RE: [Leica] Digital Bessa?

["B. D. Colen" <bdcolen@earthlink.net>]

It's a bitch. And that is one of the true advantages of the full-size
sensor. The factor, as I said, varies according to the sensor size. I
believe the Canon DSLR's it's about 1.3, and Nikon it's about 1.5 - or
maybe it's the other way around. With the Olympus it's a hair under 2,
but becomes irrelevant as the camera has it's own lens line.

B. D.

- -----Original Message-----
From: owner-leica-users@mejac.palo-alto.ca.us
[mailto:owner-leica-users@mejac.palo-alto.ca.us] On Behalf Of sam
Sent: Friday, February 13, 2004 5:18 PM
To: leica-users@mejac.palo-alto.ca.us
Subject: Re: [Leica] Digital Bessa?


I've only skimmed the messages relating to the problem of changed focal 
length in digital. I didn't realize the difference was so great. That is

a problem. Having to buy new lenses to round out the ones that have 
become effectively less desirable will be costly and defeats the very 
purpose of wanting a digital M camera, re: using existing lenses on the 
new body.

Sam S



B. D. Colen wrote:

> That's true Sam - I'm certainly happy with the results I'm getting 
> with the 4/3 sensor in the Olympus E-1. BUT - if you have a sensor 
> that's less than 35mm full-frame, you have a magnification factor for 
> the lenses you use if you're using 35 mm lenses. For instance, the 
> factor for the 4/3 sensor is just under 2x, which means that to get a 
> 35 mm equiv of a 100 f 2 macro, you're using a 50 f2. What that means 
> in terms of whatever body becomes available for the M lenses is that 
> we won't be using them at standard focal length - and we won't have 
> any real wides - For instance, if the factor is 2x, the 21 2.8 becomes

> a - ho hum - 42 2.8. The 35 1.4 becomes a 70 1.4 - which will be a 
> great lens at a weird, in between focal length...the 28 f 2 Summicron 
> becomes a 56 f2 - sharp as a tack, but not a great 28 any more...and 
> so on. And if you want anything wide at all, you're only real option 
> would be the Cosina 12 f 5.6 that isn't rangefinder coupled...and it 
> would give you a 24 f 5.6 without rangefinder 
> coupling....Soooo...There are advantages to larger sensors that have 
> nothing to do with image "quality." And while we don't know what size 
> sensor this Cosepson will have, it's probably a safe bet it won't be 
> full frame....
>

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