View Full Version : Lens Comparison on 4x5. Symmar, Imagon, Aviar....

Peter De Smidt
2-Apr-2016, 08:23
All photos on 4x5 with Delta 100 in the studio. Light on the background had to change on a few of them, as I had to remove one light from my powerpack to get enough light. I replaced the background light with a speedlight in a small softbox.

300mm Imagon no disk:

Hi-res file: https://www.dropbox.com/s/sicjbuzlsj70w36/Faux_IM_nodisk-0180_8bit.jpg?dl=0

300mm Imagon soft disk holes open:

Hi-res file:https://www.dropbox.com/s/8nhnja0w9tjo0zh/Faux_IM_SD_Open-0181_8bit.jpg?dl=0

300mm Imagon soft disk holes closed:

Hi-res file: https://www.dropbox.com/s/odzufdglhusagkq/Faux_Imagon_Soft_Disk_closed-0182.jpg?dl=0

300mm Imagon middle disk holes open:

Hi-res file: https://www.dropbox.com/s/lxktw9pvxnhjb6a/Faux_Im_97_open-0175_8bit.jpg?dl=0

Peter De Smidt
2-Apr-2016, 08:24
300mm Imagon middle disk holes closed:

Hi-res file: https://www.dropbox.com/s/lf71lj8jlxgboo5/Faux_Imagon_Middle_Disk_closed-0183.jpg?dl=0

300mm Imagon small disk holes open:

Hi-res file:https://www.dropbox.com/s/5peetk8ekgvy8wf/Faux_Im_115_open-0176.jpg?dl=0

300mm Imagon small disk holes closed

Hi-res file:https://www.dropbox.com/s/v4gk236nx3sp0wj/Faux_Im_11_closed-0174_8bit.jpg?dl=0

300mm Symmar-s at f/11 and 2/3rds:


Hi-res file:https://www.dropbox.com/s/vkujb79p32lc4qz/Faux_Sym_f1123-0178_8bit.jpg?dl=0

Peter De Smidt
2-Apr-2016, 08:24
300mm Symmar-s at f/22 and 2/3rds:

Hi-res file:https://www.dropbox.com/s/0wnxzh4qo0iw1r0/Faux_Sym_f2223-0179_8bit.jpg?dl=0

Cooke Aviar (1940-42) at f/16:

Hi-res file: https://www.dropbox.com/s/1qljeacr48djjdu/Faux_Aviar_f16-0177_8bit.jpg?dl=0

2-Apr-2016, 08:56
Good stuff...Love that Imagon.


2-Apr-2016, 08:58
Thanks so much for these, Peter. I found it interesting that the flared highlight in 300mm Imagon small disk holes open is an image of the lens apertures. It makes sense. I've not managed that yet but will be attentive now.


DG 3313
2-Apr-2016, 10:29
Very helpful...thanks for sharing!

Geary Lyons
2-Apr-2016, 10:32
Good work! The test shots are quite enlightening! Thanks for sharing.


2-Apr-2016, 11:36
I really like the no-disk version

2-Apr-2016, 13:42
I agree. This is very helpful - thanks Peter.

My favourite is the soft disk (H5.8 - 7.7 ??) with holes closed.

Peter De Smidt
2-Apr-2016, 16:42
Thank you for the kind comments. I'm glad that someone found them useful. Here's a few more:

This is a 10" Veritar at f/6 and one dot. Delta 100.


Hi-res file:


Here's one at f/6 and 4 dots .(There are 5 dots between f/6 and f/8.):


Hi-res: https://www.dropbox.com/s/q8ykf3dxwykjn03/Faux_Veritar_4-0171.tif?dl=0

Aviar at f/6:

Hi-res: https://www.dropbox.com/s/6owx6pr0udafmdn/Faux_Aviar_5_6-0172_8bit.tif?dl=0

Aviar at f/8:

Hi-res: https://www.dropbox.com/s/v2ye0b289n27hmc/Faux_Aviar_f8-0173_8bit.tif?dl=0

2-Apr-2016, 18:59
My hope is that other folks will give us some examples of softness achieved at the enlarger. Mine was just to get us started. --Jim Galli

No one else posted in Jim's thread. It would be nice to see side-by-side the Symmar negative printed with a soft-focus lens compared to the in-camera soft images.

Peter De Smidt
2-Apr-2016, 21:35
No one else posted in Jim's thread. It would be nice to see side-by-side the Symmar negative printed with a soft-focus lens compared to the in-camera soft images.

I'd be happy to send you the negative.

3-Apr-2016, 05:41
Thank you for these. As a newfound Imagon owner these were beyond helpful!

3-Apr-2016, 07:22
what size Aviar?

Peter De Smidt
3-Apr-2016, 07:55
You welcome! I'm glad they're of use.

14" Aviar, Dr. Tang.

6-Apr-2016, 10:04
I was about to sell my 300mm Imagon but now I'm keeping it. Thank you! now I just need to find a way to mount it on a small board.

6-Apr-2016, 12:01
I was about to sell my 300mm Imagon but now I'm keeping it. Thank you! now I just need to find a way to mount it on a small board.

me too..well..at least I'll give it another go

I never liked that 'all in' look you see with a lot of their pix.. just looks like a smudged up lens to me.. but it looks like it calms down a lot at certain settings..next shoot I'll drag it out I think

Peter De Smidt
9-Apr-2016, 19:27
Here are some more tests. Let's start with a 305mm Graphic-Kowa @ f/9:


Hi-res: https://www.dropbox.com/s/m8pg7p6rlu7go74/Faux_305_Kowa_f9_8bit.jpg?dl=0

Next is an 300mm Imagon with the small disk and the outer holes one half closed:


Hi-res: https://www.dropbox.com/s/dh9xy303vyeozu5/Faux_Imagon_small_disk_onehalf_jpg.jpg?dl=0

Next is the middle disk with the outer holes half open:


Hi-res: https://www.dropbox.com/s/edr7qoknmvjl6ej/Faux_Ima_Middle_Disk_half.jpg?dl=0

Next is the biggest disk with the outer holes half open:


Hi-res: https://www.dropbox.com/s/8nvs2ax57m7qo4a/Faux_Ima_Soft_half_8bit.jpg?dl=0

Peter De Smidt
9-Apr-2016, 19:32
Here's some more with a 300mm Imagon. In this case I made two aperture disks out of black posterboard. I placed them right behind the glass on the Rodenstock 2x filter.

The first one was 47mm:



The second one was 57mm:


Hi-res: https://www.dropbox.com/s/3qrmx01lezlqwts/Faux_Ima_57mm_8bit.jpg?dl=0

Peter De Smidt
18-Apr-2016, 13:28
Today we have a Buhl 216mm, f/3.9 projector lens:


Hi-res: https://www.dropbox.com/s/293fpt5qprfhh2a/Faux_Buhl-0190.jpg?dl=0

Next up is an Ilex 10" (154mm) Paragon at f/16:


Hi res: https://www.dropbox.com/s/4imwjd7x6o22wkn/Faux_Paragon_f16-0191.tif?dl=0

Peter De Smidt
23-Apr-2016, 12:12
Fujinon 420L @ f/16:

Hi-res: https://www.dropbox.com/s/57m54ele4g7nlbu/Faux_420L_f16-0193.jpg?dl=0

Apo-Nikkor 480mm @f/16:

Hi-res: https://www.dropbox.com/s/p9t90w0rmeseokn/Faux_480_f16.jpg?dl=0

Apo-Nikkor 600mm @f/16 (I didn't have room to get the same composition):

Hi-res: https://www.dropbox.com/s/w6wqqqtxm1gnxtb/Faux_600_f16-0192.jpg?dl=0

Voightlaender Collinear 17" @f/16:

Hi-res: https://www.dropbox.com/s/ok2v1pprxz8znmu/Faux_collinear_f16-0195.jpg?dl=0

Peter De Smidt
23-Apr-2016, 12:15
Wollensak 254mm Veritar @f/8:

Hi-res: https://www.dropbox.com/s/bgt3rfs7yi5bdeu/Faux_veritar_f8-0196.jpg?dl=0

Wollensak 254mm Veritar @f/11:

Hi-res: https://www.dropbox.com/s/c82o9r7sk008rj6/Faux_veritar_f11_8bit.jpg?dl=0

Peter De Smidt
26-Aug-2016, 12:52
I'm running out of space on my Dropbox account. As a result, I'm going to take down all of the high resolution files in a day or two.

Randy Moe
26-Aug-2016, 13:09
I know you must delete, but it is such a shame that we must delete such valuable examples

Even in this new Era of seeming unlimited data storage we lose our Large Format Photographic evidence and history faster every day.

Some think everything has been written, everything is known, everything is easily 'Googled'.

It is not and humans always forget.

26-Aug-2016, 13:35
Peter are you and Randy Moe dating the same model?

Peter De Smidt
26-Aug-2016, 13:41
Cousins. No dating. The files will be available if someone contacts me.