Focal length 135mm, Max. aperture f/2.8 Min. aperture f/22. Have 10 blades. Min. Focus is 1.5 m.
Optical design is like on Sonnar.
Lens aperture ring is located in front of the focusing ring on the back. This causes problems during use. Namely - after focusing you want to adjust the aperture ring at the same time you move the focus ring and lose focus. It's very irritating.
The lens is very uneven in giving their work. It is very demanding in terms of light photographed object. You need to devote a lot of attention to get good results. But you get the results are worth it. Portrait lens - this is the best work for him. Made very solid. work with it gives a good impression not counting the previously described drawbacks. Can wonderful paint it colors.
I think it is worth it to be in the collection, and spend some time.
Advantages - perfectly suited for outdoors. Disadvantages - soft – from at f/8 going sharper, very prone to flare.
The design of the focus ring and aperture ring is a big disappointment.
Build quality: ★★★★★
Excellent quality. German perfection.
Market value / value of subjective: ★★★☆☆
Less than $150 is a sure price.
Sample from ENNA München Tele-Ennalyt 1:2.8 / 135mm made on Sony A37