Hello Shel, I'm wondering if you are mistaking DOF focus for blur. At 600mm, there is not a lot of DOF especially at that distance. But I can see individual hairs on the spider's body and the legs are all clear, rather than blurred. Since it is taken on an angle from the web, the plane of focus will cause the web to get further and further out of focus. Is that what you are seeing?
For focal length, I was not including the crop factor of the sensor - maybe I should. -- Bruce Monday, December 4, 2006, 4:07:51 PM, you wrote: SB> Doesn't look very sharp to me - certainly not up to your usual standards, SB> Bruce. Did you perhaps miss focus or is the pic less-than-sharp because of SB> shake? Or do I need new glasses? SB> BTW, I get an "effective" focal length of 840mm: 400mm x 1.5 crop factor X SB> 1.4 teleconverter. Am I miscalculating? If not, the results are pretty SB> good for a hand-held shot. What focal length did you select for activating SB> the SR? Do you think the results might have been better had you chosen a SB> different focal length? SB> Shel >> [Original Message] >> From: Bruce Dayton >> I have posted this partly to show SR on the K10D. So this is shot >> with the 400/5.6 half a stop from wide open with the 1.4x converter >> for an effective 600mm focal length. This was shot handheld with the >> SR system activated. >> >> As for the shot, this guy was feeding on something - I couldn't get >> very close to really check it out, hence the long lens setup. >> >> >> Pentax K10D, Tokina 400/5.6 ATX-SD, Sigma 1.4X EX Converter >> ISO 800, 1/350 sec @ f/6.7, SR on >> Partial crop >> >> http://www.daytonphoto.com/PAW/ggpark_065a.htm -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
