This is scaled down from 1311x1817, doesn't seem to add any artifacts though. The ant stands out quite clearly on my monitor as the only area of true black. May be my calibration though, I'll have to check it again, it's been a couple of months.
Don > -----Original Message----- > From: Godfrey DiGiorgi [mailto:[EMAIL PROTECTED] > Sent: Sunday, August 28, 2005 2:00 PM > To: [email protected] > Subject: Re: PESO: Morning Stroll > > > On Aug 28, 2005, at 6:10 AM, Don Sanderson wrote: > > > Out playing with the A50/1.4 (Which I still don't get along with.) > > I came up with this Photo/Pic/Snap/Image or whatever it is: > > http://www.donsauction.com/pdml/Vert_Ant.htm > > I like the shot. It took a bit of study to notice the ant as it's not > particularly well separated from the surrounding elements of the photo. > > > It's a bit different, and it shows the weird Bokeh I get with _my_ > > 50/1.4. Others seem to get much smoother OOF areas. > > Fairly large file, about 216K. Cropped from a .JPG. > > Is this a 100% crop section, or scaled? When evaluating a lens' > rendering with a digital camera, you have to be very careful to > separate what is produced by the lens vs what is produced as an > artifact of the scaling of an image. Scaling of out of focus blur on > repeating patterns, for instance, can cause them to become > accentuated at integral multiples of the original capture resolution, > and attenuated at other scaling factors. > > I've often had to do some additional rendering work after scaling an > image for web resolution to reduce or eliminate this kind of artifact. > > Godfrey >
