Well a guess that comes from a different background because many years ago, I spent a great deal of time at the controls of an airplane. First is the prop is likely to be totally stopped with a shutter speed of about 1/125th of a second or so regardless. Props just don't turn that fast and turn even slower in cruise. Second most airplanes have on strobe lights even during the day to help other airplanes see and avoid them. And three I am guessing this picture was taken on semi rough day though I am not sure. If the pitch or yaw of the airplane were being corrected at the time the shutter was pressed, it might account for that type of issue. --- On Wed, 9/24/08, ADavidhazy <andpph@xxxxxxx> wrote: > From: ADavidhazy <andpph@xxxxxxx> > Subject: Image artifact solution sought > To: "List for Photo/Imaging Educators - Professionals - Students" <photoforum@xxxxxxxxxxxxxxxxxx> > Date: Wednesday, September 24, 2008, 2:24 PM > Hi, > > I was given a sample of some photographs taken of the > propeller > of an airplane made with, I believe, a phone camera. There > is an > obvious anomaly present. Although I suspect the reason I am > not > really sure (really I do not know!) how this came about. If > you > can shed some light on the effect for me it would be much > appreciated. > > See the images here: > > http://people.rit.edu/andpph/a-misc/phonecamera-prop-effect-1.jpg > > Thank you for taking the time to give me a hand! > > cheers, > andy
