At f3.1, (maximum aperture for this lens at 100mm) and 2.6ft, (minimum focus distance), the DOF is about 6.8mm according to my DOF calculator. I focused on the leading edge of the furthest right petal on the semi circular group of petals in the lower right center. I should have probably focused about 3mm further back. I think it's not bad for hand held. The fact that the leading edge of the cupped petals to the lower center right. and the purple-pink tendrils to the left are relatively sharp, (though the rolled up petals at the bottom center may be sharper), is pretty good performance for a lens at it's limits)..
[EMAIL PROTECTED] wrote: > In a message dated 10/7/2007 12:35:41 A.M. Pacific Daylight Time, > [EMAIL PROTECTED] writes: > Yet another test with the Vivitar Series 1 70-210mm f2.8~4.0. > > http://www.mindspring.com/~happydogsoftware/PESO%20--%20makeitpop.html > > Equipment: Pentax *ist-Ds/Vivitar Series 1 70-210mm f2.8~4.0 VMC Macro > Focusing Zoom > > Note: So far the *ist-Ds has loved this lens. It handles well, hits the > exposure almost dead on just about every time producing very easy to > manipulate raw files. I've been playing with this lens using flash and > I've come to a couple of surprising conclusions which I will probably > write up eventually. > > Disclaimer: This is primarily a test of the lens, I haven't been trying > to make high art, just get good exposures and reasonable focus with a > variety of subjects. I'd like to know if I succeed but my standards for > these are relatively low. On the other hand some thought that the last > flower shot lacked punch, so this one I've punched up quite a bit. (I > didn't revise "Blue" because I liked it the way it was). > > > =============== > Blue was fine the way it was. I think I thought the background was a shade > pink and I wasn't sure I liked it that way. And it was good enough to show > standalone and not in a group of three. :-) > > I think this one is a little too soft. While some shallow DOF would be fine, > all of it looks a little too soft to me. > > HTH, Marnie Not sure this is as nifty a lens as you think it is. :-) But I > am not a lens testing type of gal, and really know very little about it, so > take with a big grain of salt. > > --------------------------------------------- > Warning: I am now filtering my email, so you may be censored. > > > > > ************************************** See what's new at http://www.aol.com > > -- Remember, it’s pillage then burn. -- 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.
