Originally posted by geehzer67 I've owned my Pentax 6x7 since 1973. I was fortunate though to have a father who was a professional photographer - commercial illustrator they used to call them. Navy-trained on big Fairchilds and Speed Graphics. He showed me how to hold an SLR-type camera to minimize shutter / mirror bounce. All of my field work with the 6x7 has been hand-held, some as low as 1/15 sec. While *I* might shake, I have never seen any evidence of the *bounce* so often alluded to in the popular press. I use a strap - over my shoulder - and a three-point support technique to hold the camera (my 35mms too). The left hand supports the lens and focuses, the right holds the body and fires the shutter, the strap is taut against my body and the camera, and my left elbow rests against my left rib cage. When everything's tight, squeeze the shutter. Ker-chunk! I offer this 6x7 image and enlargements from 1974 at Monte Cassino. Ektachrome, probably at around f/11, 1/125 sec., 150mm lens. Scanned at 4000dpi, gamma / color corrected, no sharpening or contrast enhancement, period. Please, show me the blur. You can count the beads on the rosaries.
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All well and good at an individual level, but it is the exception rather than the norm.
The best results in imaging with the Pentax 67 are achieved with refined technique of using
mirror lock-up followed by shutter tripping, and
the camera mounted on a tripod during this process.
Desertscape is correct in stating that a number of lenses are prone to showing the effects of inertial blur (mirror and shutter travel).
I find it incredulous another post has appeared here extolling the virtues of handholding the P67 at low shutter speeds when it is new users, especially, who are the most vocal (and easily deterred) at complaining about the effects of blur ruining their images with these big cameras — I deal with these people a lot:
"I read on the internet [insert groan and eyeroll here] where the camera can be handheld at 1/15 for super sharp pictures and —" Oh, bullshit.
Hence there is much to be gained when they skill up with tripod-based shooting so they understand how the effects of blur (however slight) and focus error can be virtually eliminated through considered technique. A number of my students have become firm devotees of tripod-mounted shooting with cameras such as the P67 (but also Hasselblads, Bronicas and Mamiyas), absolutely enthralled by the perfection achieved by learning a technique that guarantees sharp images for any enlargement size (not 6x4" postcards!). Tripod mounted shooting is also fully justified over any other technique if one is printing quite large, as I do (typically close to 1 metre across). You never saw a 4x5" camera being handheld at 25 seconds did you...?