View previous topic :: View next topic |
Author |
Message |
renes
Joined: 13 Feb 2009 Posts: 42 Location: Warsaw
|
Posted: Thu Feb 19, 2009 11:03 pm Post subject: |
|
|
Dan,
Thank's for explanation and Schneider pdf link with all data. So, Schneider Symar 80/5.6 covers 2x3 (111mm) with f/16 and becames an alternative to Kodak WF EKtar 80/6.3 although is also very hard to find. But now there are two which from I can make a choice and probably I will do it because all 75mm LF lenses (I prefer this lenght to 80mm) have too large rear diameter (over 51mm, besides f/8) and will not find enough room in Century bellows.
sevo,
Here there are a few Sekor 50/6.3 pictures. A friend of my told me looking at the photos that it will not possible with it to remove the shutter/lens assembly from the helical and mount the lens on graflex board. I am confused although looking at the photos a think it should be able...
[/img] |
|
Back to top |
|
|
renes
Joined: 13 Feb 2009 Posts: 42 Location: Warsaw
|
Posted: Sat Feb 21, 2009 9:08 pm Post subject: |
|
|
I found very interesting lens made for Graflex 22 TLR 6x6, there were two
versions:
Graflex Optar 83mm F3.2 (Graphex shutter)
and
Wollensak 83mm f3.2 Raptar (Rapax shutter)
I meet with opinion that the lens covers 6x8. I wonder if is it sharp in corners when stoped to f/22... maybe someone has this lens and uses it on 2x3? |
|
Back to top |
|
|
Henry
Joined: 09 May 2001 Posts: 1636 Location: Allentown, Pennsylvania
|
Posted: Sun Feb 22, 2009 12:43 am Post subject: |
|
|
83mm Optar! That's a new one on me. I know there were 65 (I have one) and 90mm. What do you know about this, Dan Fromm? |
|
Back to top |
|
|
renes
Joined: 13 Feb 2009 Posts: 42 Location: Warsaw
|
|
Back to top |
|
|
Dan Fromm
Joined: 14 May 2001 Posts: 2120 Location: New Jersey
|
Posted: Sun Feb 22, 2009 1:09 pm Post subject: |
|
|
Henry wrote: | 83mm Optar! That's a new one on me. I know there were 65 (I have one) and 90mm. What do you know about this, Dan Fromm? | Nothing at all. But then I've never paid attention to Ciroflexes. If there are Graflex 22s with Raptar lenses, Graflex must have used lenses Ciro had on hand when bought without getting new trim rings for them.
FWIW, 83 mm is a bit long for nominal 6x6, brings to mind my Ansco Automatic Reflex which also has an 83/3.2 taking lens. That lens is a triplet; I haven't looked in the FAQs here, but I betcha the 83 Raptar is a triplet too.
Ansco is supposed to have used an 83 instead of an 80 to get better image quality in the corners. An 80 mm triplet that fast doesn't cover 80 mm (the diagonal of 2.25" x 2.25") very well.
Our friend Piotr seems to be hung up on finding buried treasure. I wish him luck, but there really isn't much around these days.
"Fast" normal lenses for cameras that shoot nominal 6x6 just won't cover nominal 6x9. It doesn't help that he thinks that nominal 6x9 isn't 2.25" x 3.25".
Thinking of buried treasure, a while ago I bought a very inexpensive 84/6.3 Krauss Tessar, probably from a Gaumont stereo camera, from a seller on eBay.fr. I finally tried it out on my Speed. Seems to cover nominal 2x3 at f/16.
Cheers,
Dan |
|
Back to top |
|
|
renes
Joined: 13 Feb 2009 Posts: 42 Location: Warsaw
|
Posted: Sun Feb 22, 2009 3:30 pm Post subject: |
|
|
Dan,
I do not remember now (supossely it was on photo.net) but someone who owned this 83mm f/3.2 (think it was Wollensak) lens expressed that this lens covers 6x8 (rollfillm back) but the 85mm f/3.5 wersion does not. He checked it.
The seller on polish auction who offered it (see photos) also expressed that the lens covers 6x9. The auction finished a few month ago but yestarday I sent an e-mail to him asking for this coverage.
|
|
Back to top |
|
|
Dan Fromm
Joined: 14 May 2001 Posts: 2120 Location: New Jersey
|
Posted: Sun Feb 22, 2009 6:00 pm Post subject: |
|
|
Per http://rick_oleson.tripod.com/index-76.html, the lens is a tessar type.
I'm sorry, nominal 6x8 isn't nominal 6x9, and an 83/3.5 tessar won't cover 6x9. Tessars that fast do well to cover 1.1 * focal length. Remember that one photographer's "covers" is another's "unacceptably fuzzy in the corners." |
|
Back to top |
|
|
renes
Joined: 13 Feb 2009 Posts: 42 Location: Warsaw
|
Posted: Mon Feb 23, 2009 9:19 am Post subject: |
|
|
That's why I asked about sharpnest in corners.
In the meantime it turned out that short tele lenses (160mm-180mm) from my list only these 3 could fit into front standard of Century bellows:
Schneider Symmar 180/5.6 (rear is 45mm)
Wollensak 160mm f/5.6 Pro Optar (47mm?)
Graflex Optar 162mm f/4.5 (47mm)
Wollensak 160mm takes prise for sharpness, Graflex 162mm probably is not bad but I can buy 160mm Symmar for 250$... unfortunately could not find info about its quality... is it worth this price?
There was also mentioned here Schneider Symmar 80/5.6 made for (6x7) but which covers - according to Schneider vintage data - 6x9.
It is strage but it looks like this lens exists only on a Schneider paper - could find nothing about it elswhere. |
|
Back to top |
|
|
renes
Joined: 13 Feb 2009 Posts: 42 Location: Warsaw
|
Posted: Tue Mar 17, 2009 12:24 am Post subject: |
|
|
Hello,
I hope you will give me an advice ... I was offered to buy two Super Angulon lenses: 47/8 and 75/8, they should fit to Century' standard but I am affraid about correct focusing with F/8 lens stop. Is it hard to focus with such aperture ? (I have original Graflex gg with fresnel). I will use lenses for landsape .
And are these lenses very good quality?
I was considering to buy Super Angulon 47/5.6 (non XL) and Tokyo Kogaku 75/5.6 (made for Horseman) but they are rather hard to find.
Have found opinion that SA 47/8 covers only 6x6 even with f/22 ??? |
|
Back to top |
|
|
Dave
Joined: 05 Dec 2003 Posts: 78 Location: Canada
|
Posted: Wed Mar 18, 2009 3:25 pm Post subject: |
|
|
A 47/8 SA will amply cover a 6 x 9 negative at f/22. Check 'Vintage Lens Data' on the JSK website.
Whether you can focus an f/8 lens on the ground glass depends on a lot of things-- the ambient light, how good your eyes are, and how good your darkcloth is. I bet you'll have no trouble, particularly with a 47mm lens on distant subjects. If you want to try it out, just get any one of your current lenses and focus it with the iris set at f/8. |
|
Back to top |
|
|
|