denoir wrote:
Well, since the second set isn't part of the overall test, I can tell you that the F:ZC, G:CZ, H:ZC combo that three people have guessed now is not correct.
What?
Then maybe all mine from above are opposite cuz that's what I get too. Using the same criteria as I wrote above I get F:ZC, G:CZ, H:ZC for these "extras".
I actually think most of the characteristics of the D1 appear more Zeiss-like, but I dont recall the starlight patterns being so spread out with Zeiss blades, so against my better judgment Ill have to go with
D1 Canon
D2 Zeiss
E1 Canon
E2 - Zeiss
Feb 18, 2011 at 07:41 PM
Steve Spencer Offline • • • • • • • Upload & Sell: On
A - 1C; 2Z on this one the sharpness on the branches in the snow on the right and the more neutral colours suggested the zeiss in number 2
B - 1Z; 2C on this one the better contrast in number 1 suggested the zeiss
C - 1C; 2Z on this one it was the colours that to me suggested the zeiss in number 2
D - 1C; 2Z this one was a gimme; the star points in the streetlights indicate a 9 blade aperture (i.e., the zeiss) in number 2 and an 8 blade aperture (i.e., many canons) in number 1
E - 1C; 2Z on this one the better contrast and colours suggest that number 2 is the zeiss
the macros I judged on the bokeh and went with what I perceived to be a smoother bokeh for the zeiss as it is one stop down so
F - 1Z; 2C
G - 1C; 2Z
H - 1C; 2Z
A1: Canon
A2: Zeiss
B1: Zeiss
B2: Canon
I have absolutely no idea about C, if I had to guess I would say:
C1: Zeiss
C2: Canon
D1: Zeiss
D2: Canon
E1: Zeiss
E2: Canon
I am trying not to get distracted by other comments, so I am taking the test first and then enjoy other people's response. Hope you have not posted answers yet. My eyes are irritated a bit, hope I saw what I saw.
A1: C A2: Z
B1: C B2: Z
C1: C C2: Z
D1: Z D2:C
E1: Z E2: C
Frak there are more test ? Okay, hopefully I am not making my score worse, ah, right this is not part of the test. Ooo my eyes hurts.
F1: C F2:Z
G1: C G2:Z
H1: Z H2:C
B was hard with the strong distortion difference? Or just the size difference, whatever it was, I got fixated on it. Anyway, as I know nothing about canon, I picked ones I liked as Zeiss. If I am wrong on all, may be I shall consider switching to canon
Most of the above is pretty self-explanatory, except perhaps for balance. Balance is a sum of the scores but with a miss being valued as -1. So a random result would yeild a balance of 0 while inverted results (thinking all Canons are Zeiss for instance) would give -1 and getting all right would give 1.
So the final result for Set 1 is 88% correct identifications. Pair B was apparently the most easy to classify (92% correct) while pair E (83% correct) was the most difficult. The results for the optional set 2 basically show that the guesses were random.
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OK, a quick walkthrough on how to identify A-E. The images are just crops of the same images that were posted.
Actually, the second set was a lot easier to tell apart with the given information. Since the Zeiss is stopped down to f/2.8 and the Canon is wide open, the latter has visibly more vignetting every time when flipping back and forth through the images in seperate tabs. I felt that was "cheating" though and otherwise it isn't easy to tell for sure, so I didn't participate there.
dcjs wrote:
Actually, the second set was a lot easier to tell apart with the given information. Since the Zeiss is stopped down to f/2.8 and the Canon is wide open, the latter has visibly more vignetting every time when flipping back and forth through the images in seperate tabs. I felt that was "cheating" though and otherwise it isn't easy to tell for sure, so I didn't participate there.
Yeah, I know. I had difficulty deciding if I should apply lens corrections in Lightroom to get rid of the vignetting on the Canon but decided against it in the end in order to keep the processing equal. As it turns out a couple of people chose wrong based on the vignetting - based on their experience with the 100 MP @ f/2 and forgetting that the vignetting is severely reduced by f/2.8.
Hah, I noticed now that I had guessed A correctly but I wrote it down on a small piece of paper and when I typed in the answers I switched it with the answer for C. I know... excuses, but I know that in reality I had only one wrong guess.
I was really on the fence about the last one of the 2nd series (H). I saw that H1 has more vignetting, but in the end I chose to label it Zeiss because I thought the warmer color balance was present in the other Zeiss shots as well.
Thanks denier. I too recorded one wrong. I knew that on #1 was the zeiss based on the star points in the lights, but had opened it in the number 2 tab. Oh, well it is clear that as a group we did pretty well even if I didn't do quite so well.
Amazing experiment - Stretched the brain! What it shows me is that photographers can detect a Zeiss photo over 80% of the time! That is really something when you stop to think about it.
Secondly, while I throughly enjoyed the task (thanks for spending the time to put it together), almost none of these pictures would I have taken with a Zeiss lens - for the most part they were fairly monochrome - the advantage of Zeiss is the color rendition - my Zeiss goes on when color starts to splash! Zeiss is color! While other lens may approach (or at times exceed) Zeiss optically, no other lens can produce the vibrance, rendition, or saturation - ie 3-D effect or "pop" that Zeiss does. Now reproduce this test, with lots of color and I think the percentage of correctness will zoom.
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