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Thanks David yes a couple things have changed on my box and need to check that. Thanks GuyGuy,
I've noticed that your shots are running cyan/blue and slightly desaturated. It may be time for a refresh on the monitor calibration. Just a friendly observation.
I took the liberty of doing a quick correction in PS. Before and after.
David
David, here is my take:If Jack wasn't able to discern much difference in a 3' x 4' print between 39 and 60 MP and we suspect that the lenses are limited in resolving this extra detail, ~~~ If the Leica S lenses can seriously outresolve the current competition and the sensor is in line (6um pixels) with what is coming out of the P65+, I'm expecting pretty phenomenal results in a smaller, faster, and fully weather-sealed package. Anyone else thinking the same?
Shoot me down if I'm wrong here, but for the 65+ to show a visible improvement over the 45+ (which it does), then either:6.8 micron sensors (P45+) will resolve 74 line pairs per mm; and 6 micron sensors (P65+ and S2) will resolve at most 83 line pairs per mm.
Here I will go on record stating it is *VERY* difficult to get more than even 60 line pairs of resolution into a real-world image
Cheers,
Yes, 2 is a sound conclusion, along with the other components of technique I mentionedShoot me down if I'm wrong here, but for the 65+ to show a visible improvement over the 45+ (which it does), then either:
1) Your focussing was better on the 65+ shot, or
2) Your lens is resolving considerably more than 74 lp/mm across the entire frame, in which case :bugeyes:
Why, then, do folks rave about the Rodenstock and Schneider "digital" LF lenses, if they're only guaranteed to 50 lp/mm across the image circle?Yes, 2 is a sound conclusion, along with the other components of technique I mentioned
Guy and I did the shooting and all modesty aside, we know proper technique... We used a known good lens for our system, the new AFD 80. We confirmed focus via the excellent electronic focus confirmation in the Phase/Mamiya AFD3 body for the shots -- we know it works from previous testing
If you look at the MTF charts, I think you'll find Rodenstock and Schneider *digital* lenses run more like 100 LP/mm across the 645 sensor at over 20% contrast, and the HR versions more like 120 line pairs. Most generic Rodenstock or Schneider *4x5* lenses will get you over 50 line pairs. Moreover, the area where the digital lenses excel relative to SLR glass is at the short end, and here most SLR lenses fall in performance pretty quickly relative to the normal and longer focal lengths.Why, then, do folks rave about the Rodenstock and Schneider "digital" LF lenses, if they're only guaranteed to 50 lp/mm across the image circle?
Seems like they're barking up the wrong tree