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herbet
23-Dec-2011, 11:05
does anyone know if the copal #0 shutter that comes with the rodenstock apo-sironar-s 135 has 5 or 7 blades? I bought one on ebay and was surprised to only see 5 bades.
Leigh
23-Dec-2011, 11:38
Mine is in a factory-original black-rim Copal #0 with seven blades.

- Leigh
Steve Goldstein
23-Dec-2011, 11:47
Ditto
Oren Grad
23-Dec-2011, 11:49
Mine too.
Frank Petronio
23-Dec-2011, 11:50
Are you counting the blades or the pentagon they make?
Leigh
23-Dec-2011, 12:01
Huh???

- Leigh
Oren Grad
23-Dec-2011, 12:03
Are you counting the blades or the pentagon they make?

Frank, it's the same, at least with this shutter - no oddball blade geometry. 7 blades make a 7-sided opening.
Leigh
23-Dec-2011, 12:40
I believe the seven-blade Copal 0 began life as a special for Nikon.

It's identified on their lens shutters by a capital S in a circle, and touted in their literature.

Apparently Copal decided to make that the standard configuration for the shutter.

- Leigh
mdm
23-Dec-2011, 13:17
All my Rodenstock lenses have 7 blades but an older 180 fujinon A has 5. Never thought to check.
herbet
23-Dec-2011, 16:31
I never thought about it either until I saw these pentagon shaped highlights in the OOF area and thought "what the...". the seller must have had it changed at some point then. I guess I should've asked before buying. interestingly enough, everything I can find on the internet about copal #0 says it has 5 blades. including Schneider's lens pages. unfortunately Rodenstock has no info on the # of blades. is the 7-bladed version specially made for some lens manufacturers?
mdm
23-Dec-2011, 16:37
I have learned that if I am ponting it at the sun, never to use a Sironar S. Flare. A fujinon C, ronar or a dagor seems better.
Steve Hamley
23-Dec-2011, 16:48
Same experience with the 135mm Apo Sironar-S; bad iris ghost confirmed by another photographer who owns one too. Note that I have not had this problem with a 180mm Apo Sironar-S. I've spoken with Bob Salomon about it.

I think these issues can vary with FL and shutter size, so be careful that you specify exactly what you have seen with what lens and avoid generalities.

Cheers, Steve
Leigh
23-Dec-2011, 18:59
... is the 7-bladed version specially made for some lens manufacturers?
Read post #8, submitted four hours before the question quoted above.

When people take the time to post replies you should at least have the courtesy to read them.

- Leigh
herbet
23-Dec-2011, 19:23
chill mate. I read your post, but if they standardized in 7-blade how come it shows up with 5-blades everywhere?
http://mpex.com/copal-0-shutter.html
http://www.schneiderkreuznach.com/foto_e/zubehoer_grossformat.htm
Leigh
23-Dec-2011, 20:32
I have no clue, mate. Sorry.

The Copal #0 drawing on the SK Grimes site (which is the one from the Copal brochure that ships with the lenses), and the photo on the Badger Graphic site both clearly show five blades.

I have six lenses in Copal #0 shutters:
The 65mm/4, 75mm/4.5, and 120mm/5.6 Nikkor SWs are in "circle-S" seven-blade shutters.
The 135mm/5.6 and 150mm/5.6 Apo-Sironar-S Rodenstock shutters also have seven blades.
The 90mm/5.6 Fujinon SWD is in a silver-rim Copal #0, so I didn't check it.
I have no Schneider lenses, so I can't comment on them.

Perhaps Rodenstock jumped on the Nikon seven-blade option.

I would suggest you email your question to SK Grimes. They should have an authoritative answer. www.skgrimes.com

- Leigh