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Is there a Pentax 645D lens to L mount adapter?

Started 3 months ago | Discussions thread
Scottelly
Scottelly Forum Pro • Posts: 18,026
Re: Is there a Pentax 645D lens to L mount adapter?

DMillier wrote:

That's useful to know, Scott, now that I have a set of manual focus Pentax 645 lenses. I'm currently using them on my A7Rii for tilt-shift and stitching. They are unbelievably cheap used.

With the Rhinocam Vertex rotary stitch adaptor I can shoot 100MP 46*46mm square frames which is fun.

In terms of image quality, the Pentax lenses are film era designs for the most part which means they don't have modern lens perfection at wide apertures but they are very good stopped down on medium format.

David I have considered trying one of those, but the size makes me think I won't be happy with them. I'd love to see a shot from a longer lens, like a 135mm or 150mm, stopped down a bit (i.e. at f5.6), and of course shot from a tripod, using something like self-timer mode, with a decent shutter speed, like 1/30 or 1/60 second or faster, at ISO 100. Ideally the photo would be of a scene that is focused in or near the corners as well as in the middle (i.e. a cityscape from high up, or the side of a building, with grass along the bottom edge of the photo, showing at least a little of the foreground a few feet closer to the camera from the side of the building, just in case there is some field curvature, though I suspect there would be very little with a longer focal length lens).

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Scott Barton Kennelly
https://www.bigprintphotos.com/

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