Tele- or not tele: Enna Tele-Ennalyt 90mm f/2.8

 



    Lens Version

    The lens can be divided into two different major versions:

    Version 1: Wide white bands and narrowly banded black bands on the aperture and focus ring. Serial Number <4,000,000.

    Version 2: Narrow black and white bands on the aperture and focus ring. It is also available in Enna "Sockel" mount. Serial Number >=4,000,000.


    Tele or not tele?

    For photography lenses, a telephoto lens has a focal length larger than the Total Track Length (TTL), where TTL is the distance from the surface of the sensor to the top of the lens. Enna adds “tele” before the name Ennalyt to indicate a telephoto lens. For example, Enna Tele-Ennalyt 90mm f/2.8(Ernostar design) is a telephoto lens while the Ennalyt 95mm f/2.8 & 100mm f/2.8(Triplet design) is a long-focus lens.

    Photo taken by Dr. Klaus D. Schmitt, remixed by Calvin


    Lens Specifications of the lens reviewed

    Lens mount: M42 (also available in Exakta mount)

    Focal length: 90mm

    Aperture adjustment: f/2.8–f/16 (no half-stop clicks)

    Number of aperture blades: 10

    Minimum focus distance: 0.7 meter

    Filter size: 52mm

    Weight: ~220g

    Aperture blades of Enna Tele-Ennalyt 90mm f/2.8


    Lens Sharpness

    At F2.8, this lens shows decent to good resolution at center with relatively low contrast. The sharpness improves at F4. The resolution at edges becomes OK at F5.6. 

    The performance of this lens on A7RII is different on A7: the center is still decently sharp at f/2.8 while the edges are still a bit fuzzy at f/5.6. The bokeh is more or less the same. 

    Enna Tele-Ennalyt 90mm F2.8 @f/2.8 on Sony A7RII

    100% crop of above


    Vignetting

    On a 36×24mm format sensor, there is only very minor vignetting in the corners which is unlikely to be observed during normal use.


    Flare Resistance

    The flare resistance is OK to for a vintage single coated lens. A hood is recommended when there is a strong light source.


    Chromatic Aberration

    Longitudinal CA / “Bokeh Fringing” is minor.


    Bokeh

    Typical Ernostar type Bokeh, bokeh is very smooth. Spherical aberration is well corrected, which indicates the front and rear bokeh is very similar.

    Enna Tele-Ennalyt 90mm F2.8 @f/2.8 on Sony A7RII

    Enna Tele-Ennalyt 90mm F2.8 @f/2.8 on Sony A7RII

    Price & Value

    This lens is pretty rare. I would expect it will cost around $100 to $150 USD for a good copy on eBay as of 2024. Prices may vary significantly.


    Summary

    This is a lens I would recommend over the Enna 85mm f/1.5 if one prefers a lightweight portrait lens due to its natural bokeh and medium contrast. The alternative from West Germany will be the Schacht Travenar 90mm f/2.8 which is also an excellent general-purpose lens.


    Sample photos







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