[Leica] Canon 1D X -- the real marker to the end of the mega-pixel wars?

[rgacpa at gmail.com (Bob Adler)]

You are correct of course. The holder for my back, on the Alpa system, comes 
with gaskets that are between .01 and .05mm, in .01mm increments. You have 
to calibrate your back, as in this video:
http://www.optechsdigital.com/Videos.html
Scroll down to the three videos under Shimming the Alpa. 

So when I did it to my system, .01mm made all the difference. Pretty 
sensitive!

Bob Adler
http://www.rgaphoto.com

On Oct 18, 2011, at 9:12 PM, George Lottermoser <imagist3 at mac.com> wrote:

> 
> On Oct 18, 2011, at 11:05 PM, Robert Adler wrote:
> 
>> With my MF back adapter, one simply removes the GG holder and replaces it
>> with the MF back holder. It's not that hard on the Technikarden S I have.
>> The back doesn't move: I use the back shift and rise/fall to move the MF
>> back around.
>> I'll have to try it again someday soon to see what I get...
> 
> I can only report that I've read of others finding it very difficult to 
> calibrate the sensors on the backs to the exact positioning of the ground 
> glass ? thus the ultra expense of the various pieces of kit to arrive at 
> the necessary precision.
> 
> My only experience with medium format backs has been with occasional 
> rentals for my 500CM;
> and simply live with lust re: ownership of a kit for the Ultima.
> 
> Regards,
> George Lottermoser 
> george at imagist.com
> http://www.imagist.com
> http://www.imagist.com/blog
> http://www.linkedin.com/in/imagist
> 
> 
> 
> 
> 
> 
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