Steve says color issues on 12,15,21, and somewhat at 28mm. No real comparison samples, but supposedly he's going to test A7r vs A7 on the WA RF lenses for a head-to-head.
cputeq wrote:
Steve says color issues on 12,15,21, and somewhat at 28mm. No real comparison samples, but supposedly he's going to test A7r vs A7 on the WA RF lenses for a head-to-head.
He should have started with that test! That's what we are waiting for. Those Otus pics are nice but not very interesting.
elroos wrote:
He should have started with that test! That's what we are waiting for. Those Otus pics are nice but not very interesting.
Interesting to compare Huff with Dpreview with the horses. Huff actually has some attractive shots, while at DP those shots are beyond ugly. But DP did give us some longer shots where edges could be judged--on the native lenses
I hope cv 35/1.2v1 is as good as v2. I'd assume it is.
cputeq wrote:
Steve says color issues on 12,15,21, and somewhat at 28mm. No real comparison samples, but supposedly he's going to test A7r vs A7 on the WA RF lenses for a head-to-head.
Steve Huffs pictures are nice, but from our point of view we would need some shots at infinity with those wides and not some close ups with center in focus and the rest OOF anyhow. This way we don't have any new information.
slungu wrote:
Steve Huffs pictures are nice, but from our point of view we would need some shots at infinity with those wides and not some close ups with center in focus and the rest OOF anyhow. This way we don't have any new information.
I agree. Jeez. He is there. He has both cameras. He has a bunch of RF wides from Gandy. How hard is it to point them at something in the distance, focus, and post the results?
To be fair he did mention that he will do a comparison between the two cameras with RF lenses tomorrow. Remember that he's doing that for free, so we shouldn't be looking at the horse's teeth.
elroos wrote:
He should have started with that test! That's what we are waiting for. Those Otus pics are nice but not very interesting.
You know... He is not there to satisfy your needs...or mine ?
He is a Blogger and he will blog.
So let him do what he wants to ?
edwardkaraa wrote:
To be fair he did mention that he will do a comparison between the two cameras with RF lenses tomorrow. Remember that he's doing that for free, so we shouldn't be looking at the horse's teeth.
+1
And yes, I also want to see some shots at infinity from both cams with the same lenses and so on.
But I will not blame anyone if he does not shoot these pics for me ;-)
edwardkaraa wrote:
To be fair he did mention that he will do a comparison between the two cameras with RF lenses tomorrow. Remember that he's doing that for free, so we shouldn't be looking at the horse's teeth.
as opposed to who, digilloyd?
it's in his interest to get the scoop as well os ours, since his rep is based on his site and reviews. He did the same thing with the Nex-7 when he had it early.
The Otus is beside the point for his readers, but somebody loaned him one, I guess, and no doubt it's the best lens he's ever held.
I know he can do great comparisons, as he did in the old days with the 28 ultron and cron. Anyway, he's got a right to shoot what he wants and I've got a right to moan
If he does pull off a good comparison tomorrow, I'll give him well deserved credit. He has a cv 28/2 and the edge comparison between A7&A7r with that lens will be interesting---if we can get it.
And, as someone who lives in the west, where horses don't feed themselves, I can tell you: ignore the teeth at your peril.
edwardkaraa wrote:
To be fair he did mention that he will do a comparison between the two cameras with RF lenses tomorrow. Remember that he's doing that for free, so we shouldn't be looking at the horse's teeth.
After his boke-error when comparing the 50/1.0 leica and the CV 50/1.1 I'm skeptical..
Does anyone know how the Zeiss ZM 21 2.8 compares to a Zeiss G 21 2.8 on a NEX? The G 21 does smear in corners/edge and shows color cast too. But it is excellent in the majority of the frame. This on NEX 5N.
Wondering because of Steve Huffs comments on the ZM 21/2.8 on the A7, he seem to like it.
soarfm wrote:
Color issues easily dealt with in Capture One.
Edge smearing would be the deal killer.
I'm pretty sure he is only paying to magenta shift, and not corner sharpness/smearing. It's really unfortunate that he's stating the the a7 is clearly much superior to the a7r for RF wides, because I'm pretty sure that's not true if you are talking about final quality post processing. I will be very surprised if the a7r doesn't produce a sharper, cleaner image in the end, but we'll see...
This issue is a bit strange, because as far as I know, and please correct me if I'm wrong, corner smear and color shift are related, and are caused by the same phenomenon, being the oblique light rays being distorted by the sensor glass cover and spilling to neighboring sensels, causing both the smearing and the color shift. Offset micro lenses and thinner glass cover jointly work on correcting both issues. (I know smearing is associated more with the glass cover, while the corner shift more with the light spilling, but it's not clear cut). So why should the 7 perform better with RF lenses? And if it does, I would expect less smearing too.
edwardkaraa wrote:
This issue is a bit strange, because as far as I know, and please correct me if I'm wrong, corner smear and color shift are related, and are caused by the same phenomenon, being the oblique light rays being distorted by the sensor glass cover and spilling to neighboring sensels, causing both the smearing and the color shift. Offset micro lenses and thinner glass cover jointly work on correcting both issues. (I know smearing is associated more with the glass cover, while the corner shift more with the light spilling, but it's not clear cut). So why should the 7 perform better with RF lenses? And if it does, I would expect less smearing too....Show more →
I think it's two separate issues:
#1: The thickness of the glass cover introduces astigmatism and/or a curved field, which gives "smearing".
#2: Light hitting the microlenses "misses" the intended photosite and spreads over to the wrong places, which gives color casts towards the corners and borders.
Number two is not really an optical phenomenon, since it occurs behind the glass cover, while number one is distorting the properties of the optical system; the lens.
So, if this is true, it makes sense that the a7 gives less shift and the a7r gives less smearing.
#1: The thickness of the glass cover introduces astigmatism and/or a curved field, which gives "smearing".
#2: Light hitting the microlenses "misses" the intended photosite and spreads over to the wrong places, which gives color casts towards the corners and borders.
Number two is not really an optical phenomenon, since it occurs behind the glass cover, while number one is distorting the properties of the optical system; the lens.
So, if this is true, it makes sense that the a7 gives less shift and the a7r gives less smearing.
Ok, so the 7 having less color shift means that it has offset micro lenses, which is not true according to the current info.
As for the glass cover, the absence of the AA filter is probably a good indication that it will be thinner. So here the A7R should have a theoretical advantage if indeed the cover is thinner, but that is not confirmed either.
