Yup. It's one feature that (I think) has employed a consistent user interface across many Pentax models. Just push the button. What the user does with the information is a whole other issue!
t On 12/28/01 9:43 AM, Shel Belinkoff wrote: > OK, I see what you're getting at - an explanation of DOF as opposed to > how the DOF preview actually works on the camera. So, all you do is > press the button. Phew - with all the recent threads here recently > about needing manuals for lenses and people trying to figure out how one > feature or function or another worked, I thought that using the DOF > preview might have been more complicated. > > Timothy Sherburne wrote: >> >> Hello all... >> >> David, welcome to the list. Shel, although the manual does cover this >> feature, it's a little cryptic. The theory and application aren't really >> covered in the manual, and the text has probably gone through a >> Japanese-to-English translation anyway. >> >> David, I'm sure I'll mangle the explanation, but others will come to your >> rescue to straighten things out. >> >> Basically, your DOF preview button stops the lens aperture down to whatever >> aperture will be used when the shutter is released. This is useful when you >> need to determine how much depth your image will have when the picture is >> taken, and how much light will be striking the film. >> >> In order to give you the brightest viewfinder image, the camera holds the >> lens aperture at its widest until the shutter is released, then >> automagically stops the lens down just before the shutter is lifted. The >> camera does this at all times, including Program (P) and Shutter Priority >> (Tv) modes, and when you select the aperture (Aperture Priority mode, Av) on >> the lens. - 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 .
