highwave: It looks so good on the black OM-D
Both looks and spec wise, it's more fittingly the kit lens for the OM-D than the 12-50mm ever will be
E = MCsquared?
topstuff: All very lovely, but this is'nt really an F2.8 lens is it, compared to APSC or FF?
What would be the equivalent APSC lens? A 17-50 I guess? And if my understanding is correct, would this 4/3 lens have to be a F1.4 to have the same light gathering as a F2.8 in larger sensors?
As said somewhere below, I don't think it is a simple as simply doubling the focal length to get a "FF equivalent" and keeping the max aperture the same.
I am not sure if this really a f2.8 as we know it. I am sure the people at DPR can clarify !
A lovely thing though I am sure, especially with an OMD EM5.
Of course the exposures will be identical. But the poster is still correct that four times the total light (not light per area) will be collected on an FF sensor in the larger image circle.
Of course that's what gives the better noise characteristics of the FF: total light.
So what needs to be disentangled are three things:
Depth of field: function of aperture, distance from subject, angle of view of lens and used image circle.
Total light: (and hence noise level): function of aperture, and used image circle (holding light levels and length of exposure fixed)
Exposure: function of aperture (holding light levels and length of exposure fixed).
Much of the discussion of these matters conflates the three.
ZAnton: There is already Samyang 14mm f/2.8 for almost 1/10 the price.Only real crazy techno-geeks will buy Zeiss.
Yes: which tells you something about Ken Rockwell!The Samyang is cheap; yes. It has wild but correctible distortion, yes. But it's sharper than the N 14-24 or canon 14 2.8. Less CA. Better flare control than the N. It's not just me: read photozone or Lenstip.
lucavascon: Aaaahhh... Zeiss!It looks quite a deal if compared to 2nd hand 15mm f3.5 in Contax mount!!!However I do prefer old Contax mount primes adapted to 5D. And new ones still have better taste than Nikon and Canon primes (specially Canon primes, that are disappointing me so much).For those who do not appreciate the difference between the Zeiss and other lenses, if you don't see it, it means your way, taste, and preferred light condition in taking pictures is not putting your lens in crisis. No "absolute"better in lenses and tools There is simply a tool that "fits better" in your hand for that situation
@ZAnton, I tried the Samyang 14, quite unusable for me. Far prefer using the good 15mm fisheye Sigma and than correct it with PanoTools
@thx1138, you got the point. I do not like zooms, I usually prefer zeiss and do not use filters (although sometimes, I'd like a polarizing one). But I've tried that 14-24 and I can only say that it is a fantastic, German-feeling ultrawide, I'd go for it.
What problem do you have with the Samyang? It has crazy distortion, but one of the good things about it's distortion pattern is that when you correct it with a LR profile you don't lose much angle of view. And it has extremely high resolution.
Oh well. I haven't downloaded and normalized the D800 RAW pics yet, but based on how they look (only slightly worse than the 5dIII at 1:1) I'm guessing it'll come out the same or slightly better normalised. And all those nice pixels. Still, I don't regret my 5D III: it's handily better than the II (2/3 stop in RAW? That's really pretty useful = especially if it cleans up better which is my experience so far) and it would take me three years to get as proficient with the Nikon interface, by which time who knows who'll have the nicest sensor? And I do love my 17mm TSE....
Um, they don't seem to be up yet....
ET2: "Sometimes reviews get delayed."
No kidding. The preview (forget the review) of Nex-7 was promised back 3 months ago?
The first S90 I got was just frighteningly decentred; the whole right side was smeared and the right hand corners were just a blur. I sent it back to Adorama (I think) and got another that was still noticeably decentred - soft in lower right at all apertures, but not so much that it was too much of a pain in normal shooting.