Canon 5d Mark II sharpness issues in photoshop

 Ira Block called this weekend to report on a sharpness issue with the Canon EOS 5D Mark II . He and his  assistant were comparing files shot on the 5D MK2 and the Canon EOS 1Ds Mark III , the MK 3 files appeared sharper viewed in photoshop. To quote his email:

Well we did some testing and it seems to be an adobe issue. The 5d Mk2 files
look sharper when using DPP or capture one . But somehow the algorithm in
adobe (photoshop) doesn't cut it. 

I did think that adobe got the raw update to photoshop cs4 out very quickly. I guess too quickly.Thanks Ira, I just wish you had told me before I upgraded photoshop...

-Stephen Alvarez

In a follow up email Ira says that the difference is most noticeable in low contrast images. Neutral Day has some higher contrast conversions here.

Comments

[Stephen Alvarez]

I haven't looked at this yet, but from Ira's comments it seems that this is an issue of how the photoshop cs4 plug in interprets the raw data not an issue with the raw file itself. You can still convert from RAW with Canon Digital Photo Professional or Capture One.
jpg images should be uneffected

[Alex]

Does this happen on just the jpegs or raw as well? I've heard reports of heavy NR on Jpegs on all ISO's, but is that on RAW's as well? Is this with photoshop CS4 only or does the processed raws/jpegs look the same in cs3 as well? Does converting the raws to DNG help or is there any difference?