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Huh? What's a distance ring?Is it possible to add a distance ring to a R-mount lens?
According to the published mtf charts the Zeiss 100 Planar is flat field but data are only shown for infinity focus. I'm not sure this would hold at close focusing distances as the lens was not designed with macro use in mind. Conversely, according to the published data the 120 Makro-Planar is flat field at close focusing distances but not at infinity focus.Narrowed it down to two options:
The SK Apo-Digitar 100mm an the Zeiss Planar CF 100mm.
If I am right, these are both flat field lenses, so they’re both good for flat art-photography. At f11 they should be equal regarding sharpness from corner to corner. If I buy the Arca R lensplate for the V system they both work on my Factum with 15mm shift. With both I can go closer with extension boxes or rings.
Also the price is similar with the adapters, maybe the Hasselblad is turning out a little higher than the SK with conversion.
Just the Hasselblad seems a little bit more flexible because it can be used with the x-to-V Adapter as a regular lens on the 907x.
Is the image quality the same? Which one would you prefer and why?
Have to find the right question for my decision...
Thanks
Mario
Thanks John.According to the published mtf charts the Zeiss 100 Planar is flat field but data are only shown for infinity focus. I'm not sure this would hold at close focusing distances as the lens was not designed with macro use in mind. Conversely, according to the published data the 120 Makro-Planar is flat field at close focusing distances but not at infinity focus.
What are the dimensions of the pieces you intend to photograph? FWIW, according to the spec sheet for the 100 CFi Planar (which is optically identical to the CF 100 Planar), the 120 Makro-Planar is recommended for pieces < 1 square meter.
John
Emailed you.Hmm. I guess the admins removed my post, which provided extensive technical information on the questions posted to this thread.
My understanding was I was still welcome to participate on this forum, so long as I didn't link to any of our products or services, and my recollection is I did not.
Disregard. I had confused this post (where I did not reply) with the same post made on Luminous (where I did reply). Apologies.Hmm. I guess the admins removed my post, which provided extensive technical information on the questions posted to this thread.
My understanding was I was still welcome to participate on this forum, so long as I didn't link to any of our products or services, and my recollection is I did not.
I have it: it's a lovely, sharp performer. But I've not tested it for performance in anything like a repro setup. It's minimum native focus is 0.7m, so the highest native magnification is around 1:5.6 ... a subject field of 186 x 248 mm, approximately. (A US Letter-sized sheet of paper is 216 x 279 mm approximately.)Just got an offer for a XCD 90mm lens...
Any thoughts about this lens for repro-stuff?