Home · Register · Software · Software · Join Upload & Sell

Moderated by: Fred Miranda
Username   Password

  New fredmiranda.com Mobile Site
  New Feature: SMS Notification alert
  New Feature: Buy & Sell Watchlist
  

FM Forums | Alternative Gear & Lenses | Join Upload & Sell

1      
2
       3       4       5       end
  

Archive 2011 · Leica 28 v ZF25 ?
  
 
mcbroomf
Offline
• • • •
Upload & Sell: Off
p.2 #1 · p.2 #1 · Leica 28 v ZF25 ?


John, if you like lenses in this FL consider the 28mm Scheider Super Angulon shift lens. I just bought a copy and I may well keep it and part with my Leica.

Mike



May 06, 2011 at 09:33 PM
carstenw
Offline
• • • • • •
Upload & Sell: Off
p.2 #2 · p.2 #2 · Leica 28 v ZF25 ?


The Super Angulon is not meant to be critically sharp in the corners until f/8. Have you tested it yet?


May 06, 2011 at 09:36 PM
JohnJ
Offline
• • • •
Upload & Sell: Off
p.2 #3 · p.2 #3 · Leica 28 v ZF25 ?


johnahill wrote:
...
I'm just trying to rationalise this and figure out if it's worth having the money invested in the R28 over the ZF considering it's about twice the cost.


If it were only ever about value then I think we'd all just be using cheap OM lenses. But it's never just about value is it?

Thanks for the comparison. I've been looking for a nice 24 and always wondered if the Zeiss 25 was good enough as the Contax 25 that I used many years ago wasn't (IMHO)!

JJ


Edited on May 06, 2011 at 10:06 PM · View previous versions



May 06, 2011 at 09:46 PM
johnahill
Offline
• • • •
Upload & Sell: On
p.2 #4 · p.2 #4 · Leica 28 v ZF25 ?


carstenw wrote:
Before deciding, you should also go out and shoot what you normally shoot, and make sure that you like the look of the lens you keep.


I've had a few shoots with the R28 but that was before the CLA, one trip done with the ZF and pretty happy with it.

I need to get out and get some real world shoots done with the R28 since it's CLA and now that I have the Novoflex which seems the best so far.

The reason I started these tests was that the Leica has a reputation to live up to. It's known as possibly the best 28mm SLR lens and most folks who have used it rate it as sharp corner to corner wide open.

My initial tests on a flat target showed some fall-off in the corners until f5.6.
I was just trying to quantify the the premium of the R28 and whether it lives up to its reputation.



May 06, 2011 at 09:49 PM
Ataboy
Offline
• • •
Upload & Sell: Off
p.2 #5 · p.2 #5 · Leica 28 v ZF25 ?


Well, you are comparing some of the best lenses available so it's no surprise they both look great. However, I can clearly see better microcontrast with Leica - just look at how crisp small leaves and the bark details are on the last pair of pictures, compared to relatively mushy look from Zeiss.


May 06, 2011 at 10:25 PM
mcbroomf
Offline
• • • •
Upload & Sell: Off
p.2 #6 · p.2 #6 · Leica 28 v ZF25 ?


carstenw wrote:
The Super Angulon is not meant to be critically sharp in the corners until f/8. Have you tested it yet?

It's been on a few outings but when I shoot WO it's for selective focusing so the edges and corners are usually OOF. I'll take a few test shots this weekend.

Mike



May 07, 2011 at 08:11 AM
s23chang
Offline
• • •
Upload & Sell: Off
p.2 #7 · p.2 #7 · Leica 28 v ZF25 ?


well... if you don't plan to shoot at 2.8 to 4, ZF25 does its job from 5.6 and up.
Other than that, I can't tell you how you should invest in your gear.
Personally I shoot at wide open a lot for fixed focal length lens. Otherwise, the zoom lens would do just fine when stop down.



May 07, 2011 at 10:38 AM
mcbroomf
Offline
• • • •
Upload & Sell: Off
p.2 #8 · p.2 #8 · Leica 28 v ZF25 ?


But I do as I said above. Moreover the SA is a shift lens which the ZF is not.

Mike

Edit, I guess you were responding to John...



May 07, 2011 at 11:34 AM
Tariq Gibran
Offline
• • • • • •
Upload & Sell: On
p.2 #9 · p.2 #9 · Leica 28 v ZF25 ?


I would go with whichever focal length you like shooting with the most. Though it's only a seemingly small 3mm, that can be quite a lot in a regards to angle of view with wide angles.


May 07, 2011 at 12:29 PM
j.liam
Offline
• • • •
Upload & Sell: Off
p.2 #10 · p.2 #10 · Leica 28 v ZF25 ?


Isn't the ZF25 really 25.7mm? Assuming the Leica is in fact 28.0 mm, that doesn't result in a remarkably different FOV.


May 07, 2011 at 12:56 PM
 

Search in Used Dept. 



Tariq Gibran
Offline
• • • • • •
Upload & Sell: On
p.2 #11 · p.2 #11 · Leica 28 v ZF25 ?


j.liam wrote:
Isn't the ZF25 really 25.7mm? Assuming the Leica is in fact 28.0 mm, that doesn't result in a remarkably different FOV.


Leica lists the 28 as 28.5mm with fov of 75, 65, 46 degrees (diagonal, horizontal, vertical).

Where did you get the 25.7 spec for the Zeiss? If so, that's very interesting. On their spec sheet for the ZF2, they list it as 25mm with fov of 80, 70, 50 degrees respectively. Perhaps Zeiss is not showing the actual focal length?
Anyway, for some, they will be plenty close to interchange, for others, not close enough. I always mentally interchanged the Zeiss 25mm with the 24mm focal length but if it is indeed closer to 26mm, that's relevant since a 24mm lens often will have a diagonal fov of 84 degrees (and a difference from 84 to 75 degrees is fairly noticeable on the wide end).



May 07, 2011 at 01:22 PM
Specularist
Offline
• •
Upload & Sell: Off
p.2 #12 · p.2 #12 · Leica 28 v ZF25 ?


s23chang wrote:
well... if you don't plan to shoot at 2.8 to 4, ZF25 does its job from 5.6 and up.


I own the ZF Distagon 25 mm, and I would argue that for use at infinity it performs very well at large apertures. Quite possibly better than the Elmarit-R 28 mm, and certainly better than many other prime lenses I've used. Unlike the ZF Distagon 28 mm, for example, it retains fine detail right into the extreme corners at f/2.8.

The Distagon 25 mm has two main weaknesses as I use it: strong astigmatism and overall curvature of field at close focus distances (hard to avoid in a unit-focusing retrofocus lens); and moderately strong lateral chromatic aberration that limits its performance at smaller apertures.

Nice lens nevertheless, with excellent resistance to flare.



May 07, 2011 at 01:37 PM
Lars Johnsson
Offline
• • • • • • •
Upload & Sell: Off
p.2 #13 · p.2 #13 · Leica 28 v ZF25 ?


Tariq Gibran wrote:
Leica lists the 28 as 28.5mm with fov of 75, 65, 46 degrees (diagonal, horizontal, vertical).

Where did you get the 25.7 spec for the Zeiss? If so, that's very interesting. On their spec sheet for the ZF2, they list it as 25mm with fov of 80, 70, 50 degrees respectively. Perhaps Zeiss is not showing the actual focal length?
Anyway, for some, they will be plenty close to interchange, for others, not close enough. I always mentally interchanged the Zeiss 25mm with the 24mm focal length but if it is indeed closer to 26mm, that's relevant since a 24mm lens
...Show more

Lloyd Chambers write that the lens is 25,7 in his review



May 07, 2011 at 01:52 PM
j.liam
Offline
• • • •
Upload & Sell: Off
p.2 #14 · p.2 #14 · Leica 28 v ZF25 ?


Tariq Gibran wrote:
Leica lists the 28 as 28.5mm with fov of 75, 65, 46 degrees (diagonal, horizontal, vertical).

Where did you get the 25.7 spec for the Zeiss? If so, that's very interesting. On their spec sheet for the ZF2, they list it as 25mm with fov of 80, 70, 50 degrees respectively. Perhaps Zeiss is not showing the actual focal length?
Anyway, for some, they will be plenty close to interchange, for others, not close enough. I always mentally interchanged the Zeiss 25mm with the 24mm focal length but if it is indeed closer to 26mm, that's relevant since a 24mm lens
...Show more

If you have a subscription to Lloyd Chambers' guide to Zeiss lenses, it's right up there in the first paragraph:

http://diglloyd.com/prem/prot/ZF/publish/25Distagon.html

In his review, the "cheat", as he calls it, is one of the reason he cites why someone might forego the 25 for the 28 because of its less extreme FC up close and the extra stop in comparison.


Edited on May 07, 2011 at 02:03 PM · View previous versions



May 07, 2011 at 01:57 PM
Tariq Gibran
Offline
• • • • • •
Upload & Sell: On
p.2 #15 · p.2 #15 · Leica 28 v ZF25 ?


j.liam wrote:
If you have a subscription to Lloyd Chambers' guide to Zeiss lenses, it's right up there in the first paragraph:

http://diglloyd.com/prem/prot/ZF/publish/25Distagon.html

25.7mm. In his review, it's one of the reason he cites why someone might forego the 25 for the 28 because of its extreme FC up close and the extra stop.


Interesting. Curious that Zeiss would not state the actual focal length on their spec sheet like Leica does.



May 07, 2011 at 02:02 PM
AhamB
Offline
• • • • •
Upload & Sell: Off
p.2 #16 · p.2 #16 · Leica 28 v ZF25 ?


@Tariq: The ZF25 PDF says 25.7mm, 80.2/80 degree angles.

One small advantage for the the ZF is that it has 9 aperture blades, which gives nice 18-pointed diffraction stars when shooting with the sun in the frame, or night shots with lights in them. The Leica will produce boring 6-pointed stars. When doing close-ups the Leica will also produce hexagons/lines in the bokeh when shot at anything other than wide open.



May 07, 2011 at 02:07 PM
Tariq Gibran
Offline
• • • • • •
Upload & Sell: On
p.2 #17 · p.2 #17 · Leica 28 v ZF25 ?


AhamB wrote:
@Tariq: The ZF25 PDF says 25.7mm, 80.2/80 degree angles.

One small advantage for the the ZF is that it has 9 aperture blades, which gives nice 18-pointed diffraction stars when shooting with the sun in the frame, or night shots with lights in them. The Leica will produce boring 6-pointed stars. When doing close-ups the Leica will also produce hexagons/lines in the bokeh when shot at anything other than wide open.


So, the ZF differs from the ZF.2, at least regarding stated specifications.

http://lenses.zeiss.com/photo/en_DE/products/slr/distagont2825.usage.html



May 07, 2011 at 02:27 PM
j.liam
Offline
• • • •
Upload & Sell: Off
p.2 #18 · p.2 #18 · Leica 28 v ZF25 ?


No, Lloyd's review of the ZF 25 dates from 2007. The ZF and ZF.2 are optically identical.


May 07, 2011 at 02:33 PM
Specularist
Offline
• •
Upload & Sell: Off
p.2 #19 · p.2 #19 · Leica 28 v ZF25 ?


Tariq Gibran wrote:
So, the ZF differs from the ZF.2, at least regarding stated specifications.

http://lenses.zeiss.com/photo/en_DE/products/slr/distagont2825.usage.html


According to that site, the 21 mm has a focal length of 18 mm and weighs 470 g!

Zeiss' websites and marketing materials have been truly terrible for years. More often than not they make mistakes. They obviously don't think this affects their brand and sales, and hey, maybe it doesn't!

Leica, on the other hand, are admirably accurate and comprehensive in everything they publish. One must conclude these companies are run very differently.



May 07, 2011 at 03:31 PM
AhamB
Offline
• • • • •
Upload & Sell: Off
p.2 #20 · p.2 #20 · Leica 28 v ZF25 ?


That new section of the website just isn't accurate and the numbers have been "massaged" to look more logical to lay persons. On top of that, the specs for the 21/2.8 show the ones for the 18/3.5.

The true technical specifactions should be correct in the data sheets that are available here: http://lenses.zeiss.com/photo/en_DE/service/download_center/current_data_sheets/current_data_sheets_slr.html



May 07, 2011 at 03:34 PM
1      
2
       3       4       5       end






FM Forums | Alternative Gear & Lenses | Join Upload & Sell

1      
2
       3       4       5       end
    
 

You are not logged in. Login or Register

Username   Password    Reset password