Tech Camera Users with Copal-shuttered lenses please take note

[tjv]

Hmmmmm... Just discovered this thread. I've been doing it wrong all this time!

 

[torger]

One question that is not entirely clear to me. I understand that it is really bad to change shutter speed with the shutter cocked. However, what about this workflow:

1. open shutter and aperture compose
2. change shutter speed
3. change aperture.
4. cock shutter.
5. realize that you haven't closed the shutter yet => close shutter
6. trigger shutter.

ie closing the shutter late. A few times I forget closing the shutter, and only note it when I cock the shutter, as the shutter then will make a ticking sound until I close it.

My understanding is that changing aperture with the shutter open or closed does not matter at all. Changing shutter speed I think should be okay with the shutter open, but possibly cocking the shutter while it is open and then close it could be harmful?

 

[wryphotography]

Huh. With my 617, the thought of changing the shutter speed after cocking the shutter never occurred to me. I only ever cocked the shutter once everything was set and i checked it twice. But good to know that it will ruin it if done.

 

[alajuela]

Huh. With my 617, the thought of changing the shutter speed after cocking the shutter never occurred to me. I only ever cocked the shutter once everything was set and i checked it twice. But good to know that it will ruin it if done.

Same here, cocking the shutter is last thing I do. Unless I forget to....

1. Close the aperture after focusing (either live view or GG)

2. Forget to cock the shutter

In either case 1 or 2, I feel a bit like an idiot, and have to wait for the back to do its thing, usually a 3 - 4 second process - and a error message on the screen. Then a hit on the head and carry on, and do the last thing.

It never dawned on me to adjust the shutter speed last thing. I always feel that exposure setting and framing were the preparation, cocking and firing were the end.

Sorta Ready Aim Fire :salute:

Phil

 

[tjv]

Well, today I was out shooting and it took me a while to get used to the change in workflow. By the end of the day though, I remembered to refrain from cocking the shutter immediately after making an exposure. I can't believe I haven't heard this information before and that it's not mentioned within official lens / shutter documentation.

 

[Jack]

You can change it after cocking, but the added tension on the timing cams and clockwork may render less accurate/consistent speeds and can cause undue wear to the shutter speed timing mechanism.

 

[jlm]

i leave the shutter un-cocked when the lens is not in use; generally cocking just before making the exposure

jm

 

[tjv]

You can change it after cocking, but the added tension on the timing cams and clockwork may render less accurate/consistent speeds and can cause undue wear to the shutter speed timing mechanism.

Yeah, I've been in the habit of cocking the shutter immediately after each exposure so to ensure a long life for my shutters I'll make sure to change my workflow.

 

[Geoff]

Thanks much for this.

So its "CASC"?

Close shutter
Aperture set
Speed set
Cock shutter