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Diopters


marcg

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Leica in their infinite wisdom have chosen not to fit an adjustable diopter to their latest M camera - (along with all of the other M's).

 

Instead, you can shell out more of the folding stuff for a fixed correction diopter.  However, as I understand it, they offer .5, 1.0, 1.5, 2.0 - and then 3.0 etc.

 

There doesn't seem to be a 2.5.

 

Does anyone know if one can piggy back a .5 with a 2.0?

 

But in any event, I really don't understand why Leica can't fit an adjustable diopter - unless it is simply that they realise that most of their customers are probably of an age that they now need some kind of spectacles - and it is a nice earner for them - and also I don't understand why they don't cater for people who need a correction factor of 2.5.

 

If you can piggy back 2 diopters then I have to say that carrying a £6000 camera around which also needs to carry £250 worth of diopter sticks in one's craw a little.

Especially as unlike autofocus cameras, the diopter on an M10 functions far more than as a mere framing tool.

Edited by marcg
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Having needed a dioptre for M9, 240, 262 etc I found with the M10 even though focusing was fair without one, it was worth the cost and fitting the new-size dioptre. I am sure you know there's an inbuilt factor so you really need to try before you buy. Maybe Leica feels there's little effective difference between 2 and 3.

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Thank you for this but I'm afraid that it doesn't address the issue. 

 

I am using the new diopter which I purchased in size 2.0.  I would like a 2.5.  A 3.0 is too strong.

 

So far as what Leica thinks about the difference between 2.0 and 3.0 - my eyes tell me a different story.  Which of us is right?  Can't be me - I'm only a customer, after all.

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I have several of the Leica diopters which fit the models prior to the M10 (which has a larger eyepiece).  Mine do not have a thread on the outside that would accept a second diopter.

 

If you are far-sighted try an eyepiece magnifier.  In my case using a Leica eyepiece magnifier changes the diopter correction I need.  A +1.0 on the camera becomes a +1.5 with the magnifier.  I don't know the reason, but the effect of the magnifier seems to be to bring the image in the viewfinder closer (and larger) so I need additional correction in order to focus properly.  So if you need something between +2 and +3  adding a magnifier might make the +3 work.

Edited by Luke_Miller
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I have several of the Leica diopters which fit the models prior to the M10 (which has a larger eyepiece).  Mine do not have a thread on the outside that would accept a second diopter.

 

If you are far-sighted try an eyepiece magnifier.  In my case using a Leica eyepiece magnifier changes the diopter correction I need.  A +1.0 on the camera becomes a +1.5 with the magnifier.  I don't know the reason, but the effect of the magnifier seems to be to bring the image in the viewfinder closer (and larger) so I need additional correction in order to focus properly.  So if you need something between +2 and +3  adding a magnifier might make the +3 work.

 

I had the same experience with diopter and magnifier but cannot really explain it!

Albert

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I'm not sure, but the native -0.5 of the eyepiece is meant to facilitate accomodation between the virtual distance of the rangefinder patch (which is 2m) and the background.  If you change the focal length of the viewfinder by adding a magnifier, you are sure to alter the balance between fore- and background, which will change the needed correction.-I think...

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I have special glasses for computer, why not for camera?  

 

Computer glasses work on camera, but not well for distance.  Solution being computer correction for camera eye and other for distance.  Since you need but .5 change,  lower or raise camera eye lens .5 and leave the other alone.  Sounds expensive, but astigmatism is taken care of if you have it,  and one pair is good good for multiple cameras.  

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  • 3 years later...

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