I owned the original "Bigma" and used it on a Pentax K20D DSLR. While the lens was a bargain, I found the optical quality lacking most of the time. Focusing was dodgy (partial credit also goes to older-generation Pentax AF) and I just felt that the margin of error was thinner with this lens than with others. I did obtain several acceptable shots with it, and really enjoyed the huge focal range. But eventually I sold it.
While it's not right to compare this configuration with the Canon 7D + 100-400mm L lens I am using now for similar work, I do think the optics of the Sigma are significantly inferior. For the record, the Sigma 70mm f2.8 macro lens I own is outstanding.
ME
Posted by Basil Greber on June 30, 2011 at 5:13 PM
I have to admit that I'm not really interested in that lens, but I liked some of the sample shots quite a lot.
Discussion
4 repliesThis lens may solve the big lens "question" for many unwilling to lay $8000+ into a prime.
Sandy
I owned the original "Bigma" and used it on a Pentax K20D DSLR. While the lens was a bargain, I found the optical quality lacking most of the time. Focusing was dodgy (partial credit also goes to older-generation Pentax AF) and I just felt that the margin of error was thinner with this lens than with others. I did obtain several acceptable shots with it, and really enjoyed the huge focal range. But eventually I sold it.
While it's not right to compare this configuration with the Canon 7D + 100-400mm L lens I am using now for similar work, I do think the optics of the Sigma are significantly inferior. For the record, the Sigma 70mm f2.8 macro lens I own is outstanding.
ME