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Flash Mount Viewfinder?


Svassh

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Searched the entire web with no answer. Maybe I'm using the wrong term. I see that some wide angle and telephoto lenses come with a flash shoe mounted viewfinder. 

 

My question is when using one of these does the focus work the same way it does thru the normal viewfinder, ie split image?

 

Thanks

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I'd say yes: the thing that clips onto the flash shoe contains the frame lines for its lens..since those frame lines are not available from the viewfinder in the camera body. I don't have any of those lenses so hopefully somebody will confirm.

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As I said I don't have any such lens(es?) and I don't have an M8(.2) - but if I did attach, say a 21mm to an M8 and use the 'external' viewfinder would the frame lines be inaccurate due to the crop factor?

 

Sorry to confuse - just done some research and the Leica 21mm viewfinder, at least, contains lines for M8 too.

Edited by Denys
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[...] if I did attach, say a 21mm to an M8 and use the 'external' viewfinder would the frame lines be inaccurate due to the crop factor? [...]

 

A 21mm external VF would show a 21mm field of view more or less whereas that of a 21mm lens would be 21 x 1.33 = 27.93mm on the M8 due to the crop factor.

What you'd need for this lens is a 28mm VF then. Or keep the 21mm VF and put a 16mm lens on the M8.

Edited by lct
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On the M 240, the electronic viewfinder also allow you to focus and set aperture while framing. But is the only one and only on the M 240 series and on. A non electronic viewfinder just allow you to frame, after you have focused and set the aperture in the rangefinder.

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