Jaume, I think you make a good point about buying to use old lenses. I never thought the M28/2.8 lens was a very good performer. I think Pentax was always under-represented in wide angles. Yes, there are 24's, 20's, and a 15mm, but they are rare and expensive. Buying a micro 4/3rds camera to use old lenses is problematic. Regards, Bob S.
On Thu, Jan 15, 2009 at 10:26 AM, Jaume Lahuerta <[email protected]> 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 > > > > ----- Mensaje original ---- > De: Godfrey DiGiorgi <[email protected]> > Para: Pentax-Discuss Mail List <[email protected]> > Enviado: jueves, 15 de enero, 2009 16:32:35 > Asunto: Re: Panasonic G1 ... example photo @ ISO 1000 > > I absolutely despise all this "crop factor" nonsense. It's so ridiculous. > > There's no such thing as a crop factor. Field of view is a property of a > focal length combined with a format. Normal on 35 film is 50mm, normal on > FourThirds is 25mm, normal on 645 is 75mm, etc. That's all. > > My FourThirds cameras include field of view choices from 89 to 4.4 degrees on > the diagonal, using lenses with focal lengths from 11 to 280 mm. A Pentax > M50/1.4 provides an excellent long-portrait-tele field of view. > > 80-90% of my G1 photos to date have been made with the 25mm lenses I have. A > near perfect kit for the G1, for my photography, will have the lenses 7-14/4, > 20/1.7, 25/2.8 (and f/1.4), 40/1.4 and 75/2.5 in it. I don't have them all > yet ... two aren't available yet ... but that's where it's going. > > Godfrey > > > On Jan 15, 2009, at 12:56 AM, Jaume Lahuerta wrote: > >> Before doing something that you can regret, remember the conversion factor >> that 4/3 and m4/3 introduces in a 35mm lens, which is 2 instead of 1.5 for >> APS-C. > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > > > > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
