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Orio
Joined: 24 Feb 2007
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 Posted: Mon Sep 20, 2010 9:25 am Post subject: Viewfinder for flash shoe |
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Orio wrote:
I bought one, it is well contrasted, but the measurements are wrong. Like, it says 6-9 meters when they're actually 4.
Do you know if these objects can be calibrated? There are two little screws to open the box.
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Attila
Joined: 24 Feb 2007
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| Posted: Mon Sep 20, 2010 9:35 am Post subject: |
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Attila wrote:
Did you mean external range finder ? Yes, you can calibrate them.
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std
Joined: 09 Feb 2010
Posts: 1827
Location: Bulgaria
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| Posted: Mon Sep 20, 2010 10:01 am Post subject: |
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std wrote:
Hi Orio
I have an 1 page manual from one old german accessory rangefinder (watameter brand) at home. I can scan it and post it later today - there is a description how to calibrate it there .. if it is useful for you.
BR,
Stefan |
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ludoo
Joined: 18 Sep 2009
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| Posted: Mon Sep 20, 2010 10:13 am Post subject: |
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ludoo wrote:
Orio, the usual way to calibrate a simple rangefinder is to check that:
* vertical alignment is correct, if not fix it first, usually it's a screw behind the rf mirror (the one behind the rf window, not the semitransparent one behind the vf)
* horizontal alignment at infinity is correct, usually fixed with a dedicated screw
Your best bet is to open it, and check the mechanism: external rangefinders are usually really simple, and with it open you'll immediately spot the alignment screws.
Sometimes vertical alignment is registered by rotating a lens between the rf mirror and the semitransparent mirror. On the other hand, really simple rangefinders often have no screw to register the vertical alignment, and the only way is to slightly bend the rf mirror (not the semitransparent one behind the vf).
In doubt, post pics. |
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Orio
Joined: 24 Feb 2007
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| Posted: Mon Sep 20, 2010 10:16 am Post subject: |
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Orio wrote:
Thanks Ludoo
THe alignment is perfect. It's the distances that are wrong.
Can I fix the distances?
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ludoo
Joined: 18 Sep 2009
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| Posted: Mon Sep 20, 2010 10:26 am Post subject: |
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ludoo wrote:
| Orio wrote: |
Thanks Ludoo
THe alignment is perfect. It's the distances that are wrong.
Can I fix the distances? |
Strange. You mean infinity is perfect, and distances get progressively screwed up focusing near? It should not happen. If it is so, I think you'll have to open it up and post pics of the insides. |
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Orio
Joined: 24 Feb 2007
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| Posted: Mon Sep 20, 2010 10:27 am Post subject: |
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Orio wrote:
| ludoo wrote: |
| Orio wrote: |
Thanks Ludoo
THe alignment is perfect. It's the distances that are wrong.
Can I fix the distances? |
Strange. You mean infinity is perfect, and distances get progressively screwed up focusing near? It should not happen. If it is so, I think you'll have to open it up and post pics of the insides. |
It's the other way around. They are decent (but not perfect) close, and more and more wrong in the distance.
I don't understand, I did not mention that, I just would like to know if it's possible to fix the distance. Aligment is ok.
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Orio
Joined: 24 Feb 2007
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| Posted: Mon Sep 20, 2010 10:28 am Post subject: |
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Orio wrote:
| Orio wrote: |
| ludoo wrote: |
| Orio wrote: |
Thanks Ludoo
THe alignment is perfect. It's the distances that are wrong.
Can I fix the distances? |
Strange. You mean infinity is perfect, and distances get progressively screwed up focusing near? It should not happen. If it is so, I think you'll have to open it up and post pics of the insides. |
It's the other way around. They are decent (but not perfect) close, and more and more wrong in the distance.
I don't understand, I did not mention that, I just would like to know if it's possible to fix the distance. Aligment is ok, the overimposed images are clear. |
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ludoo
Joined: 18 Sep 2009
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| Posted: Mon Sep 20, 2010 10:29 am Post subject: |
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ludoo wrote:
| Orio wrote: |
It's the other way around. They are decent (but not perfect) close, and more and more wrong in the distance.
I don't understand, I did not mention that, I just would like to know if it's possible to fix the distance. Aligment is ok. |
Hmmmm, open it and post pics so that we can brainstorm the issue.  |
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ludoo
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| Posted: Mon Sep 20, 2010 10:32 am Post subject: |
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ludoo wrote:
Hmmmm thinking about it more, what you are saying is that alignment is off at infinity. Put the distances dial at infinity, then register alignment until it's perfect. Then check near distances and let us know. |
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Orio
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| Posted: Mon Sep 20, 2010 10:38 am Post subject: |
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Orio wrote:
Thanks, if I feel brave enough I will try. I hope just not to move the wrong screw 
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ludoo
Joined: 18 Sep 2009
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| Posted: Mon Sep 20, 2010 11:10 am Post subject: |
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ludoo wrote:
| Orio wrote: |
| Thanks, if I feel brave enough I will try. I hope just not to move the wrong screw |
Just use the right screwdriver and don't force anything, and you won't break anything. |
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visualopsins
Joined: 05 Mar 2009
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| Posted: Mon Sep 20, 2010 4:33 pm Post subject: |
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visualopsins wrote:
| ludoo wrote: |
| Orio wrote: |
| Thanks, if I feel brave enough I will try. I hope just not to move the wrong screw |
Just use the right screwdriver and don't force anything, and you won't break anything. |
the unsaid: mark or take photos of original settings to reset later if necessary!
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std
Joined: 09 Feb 2010
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Location: Bulgaria
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| Posted: Mon Sep 20, 2010 4:56 pm Post subject: |
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std wrote:
Here's the manual.
hope it helps if it's from the same type.
Click on the pix for good resolution.
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Orio
Joined: 24 Feb 2007
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| Posted: Mon Sep 20, 2010 5:00 pm Post subject: |
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Orio wrote:
It's really a Watameter! How could you know?
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Attila
Joined: 24 Feb 2007
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| Posted: Mon Sep 20, 2010 5:22 pm Post subject: |
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Attila wrote:
Voigtlander works , rest of it don't  I bought a few ones only Voigtlander did work
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std
Joined: 09 Feb 2010
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Location: Bulgaria
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| Posted: Mon Sep 20, 2010 6:24 pm Post subject: |
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std wrote:
| Orio wrote: |
| It's really a Watameter! How could you know? |
Watameters are quite common - i have 2 pieces - one in meters and one in ft.
Adjustment should be very simple just turn the small wheel until you got the distances right.
BR,
Stefan |
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Orio
Joined: 24 Feb 2007
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| Posted: Mon Sep 20, 2010 7:37 pm Post subject: |
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Orio wrote:
| std wrote: |
| Orio wrote: |
| It's really a Watameter! How could you know? |
Watameters are quite common - i have 2 pieces - one in meters and one in ft.
Adjustment should be very simple just turn the small wheel until you got the distances right.
BR,
Stefan |
Sorry, what small wheel? Is it inside?
I can't see any wheel on the outside (except for the one that serves for focusing).
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std
Joined: 09 Feb 2010
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| Posted: Tue Sep 21, 2010 6:53 am Post subject: |
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std wrote:
| Orio wrote: |
Sorry, what small wheel? Is it inside?
I can't see any wheel on the outside (except for the one that serves for focusing). |
it's like a small knob on top of the big wheel you use to measure distance.
not my picture but you can get the idea.
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