Originally posted by zobeleye Hi Rick,
thanks for the lecture...
just my 50% :
I have owned the Hartblei and used it on the 645Z and good riddance.
I have worked with 4x5, 6x7 and 8x10 view camera for years and good riddance, too.
Knowing that tilt does not increase the DOF per se, but tilts the POF and therefore can extend the perceived DOF from foreground to background, I'd still like for somebody to answer my question, if the movement of the sensor in the K1 can achieve that effect and to which degree, like for instance with a 45(-85)mm, since that is the widest FL lens with an aperturering, that I still own. As I understand it 28-45 and new 35 are out of the race for this.
cheers
Stephan
Sorry, didn't mean to lecture. Hard to guess other people's experience.
Those Hartblei 45mm lenses are really just Arsat 45mm lenses in a nicer Hartblei barrel and with nicer Hartblei coatings. But your observations are spot on: Sharpish in the center, but field curvature makes it hard to get sharpness in the corners at any aperture. It works out if there is foreground to work with. And on a small sensor, the worst of the corner problems would never be visible. But it also means greater enlargement ratios, which is not what that lens can easily tolerate. I have made good photos with mine on 6x6, but I would never want to crop and enlarge too much. The 67 45mm lens is really vastly better.
The Arsat 55/4.5 PCS lens is another matter altogether. I don't know to what extent the enlargements from a small sensor would be tolerable, but it's completely competent lens. The wide image circle means more reflection off the adapter, though. I used flocking material adhered to the inside of the adapter to control that problem. You mentioned that, too.
Have you considered the previous FA 35? Not terribly expensive. It suffers from field curvature, too, but not in the middle where you'll be using it. When it's sharp, though, it's sharp. I can't imagine, however, that it would be better than a cheap native small-format 35mm prime lens on K1.
I'm hoping others will have experimented more, too, to get better answers than what I'm providing. It sounds as though you and I have been mostly down the same road.
Rick "who still hosts the Kiev Report, not that much is happening there these days" Denney