[OM] Re: Film pro goes digi, another E-1 photo

[Jeff Keller]

> -----Original Message-----
> From: Chuck Norcutt
> 
> Jeff Keller wrote:
> 
> > I don't think Olympus ever said the lens mount had to be large. The 
> > E-System lenses don't have very large rear elements. 
> -----------------------------------------
> 
> Read points 4 thru 11 of the following 4/3's marketing blurb
> 
> <http://www.four-thirds.com/pdf/FourThirdsSystem.pdf>
> 
> Chuck Norcutt
> 
Thanks for sending that Chuck. I don't recall having seen that one before.
The rear element on the 50-200 & the 1.4x TC is about 7/8" in diameter. The
rear element of the 7-14 is about 9/16". 

The square baffle placed just inside the camera's mount is 1" square vs. the
nearly 1.75" opening of the mount.

I think point 9 is especially misleading placed just before point 10.
Clearly if the light rays are truly perpendicular the opening doesn't have
to be any larger than the sensor. I think they have written that in a way to
intentionally make the reader assume things they don't actually say. While
comparing what they say to what I see in the camera I don't see that they
say anything that is inconsistent nor do they actually say the mount has to
be that large. I think they are trying to get the reader to assume that a
full frame digital sensor would require a mount larger than used by a film
camera (i.e. C*non & others couldn't use a film camera mount with a full
frame sensor without sacrificing quality). They don't actually say that
though ;^)

-jeff


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