Hi
I took some sample shots to compare the old 24 with the new 24 yesterday, and would post them here, but for the fact that the hosts for the Northlight Images site have had DNS problems on and off since late Friday night (GMT), so I can't upload anything to the site... (or receive email)
So, my first comment would be that the new lens at f/8 shows virtually no CA, and even in the corners at full horizontal shift, it is barely noticeable. Contrast and vignetting seems improved slightly too. The CA on the old lens is very easy to fix in ACR or the likes, but even after this, there is a noticeable improvement in the new lens. Once shifted it's noticeably sharper all over the field.
I've seen the excellent DPR tests, but you just don't use this lens at that distance, so whilst they are useful, I'd be curious to see some tests at more realistic distances. No doubt once they start shipping a bit more, we'll see some of the real lens anoraks get to work
Given I've used the old lens without much problem for several years at modest amounts of shift, the new one makes it easier to use the full range of movements without so much concern as to whether I'm going to have bits of the image too soft.
In some ways it's a bit like moving from my 1Ds to 1Ds Mk3 - doesn't necessarily make my photos any better (to the average client), but extends the range of shots I can get without needing to worry about techy image quality issues
--
bye for now
Keith Cooper
PS Just to remind me about our dependence on technology, the office telephone system also died yesterday, so no ringing down to the kitchen for a cup of tea :-(