Erik Kaffehr

Thanks for your efforts explaining the workings of sampling theory! Best regards Erik

Hi, I ran it my much lesser Windows 11 computer and it stitched two 60 MP TIFFs. But, I guess we cannot depend on unsupported software. Best regards Erik

Hi, I have seome experience using the Canon 16-35/4L as shift lens on 24x36 mm. I wouldn't think it covers 33x44 mm at 16 mm but may cover nicely at longer focal lengths. The rear baffle can be ...

All MFD cameras except Leica S models use Sony sensors. Best regards Erik

The MTF curves tell a story. resolution here is limited by my print size 75x100 cm at 200 PPI, which corresponds to 47 MP. The GF 120/4 macro is sharper than Phase One lens used in the DPReview set ...

I made a mistake when processing the images, The GFX 100 image was at default sharpeing while the Phase One image used Adobe's *light sharpening' preset. Plotting the MTF of the processed image ...

There are a lot of claims about color accuracy: (1) Capture One yields accurate color with Phase One cameras. (2) Capture One achieves Delta ...

What is you maximum print size and what technology do you use? I have a few 70x100 cm prints, printed on Durst Lambda at 200 PPI and also have a pair of panos shoots printed at 3x9 and 3x12 feet. I ...

Hi, I was responding to Dave's comment on my P45+, and what I write is true. Best regards Erik

Thanks for your effort digging up Jim's original posting. Jim made the point that he was using excellent lenses on both systems. I mostly print at 16x23 (European A2 format). At that size, I ...

I would think that the Phase One P45+ is capable of excellent images, with an extreme tendency to aliasing being the major problem. But, the Sony system is far more flexible, so it gives me more ...

Is any of these images GFX? If so, which one? Does any of these images have the medium format look? Both images use Lumariver profiles and both are actual crops from images sized to 75z100 cm at ...

Yes,vignetting plays a role. I have seen it comapring my Voigtlander 35/2 APO Lanthar and Pentax 645 35/3.5. The Pentax has very little fall off, a very different look. You happen to have a link? ...

What I think was obvious in the original posting was that all cameras yielded good color and that color could be near identical when different cameras used color profiles generated the same way. Bu ...

Adobe STD to the left Adobe Color to the right. Best regards Erik

Thanks for the suggestion, Adobe Standard and Adobe Color seem to be very close. Best regards Erik

Hi, I tried adding the GFX 100, being aware that it was a pretty old image. I started out with Adobe Standard in Lightroom and accuracy was quite a bit worse than what I have observed before on ...

There are a few possible issues doing this comparison. One is that we don't know how well the DPReview Studio Scene images are made. Illumination may variate and different light sources may be used ...

In the original posting I compared conversions using different conversions and comparing with reference data. That comparison indicated that all involved cameras were able to yield good ...

Hi, Jim Kasson has done some excellent analysis of sensor responnses for based on spectral response data of some sensors. Those data are a bit dated, unfortunately and they are also less than ...