the ultimate optimisation is concerned, hold to the idea that everything is up for compromise (including sharpness).
Dec 13, 2023 14:17:31 #
R.G. wrote:
Photographer 2 should have said "Keep your expectations realistic, and where finding the ultimate optimisation is concerned, hold to the idea that everything is up for compromise (including sharpness).
You are what your images say you are ...
Dec 13, 2023 14:20:16 #
CHG_CANON wrote:
You are what your images say you are ...
I would like mine to say "Well-rounded and balanced, even in the face of compromise".
Dec 13, 2023 14:28:44 #
R.G. wrote:
I would like mine to say "Well-rounded and balanced, even in the face of compromise".
I'd rather have a record that says I played every game like a champion.
Dec 13, 2023 14:34:29 #
CHG_CANON wrote:
I'd rather have a record that says I played every game like a champion.
There's a difference?
Dec 13, 2023 20:23:16 #
srt101fan wrote:
"Degrade" reality??? 
Blur, soften, alter with neural filters, etc.
Dec 13, 2023 21:12:21 #
Harry02
Loc: Gardena, CA
CHG_CANON wrote:
You are what your images say you are ...
I take mostly family pics these last few decades.
I print the good ones and I leave memories.
Showing wedding and reception shots- to their kids!?!
Girls in their 20s always get excited at embarrassing photos of their 10s.
Just had one that was a Billy Idol fan- complete with the haircut. Thought we'd forget?
Dec 13, 2023 22:40:18 #
flyboy61
Loc: The Great American Desert
rehess wrote:
I'm using film-era lenses on a film camera, I believe digital users over-rank 'sharpness'.
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