I understand what you're saying. I just hate the constant "it must be 35mm or it's shite" attitudes I see so repetitiously promulgated on the web.

The other point of view is also worth thinking about. A number of lenses that had great center image circle performance but poor edge/ corner performance have a new life on 16x24 and FourThirds format cameras. Like that aforementioned Pentax M50/1.4 ... wide open, it's edge/corner performance is pretty poor on 35mm, but it works satisfactorily on FourThirds wide open (still best at f/2-2.8 of course).

Beyond that, I'm certain that anyone on this equipment mailing list understands that both Pentax and FourThirds DSLRs are a different format from 35mm film SLRs. I see no reason to mention it every single time some new lens or camera comes out.

Godfrey


On Jan 15, 2009, at 8:26 AM, Jaume Lahuerta wrote:

OK, I see your point but I'll try to explain mine, which I think is complementary rather than contrary.

It seems that a lot of the interest in this camera / system is the ability to use any kind of old lenses on it through adaptors. Regarding this, I have a colleague at work that collects all kind of old lenses, specially m42 screwmounts, and uses them with the *ist Ds that I sold to him and in a EOS 350D. I told him about this system and his response was "yes, but they will look as 2 x focal length, so no more wide angles. I am not interested on this".

And then I remembered about my Pentax A24/2.8, that was one of my favorites when shooting film since it gave me a field of view that none of my other lenses could give. However, I have almost never used (except for comparison tests) in digital due to its 'new' field of view.

That's just what I wanted to say: be careful if you are considering this system in order to use your old lenses on it because the 'conversion factor' (or whatever you want to call it) is greater that on APS-C. Having said that, I realize that for some people this may be an advantage, but for others, like my colleague, it was a clear disadvantage when using his old lenses. If you like a lens just for its pure optical quality, then fine, it will preserve it. But if you like a lens for the combination of optical quality and field of view (which was my case with the 24mm), then the game is over.

Just wanted to make sure that, whatever category the readers fit, they know in advance about this.

Regards,
Jaume


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