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Forum: Lens Clubs 06-23-2018, 04:30 AM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
Amsterdam
K-1 Zeiss 25/2.8

Forum: Lens Clubs 03-29-2017, 01:18 AM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
This discussioin on FM forums convinced me to buy the 25/2.8 insteadof the 25/2 for my type of work and I don't regret it. if i would have been a portrait photographer I would have gone for the fast version. Fast is not always better!

sculptormic wrote:
This is what i red in photozone.
Anyway I am glad I canceled my buy on ebay of this lens and bought the Pentax-A 24/2.8 instead.

Verdict

As a German website we'd love to report that we've seen another great Zeiss lens (home, sweet home after all) but at the end of the day the proof is in the pudding (or maybe in the "Kraut" here) and it just doesn't taste all that good. The Zeiss Distagon T* 25mm f/2.8 ZF performed pretty good in our Nikon APS-C review but it didn't impress during our full format lab tests. The resolution capabilities are...Show more →

This an answer I got from Tariq Gibran. Very helpfull!

The issue with tests from Photozone is that they often have little relevance for lens performance at infinity. Photozone photographs test charts to generate their MTF's and these charts are photographed at relatively close distances. So, if a lens is designed to perform best at distance and does not have say a floating element design, it's going to test poorly on a close test chart while in actual use, it could be an outstanding performer at greater shooting distances. A much better MTF measurement to go by is the one that Zeiss actually publish for all of their lenses. The Zeiss MTF's are based on infinity for general purpose lenses. If you compare the Zeiss MTF charts, you will see that the Z*25/2.8 is better outside of the center than the 25/2 as the faster 25/2 MTF shows a major dive (greater than the 25/2.8) by the time the corners approach. What the 25/2 has going for it, beyond the extra stop, is a bit more resolution in the center. It also supposedly renders beautifully. So, if you wanted a great editorial lens for say environmental portraits, the 25/2 would be an exceptional choice but if you wanted a lens that delivered better across the frame performance at longer shooting distances, than the 25/2.8 is the better choice.

Btw, the field curvature of the slower Z* 25/2.8 is at it's worst at close distances but is negligible at distance. This seems to be the opposite as compared to the Z* 25/2 and why the slower lens is better for distance.

"The 25/2.8 Distagon is wonderful all-around lens with unique close-up properties, and outstanding performance at distance. It won’t test well on by-the-numbers lab testing at close range, so ignore such nonsense and try this lens for landscape or extreme close-up use and you’ll be delighted with its brilliance and color."

diglloyd.com: Mini Review: Zeiss ZF/ZE 25mm f/2.8 Distagon

"When one starts with the wrong premises (“shoot a resolution chart at close range and that’s the measure of lens“, one naturally finds that the Zeiss 25mm ƒ/2.8 Distagon is a mediocre lens at close range on a planar target. It is why I don’t shoot resolution charts anymore— garbage in (inappropriate premises)= garbage out."

diglloyd blog: Reader Likes The Zeiss 25mm ?/2.8 Distagon After Trying It

Lloyd got this one right.
Forum: Lens Clubs 01-27-2017, 02:03 AM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
Thanks Tas, that sunrise in Sydney shows a lot for me. Shows it would be a grear 50mm for me. I am in no hurry to buy one because I am very much a wide shooter at the moment. I will buy one if I see one for a good price.

25/2.8 Fort Everdingen

Forum: Lens Clubs 01-26-2017, 04:27 PM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
That second shot looks very good. Got that real Zeiss feel to it. Thanks!
Forum: Lens Clubs 01-26-2017, 04:13 AM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
Fenwoodian, my next Zeiss would be this one, but more so to use it @ 11 or 13 and occasionally for portraits. If ever you have a chance to post some architecture or nature at this aperture. Just to see :)

Glad to know the reconversion works well.
Forum: Lens Clubs 01-15-2017, 03:08 AM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
WWII relic, Ault.
Zeiss Distagon 25/2.8

Forum: Lens Clubs 01-13-2017, 04:13 PM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
Thanks for your insights on lens conversions and lens impressions, Fenwoodian! Much appreciated! You make me curious on your book!
Forum: Lens Clubs 01-11-2017, 01:24 PM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
Snowworld

Pentax A 100/2.8





Inside
Zeiss 25/2.8

Forum: Lens Clubs 01-10-2017, 08:40 AM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
Ault
Zeiss 25/2.8

Forum: Lens Clubs 01-08-2017, 02:52 PM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
Forum: Lens Clubs 01-08-2017, 02:19 PM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
Thank you Fenwoodian!
That first image in New york was taken with the Contax Zeiss 35/1.4. A great lens but only possible to convert by Leitax in M42 mount to use it on the K-1.
I don't know if i want to do that.
Forum: Lens Clubs 01-08-2017, 02:28 AM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
Fenwoodian, I can confirm that this lens is excellent on the K-1.
It also has been underrated because of some tests in the past which never dissapear from the net.
This is the perfect lens for what I do with my favourite FOV. Even prefer it above the 31 Limited.
I used to love the 25/2.8 Biogon on my GXR and now I have something comparble back. The conversion was very easy.

Zeiss 25/2.8

Forum: Lens Clubs 12-26-2016, 03:23 PM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
Zeiss ZF 25/2.8
Perfect lens for me on the K-1





Forum: Lens Clubs 11-24-2016, 05:19 AM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
Thanks, I still have a A7r to use them on although they are mostly on the shelf at the moment but I don't want to sell them.
I sort of have everything I need for the K-1, so it is not so urgent for me to convert them. I still have a Leitax PK mount for a Zeiss 25/2.8 ZF laying around because I was planning to buy that lens.
Well I see, I will probably send the 35-70 to David and may be the 100-300 later.
I do have a Tamron 70-200 that does a real good job on the K-1.
Forum: Lens Clubs 11-23-2016, 07:36 AM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
Hello Remco. i too have a lot of Contax lenses, also the 100-300 and 35-70. Actually I almost have the whole range except the 21, 25 and 28/2. This far I did not Leitax any of them.
Did you leitax the 35-70 yourself? I suppose you live in Amsterdam as well?
Forum: Lens Clubs 06-11-2016, 02:54 PM  
Carl Zeiss T* ZK mounts (Distagon, Planar, Makro-Planar)
Posted By sculptormic
Replies: 1,381
Views: 197,474
Hi, I have a few Leica lenses myself and I am thinking about converting them to the K mount. What stops me is the black tubes inside the lenses. Did you gluw them back in? If not, are there any problems with inner reflections?

Thanks!
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