Archived posting to the Leica Users Group, 2007/11/07

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Subject: [Leica] Changing eyes, M focusing
From: phamard at numericable.fr (Philippe Amard)
Date: Wed Nov 7 12:16:58 2007
References: <Pine.LNX.4.62.0711071205340.11412@mail.2alpha.com>

No M but progressive specs - gets some getting used to, but then you no 
longer want to do without them - you can drive AND watch the clock for 
instance.
For photography, AF is a fine solution too.(I know some will hate this)
Yours
Phil...x


Peter Klein wrote:

> Up until recently, both my glasses and contacts prescriptions were 
> fine for focusing an M camera. When I got the M8, the smaller 
> magnification made focus a little more difficult, but still quite doable.
>
> My latest prescription has changed all that. I can still focus the M8 
> fine in bright sunlight. But in standard room lighting and dimmer, I'm 
> having difficulty focusing at about 2 meters and closer. The 
> viewfinder image is slightly blurry--just enough to throw me off.  The 
> issue is the same with both glasses and contacts.  All this is after I 
> looked at my optometrist's eye chart through the M8 viewfinder with 
> various corrections, and he adjusted my prescription accordingly.
>
> My optometrist says my eyes are healthy, I'm just near-sighted and 
> middle-aged.  :-)
>
> It seems like a single screw-in diopter correction for the M bodies is 
> not the answer, as the viewfinder itself seems fine for 2 meters and 
> farther, but I need something different as I get closer.  A couple of 
> solutions come to mind:
>
> 1) Progressive lenses in my glasses
> 2) An adjustable diopter correction for the M8
>
> Progressive lenses might work. I guess you just hold the camera lower 
> on your glasses for focusing on nearby objects. Since I do computer 
> work, progressives might mean I could get by with only one pair of 
> glasses.
>
> Now, I tried progressives about 10 years ago. I used them for about a 
> month, but couldn't quite get used to them. I was perceiving varying 
> barrel distortion and other weird effects like the image "following 
> sligthtly behind" as I turned my head from side to side, and it drove 
> me nuts.  I much preferred ordinary bifocals, so I ended up with them, 
> plus a additional single vision pair of glasses for computer work.  
> Maybe now that I've had the experience of adjusting to monovision 
> contacts, I might be more adaptable(?)
>
> The Megaperls magnifiers have an adjustable diopter correction. Their 
> 1.15x magnifier would bring the M8 image up from .68x to .78x, and I 
> could probably just leve it on the camera for lenses from 28mm to 
> 90mm. It would give me a diopter adjustment I could tweak between near 
> and far. This would work with contacts as well as glasses.
>
> So, calling all middle-aged dudes and dude-ettes with M cameras!  How 
> have you coped with creeping presbyopia? Have you tried progressive 
> lenses, and how do they work for you, both with M cameras, and in real 
> life?  Have you adjusted well to them?  Do you get a stiff neck from 
> pitching your head up and down to "focus," or is it pretty natural 
> after a while?
>
> And does anyone have experience with the Megaperls magnifiers?  How 
> usable are they with glasses, and is the diopter adjustment useful for 
> dealing with near vs. far focusing?
>
> Thanks, all!
> --Peter
>
>
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>

Replies: Reply from hoppyman at bigpond.net.au (G Hopkinson) ([Leica] Changing eyes, M focusing)
In reply to: Message from pklein at 2alpha.net (Peter Klein) ([Leica] Changing eyes, M focusing)