To anti-alias or not anti-alias

boilerdoc2

boilerdoc2

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Does the R-D1 have an anti-aliasing filter? I presume it does but the files are so sharp that I wondered. With the M8 coming out without an AA filter (as does the DMR back), it seems someone else might have thought of this sooner than Leica.
And why do the current crop of DSLRs still use the AA filtes? Seems like it is a waste and sacrifices sharpness for the occasional (?rare) problem of moire.
Thanks, Steve
 
Yes it does - it uses the same sensor as the Nikon D100 and the Pentax 6Mp cams (a sony) - personally I feel that SOME AA is a good thing but I far prefer Weak ones such as in the Canon 1D MK1 (4Mp Pan CCD) Nikon D70 and D50 (same as D100 but with a weaker AA) . Moire is an issue with the three above weak AA cams but the pixel level sharpness in RAW is amazing..
The RD1 CCD`s AA (D100 remember) is a bit heavier but not way heavy - I`m wondering if there is anywhere who will interchange the AA from a D70 to the D100 / RD1 CCD ;-) .
 
Which files do you mean? RAW unedited, or JPG? In the Epson RAW file there is no sharpening applied AFAIK, but you can choose this option in the film settings for the JPG output or when converting the RAW.

Btw's the R-D1 shares the Nikon D70 sensor (which had some minor improvements over the D100) and uses another in-camera software than Nikon's - and that's where the sharpening happens.

Didier
 
D100 files are far nicer than D70 ones straight out of the camera. Nikon got moaned at for overly heavy AA on the D100, only to get moaned at when they weakened the AA filter on the D70 and moire really reared its ugly head. Anything with fine intersecting lines out of a D70 can look seriously horrible.

All based on my experience of using both cameras, your view may be different :)
 
Thanks for the info. Very interesting read. I'm sure there is some sharpening in-camera. The RAW files look very sharp to me. Once you post process and USM before printing it gets even better. Can't wait on the M8!
Steve
 
Just compared the RD1 RAWs to D50/70 ones in C1 and yup, it`s as pixel level detailed but without the artifacts .. Beautiful , What shocked me is that the CV 35 F2.5 Colour Skopar PC MK1 is as sharp wide open as my excellent copy of the Nikon 50 F1.4 is at F4 !! in the middle at least and that was compared in low light..

This is a beautiful camera, D50 RAW detail in a Jewel of a Rangefinder body :)
 
Converted by Nikon Editor 6.2, my NEF files look sharper than the ERF ones whatever converter i've used for the latter.
Worth a try if you still use your Nikon's IMO.
 
My 1D was a beast for moire when shooting fashion and fine testures were in fabrics. I had some instances that the anti moire software from C1 would not touch it. With my 1Ds I never had a problem and with my 1DsII I've only seen it once. Without the AA filter you're asking for artifacts around details like tree branches and certainly moire in textured and fine patterned fabrics. The 1D files were super sharp but for my use I like a mild AA filter. IMO I feel Canon has a good AA filter at the moment. With top quality L glass there's certainly no lack of sharpness.

I posted these in another thread but will again. The first frame is a full frame from the 1DsII and 85mm 1.2 at f8 iso 100 raw files processed in photoshop cs2 with default sharpening. The other two are 100% crops. Look at eye lashes and detail around the eyes. Many complain about the too strong AA filter in the canons but from my results I don't see this as a problem.
 
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