> > > > From: "Bob W" <[EMAIL PROTECTED]> > > Date: 2007/05/21 Mon PM 10:53:58 GMT > > To: "'Pentax-Discuss Mail List'" <[email protected]> > > Subject: RE: Need help with my homework again > > > > Hint: J H Lartigue > > > > > http://arts.guardian.co.uk/pictures/image/0,8543,-10404954434,00.html > > > > ...although the wheels aren't oblong. Don't know what kind of > > distortion would do that! > > > > -- > > Bob > > It's not distortion of the lens type, it's an effect of the > focal plane shutter working in slit mode. As the slit > crosses the frame, the wheel moves forward, giving the oval > shape. It's just fortuitous (or maybe a result of this photo > in particular) that the direction it leans is the one usually > depicted graphically to indicate speed.
I know. But it's still not oblong. I don't know any kind of photographic distortion that could square the circle. Bob -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
