On Thu, 30 May 2002 18:28:06 -0700, Bill D. Casselberry wrote: > TM wrote: > > > [...] the shutter or the fence that caused this. [...] > > Could you see the fence in the viewfinder, all out of focus? > If so - it makes some sense that its "shadow" lessened exposure > [...]
If someone's got a couple of meg of web space, I can provide a couple of images from a recent race shoot that clearly show a blurry fence. I was using a 400/5.6 lens and the subject (focus) was about fifty feet out (about 15m), the fence was at maybe three feet (just less than 1m). For confirmation, I'd take the image into Photoshop, convert it to gray scale, and enhance the heck out of the contrast, just short of posterization. Then look for the telltale "cross hatch" pattern in the density variations. If the pattern is not there, you can rule out the fence, with very high probability. If the pattern is there you can't rule out the fence, and there's probably a pretty high probability that the fence is the issue. Of course, you can't be 100% confident on that little data. :-) TTYL, DougF KG4LMZ - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
