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| p.7 #14 · Canon 24-70mm f/2.8L II reviewed by Photozone |
but for many others it almost seemed like focal plane was warping way forward on the left
Very interesting. Thanks for posting.
This year I (re)bought the 17-40L and it does the exact same thing.
And so did my other copy of the 17-40L, which I had back in 2005-2006.
Of course I did decentering tests on both and they turned out fine.
Enjoy your new lens.
Seems like you have a normal/good copy after all.
I also might buy the mighty 24-70L II one day.
Right now I'm of the mindset that I don't want to carry bazooka lenses with me.
This is subject to change, of course .
That is exactly what it appears to be with mine... Like the plane on the right side bends in forward and not on the left. Cause with some images the right side is equally as sharp as the left. If it was decentered I would not think it would ever be as sharp or show signs of other flaws no? The CA, vignetting and all that is identical side to side top to bottom.
I wonder if it is just weird field curvature weirdness or something else.
Glad it is not just me experiencing this though!
As for the weird L vs R and DOF stuff, still not sure but it seems like it had some sort of field curvature that acts radically different from lenses such as 24 1.4 II, tamron 28-75, canon 50mm 1.4, etc. Very unusual.
It seems to love you to place the focus fairly deep back into the scene even at f/6.3, f/8 24mm or 50mm etc. otherwise right where you focused will be sharp but left for sure and possibly right too will be much OOF, i can focus on the same tree with a 50mm 1.4 at f/6.3 and it puts all that tree's leaves and all others sharp edge to edge, do same with the 24-70 II at 50mm only the leaves right near focus point are sharp the rest are all blurry and OOF, if I focus it just behind the tree then it seems to make it sharp edges and center. (BTW this has NOTHING to do with MFA or any of those sorts of issues at all).
I have one shot where i tried to do 24mm at f/3.5 and with the way I focused it it was 100% crisp to the deep upper left corner at f/3.5 which is impressive. The very odd DOF and field curvature may make it a lens that will take great care and some skill to deliver what you want though perhaps not being able to see easily just point and focus but having to search for proper extra deep depth to focus it at much more carefully than with most lenses even at f/8 and f/10 never mind when wider open You may be able to make it perform very well for a zoom but it might take complicated effort perhaps.
It seems to have extraordinary resistance to PF/LoCA even at f/2.8 I see absolutely zero.
Dark outside suddenly so there is only poor dim lighting inside say H1 it is but on a book case seems like it from certain distances it focuses a fairly flat plane though and even say 35mm f/3.2 looks maybe sharp corner to corner. But it does seem to have some weird FC and DOF vs focus distance placement things compared to most lens designs or maybe it's just some copies, not sure yet.