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Archive 2011 · Followup to zeiss 25 review

Tariq Gibran
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p.2 #1 · p.2 #1 · Followup to zeiss 25 review

Rock Huffwell wrote:
That does look much better focused (note the canon appears to be sharper at f/2 than f/2.8

). I still would not be positive about perfect focus, but despite being wide open the zeiss does appear to perform better too.

It looks like the Canon focus was indeed all over the place for different F stops.

In your F2 Canon example, the focus actually looks to be on the brick building in the back this time as it actually looks sharper at that point than the Zeiss at either F2 or 2.8.

Nov 30, 2011 at 09:35 PM

Tariq Gibran
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p.2 #2 · p.2 #2 · Followup to zeiss 25 review

redisburning wrote:
I dont know why the Canon guys are getting so bent out of shape.

I don't think it's as much "Canon guys" around here as much as just trying to objectively see if the tests are valid or not.

Nov 30, 2011 at 09:38 PM

FlyPenFly
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p.2 #3 · p.2 #3 · Followup to zeiss 25 review

Tariq Gibran wrote:
In your F2 Canon example, the focus actually looks to be on the brick building in the back this time as it actually looks sharper at that point than the Zeiss at either F2 or 2.8.
Really? I think I see a lot more detail and contrast in the brick of the Zeiss F2 shot than the Canon f2 shot.

Nov 30, 2011 at 10:26 PM

Smiert Spionam
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p.2 #4 · p.2 #4 · Followup to zeiss 25 review

I'm not a "Canon guy." I'm mostly a "Nikon guy", though now that I'm using a Sony NEX for my lightweight camera, I keep an eye out for just about anything that performs well. I'm curious about the Zeiss for Nikon and NEX, and wanted to see how it was doing. The fact that the Canon was clearly misfocused made the comparison largely irrelevant.

Nov 30, 2011 at 10:31 PM

michaelwatkins
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p.2 #5 · p.2 #5 · Followup to zeiss 25 review

All I wanna know is WWRB?

(What Would Rock {Huffwell} Buy)

Nov 30, 2011 at 10:47 PM

Rock Huffwell
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p.2 #6 · p.2 #6 · Followup to zeiss 25 review

michaelwatkins wrote:
All I wanna know is WWRB?

(What Would Rock {Huffwell} Buy)

Rock Huffwell doesn't need his 24mm lenses to be fast, neither do 93% percent of photographers. If you're in the 7%, the Nikkor is clearly the best for now. I'm keeping my ZF 25/2.8 and spending my money on my many illegitimate children.

Nov 30, 2011 at 11:10 PM

Tariq Gibran
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p.2 #7 · p.2 #7 · Followup to zeiss 25 review

Rock Huffwell wrote:
I'm keeping my ZF 25/2.8 and spending my money on my many illegitimate children.

OH, so that's why you have that PayPal donation button all over your site!

Nov 30, 2011 at 11:18 PM

Rock Huffwell
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p.2 #8 · p.2 #8 · Followup to zeiss 25 review

Tariq Gibran wrote:
OH, so that's why you have that PayPal donation button all over your site!

Indeed, it's either that or get a real job. They keep multiplying.

Nov 30, 2011 at 11:36 PM

AhamB
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p.2 #9 · p.2 #9 · Followup to zeiss 25 review

Regarding the complaints about misfocus: it could also be varying field curvature between the lenses. There are no center crops so we can't see if the focus was actually different there.

Dec 01, 2011 at 01:00 AM

redisburning
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p.2 #10 · p.2 #10 · Followup to zeiss 25 review

AhamB wrote:
Regarding the complaints about misfocus: it could also be varying field curvature between the lenses. There are no center crops so we can't see if the focus was actually different there.

if there is field curvature you test by refocusing the lens so that the plane of focus will be where you are looking at for whatever aperture/distance.

look Im not trying to defend the method, just point out how much unnecessary butthurt there seems to be over a non-issue.

Dec 01, 2011 at 01:08 AM

Gunzorro
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p.2 #11 · p.2 #11 · Followup to zeiss 25 review

The f/2 comparison definitely looks better in focus, and more even match-up between the two lenses. If the CA and vignetting was corrected in LR3, I'd say the Canon is the clear winner at this f/stop -- it definitely has better contrast and detail. I'm not convinced of the focus on the shots -- all should be done with manual focus (AF off) in Live View to get the best accuracy (even there, it can be slightly iffy).

Both seem to be very good lenses with somewhat different characteristics and features, similar to the 100MP/100L comparisons.

Dec 01, 2011 at 01:12 AM

FlyPenFly
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p.2 #12 · p.2 #12 · Followup to zeiss 25 review

Ummm...

Are we all looking at the same pictures?

I don't see how anyone can say the Canon wins here at all at F2?

There is obviously more contrast and detail on the Zeiss shots.

Dec 01, 2011 at 01:33 AM

kosmoskatten
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p.2 #13 · p.2 #13 · Followup to zeiss 25 review

Gunzorro wrote:
The f/2 comparison definitely looks better in focus, and more even match-up between the two lenses. If the CA and vignetting was corrected in LR3, I'd say the Canon is the clear winner at this f/stop -- it definitely has better contrast and detail. I'm not convinced of the focus on the shots -- all should be done with manual focus (AF off) in Live View to get the best accuracy (even there, it can be slightly iffy).

Yes, but this is how you would focus either lens for critical use anyway. If you can't nail it then you need...Show more →

Dec 01, 2011 at 02:26 AM

akul
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p.2 #14 · p.2 #14 · Followup to zeiss 25 review

FlyPenFly wrote:
Really? I think I see a lot more detail and contrast in the brick of the Zeiss F2 shot than the Canon f2 shot.

I thought so first but this might be due to zeiss's micro contrast giving the impression of more detail? (Looking at the asphalt roofing and hedges on the side)

Oh, and JT, thank you so much for the effort for the review and added comparisons.

Dec 01, 2011 at 06:53 AM

Tariq Gibran
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p.2 #15 · p.2 #15 · Followup to zeiss 25 review

FlyPenFly wrote:
Ummm...

Are we all looking at the same pictures?

I don't see how anyone can say the Canon wins here at all at F2?

There is obviously more contrast and detail on the Zeiss shots.

http://www.jaegraphy.com/temp/zc1.jpg

Nope, we are not! Go back and check out the added crops at F2 for Canon and note this crop at F2 for the Canon and compare it to the Zeiss at F2 and F2.8:

Canon at F2:
http://www.gibranstudio.com/U4I1322706286.SEQ.jpeg

Dec 01, 2011 at 07:35 AM

FlyPenFly
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p.2 #16 · p.2 #16 · Followup to zeiss 25 review

So it seems then in this retest the Canon focus was on the middle building while the Zeiss focus was on the rear building.

Dec 01, 2011 at 09:29 AM

Tariq Gibran
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p.2 #17 · p.2 #17 · Followup to zeiss 25 review

FlyPenFly wrote:
So it seems then in this retest the Canon focus was on the middle building while the Zeiss focus was on the rear building.

Yes, unfortunately, the focus varies with the Canon quite a bit at different F-stops (quite dramatically from F2 to F 2.8 as this crop demonstrates) which really renders the comparison somewhat useless.

Dec 01, 2011 at 09:39 AM

Gunzorro
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p.2 #18 · p.2 #18 · Followup to zeiss 25 review

Fly -- I was referring to the combination of both edge areas in the f/2 comparison. The results are close on the right side with a slight advantage to Zeiss, but the top of the center building is better contrast and detail in Canon.

With lenses such as these with so much inherent spherical aberration, only one reading can be taken from specific areas, not the whole picture, or shoot at a smaller aperture to get the whole frame in focus. Even with f/5.6, special care must be taken to get the focusing right with LV.

My opinion of the composite of these shots: at wide apertures, the ZE seems better across the frame, but Canon is better in the center.

Tariq -- I agree that it would be great to see the Nikon added to a comprehensive comparison of these lenses!

Dec 01, 2011 at 10:03 AM

Jorge Torralba
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p.2 #19 · p.2 #19 · Followup to zeiss 25 review

No one has mentioned that the Canon shot at f2 had the advantage of being stopped down.

Anyway, I did what I could. Maybe one day when I get the Zeiss again (Feb for NIkon)

I will redo with better conditions and set up.

Dec 01, 2011 at 10:35 AM

Tariq Gibran
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p.2 #20 · p.2 #20 · Followup to zeiss 25 review

Jorge Torralba wrote:
No one has mentioned that the Canon shot at f2 had the advantage of being stopped down.

Anyway, I did what I could. Maybe one day when I get the Zeiss again (Feb for NIkon)

I will redo with better conditions and set up.

Thanks for the effort. These tests are not as simple as a lot of folks may think.

Many really fast lenses I have tested actually are out performed even one or two stops down as compared to slower lenses even wide open so if anything, the Canon performance at F2 is pretty decent. As I said in the other thread, it's a much easier task to design a slower F2 lens which performs really well wide open vs a 1.4 lens. Erwin Puts wrote about this phenomenon at length - the difficulty in designing really fast lenses - in a number of his Leica lens reviews. Thus, the "advantage" of the Canon 1.4 at F2 is not a foregone conclusion vs the Zeiss F2 design wide open. If anything, the opposite is more commonly the case with 1.4 designs.

Dec 01, 2011 at 11:08 AM

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