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What lens has "glowy" effect?
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PostPosted: Fri Jan 15, 2016 3:56 pm    Post subject: Reply with quote
Glowy


This is a Polaroid from my 1929 Glunz of Hanover plate camera with Meyer Goerlitz 135 lens. I don't remember the settings and it is difficult to read the EXIF info off the Polaroid film. I have not tried this lens on digital.
Pete


PostPosted: Fri Jan 15, 2016 6:13 pm    Post subject: Reply with quote
TAo2 wrote:
Glow or glowy lens = spherical aberration. Best examples are older Leica lenses, but sssh don't tell Leica owners that. They think the prices they paid are for higher quality and exclusivity.... Laugh 1


hm..I am still confused about the exact causes for the glow of my M-Rokkor.
a severe case taken with the strong tropical sun

#1


this lens has gone through repairs which was cutting open the front lens' housing and polishing it's rear. I had presented that in another thread: http://forum.mflenses.com/minolta-m-rokkor-28-2-8-spotting-corrosion-advice-needed-t62674.html
I try to find out the exact cause of the glow as it would tell me if, and if so how I could try to further improve the lens

Does it glow that much because of spherical aberration? If so is the spherical aberation most likely caused by either it's front lens not being exactly positioned as originally or even because of slight change of curvature from polishing? Look at these 100% crops:

#2


and of the earlier shown sample:
#3


Could the lens, at the same time, be 'that' sharp? Or do I see wrong and it isn't sharp and, for spherical aberration, 'typically' unsharp?
If it is 'too sharp' for spherical aberration, would it glow only because of coating having been removed by polishing?
( the album with all photos taken with this lens, view of full resolution possible: https://www.flickr.com/photos/kuuan/albums/72157644175227413 )


PostPosted: Fri Jan 15, 2016 8:38 pm    Post subject: Reply with quote
Canon 50 1.2 LTM (wide open)


PostPosted: Sat Jan 16, 2016 5:01 am    Post subject: Reply with quote
The Olympus 55/1.2 has a glowy dreamy effect when wide open

...and of course the Canon 50/0.95 "dream lens" has all sorts of glow wide open

Echinacea Bee 2 by Michael Lee, on Flickr

Echinacea 3 by Michael Lee, on Flickr


PostPosted: Sat Jan 16, 2016 6:40 am    Post subject: Reply with quote
Pete wrote:
Glowy


Very nice Firebird Trans Am Like Dog


PostPosted: Sat Jan 16, 2016 7:58 pm    Post subject: Reply with quote
edited

Last edited by bernhardas on Sat Apr 09, 2016 5:55 am; edited 1 time in total


PostPosted: Sat Jan 16, 2016 9:48 pm    Post subject: Reply with quote
Simple:
1. buy a lens with a cheap skylight filter left on it (most of us used these back in the day)
2. forget to take it off
3. wonder whether you have a faulty lens
4. decide you will keep it as a portrait lens because of the glowy effect


PostPosted: Sat Jan 16, 2016 9:52 pm    Post subject: Reply with quote
Or you can stack up a few filters...
http://petapixel.com/2011/06/16/experimenting-with-stacks-of-uv-filters/


PostPosted: Sat Jan 16, 2016 11:14 pm    Post subject: Reply with quote
Humulus wrote:
Pete wrote:
Glowy


Very nice Firebird Trans Am Like Dog


Thanks, That man's sun just got done restoring it and was getting ready to give to the customer. This was the first pic from my Glunz camera that I converted to use Polaroid pack film.
Pete


PostPosted: Sun Jan 17, 2016 2:38 am    Post subject: Reply with quote
The "glowy" effect can be achieved with many lenses, cheap or expensive. The key is having a sense of timing, proper exposure, position and a mastery of light control. It's that simple Smile


PostPosted: Sun Jan 17, 2016 2:48 am    Post subject: Reply with quote
frenched wrote:
The "glowy" effect can be achieved with many lenses, cheap or expensive. The key is having a sense of timing, proper exposure, position and a mastery of light control. It's that simple Smile

Indeed.
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