Seem like someone told me that the TV electron gun operates at 60 cycles per second. Not at all sure this is right, but it MAY make a one way sweep of the screen every 1/60 of a sec. Someone else claimed the gun made a complete picture every 1/30 of a sec. That COULD mean one two way sweep. IOW, I don't know either. HD and Plasma notwithstanding.
Jack --- William Robb <[EMAIL PROTECTED]> wrote: > > ----- Original Message ----- > From: "Jack Davis" > Subject: Digital Shutter Speed Tester > > > >I freely check the accuracy of shutter speeds with my own tester. It > > has caused me to send bodies to Pentax for repair a couple times. > > Obviously, I must remove the lens and open the back to allow the > test > > beam access to the shutter. How could a DSLR shutter be tested? > > I used to know how to test shutter speeds using a picture taken of a > television screen, but I forget how. Something about counting the > distance > between scan lines or some such. > Perhaps this will remind someone of how to do it. > > William Robb > > > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
