[Leica] 90 Summicron (Canada): still front-focussing!

[lluisripollphotography]

Peter,

Two years ago I’ve sent to Leica my Summilux 75mm to be calibrated, and 6 bit  coded. The service was very expensive but now it works perfect. I didn’t sent the camera. 
Lluis




> El 11 gen 2017, a les 2:49, Peter Cheyne <peter.cheyne at gmail.com> va escriure:
> 
> I was beginning to feel confident that someone in the US could correct my
> front focussing 90 Summicron (Canada). However, I got the following reply
> from DAG Camera:
> 
> thanks for the test shots with your leica lenses, your Summicron 2/90mm
> lens is slightly front focusing. I'm sure if you took a photo w/your
> Summicron 90mm of an object 20 meters away the results would be severe
> front focusing. Its easy to say  that your 2/90mm lens is front focusing,
> however if you took 10 M9 cameras that were correctly adjusted & shot with
> your 2/90mm lens you might get at least 3 different results. Perhaps 3
> lenses would give you front focusing, 2 lenses might give you accurate
> results & the rest might give you something in between. That can happen
> with lenses that are longer than a 50mm lens with the M digital cameras. I
> would say that you would be better off sending your lens to Leica in
> Germany. That way no matter how the results of your lens would be, you
> would feel better about it.
> 
> 
> I'm surprised M9 specifications are so variable. I told Don my M9 sensor
> was recently replaced by Leica, so I am confident the accuracy of the
> camera is within their specifications. Here are the test shots I sent him:
> 
> https://www.flickr.com/gp/geordiepete/12gtE6
> 
> It's looking like I'd be best off sending the 90 Summicron to Leica
> Germany, and that I might have to send my M9 too, for testing only, saying
> that my other lenses are accurate with this camera so it is not to be
> altered.
> 
> Peter
> 
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