Unknown to many, the Ernostar name is quite famous. Ludwig Bertele created the world's fastest still photography lens with a maximum aperture of f2, and used by the
Dr. Erich Solomon. Dr. Solomon captured some of the world's most engaging and unforgettable
photos, often without the subject knowing that he was photographing them.
Ernostar was derived from the equally famous Triplet design, and in turn, the Sonnar design was derived from Ernostar. The Canon EF 135mm f2L lens that I and many love, is a derivative of the Ernostar. With this history, I had high expectations when I tried out the Ernostar 110mm f1.9 projection lens.
B&L Cinephor 120mm f1.9 on the left, Zeiss Ikon Ernostar 110mm f1.9 on the right.
The Ernostar 110mm f1.9 has nice multi-coating.
This is a very large lens, similar to size and weight as the B&L Super Cinephor. It has very beautiful multi-coating, which is quite unusual for old projection lenses. However, the very short flange focal distance makes it hard to focus to infinity even on the Sony NEX-5N. I had to use a very short 12-17mm focus helicoid. In actual use, the lens performed better than the newer B&L 120mm f1.9. Purple fringing is surprisingly well controlled. It's almost as good as modern lenses.
Green -- NEX-5N & Zeiss Ikon Ernostar 110mm f1.9. Click for larger.
The lens is sharp with very good contrast. I would rate it excellent at its working aperture. If only I could stop it down a tiny bit, I am sure the sharpness will be even better. As is, it's completely usable but the thin depth of field makes it hard to focus. Again, the EVF helps a great deal here.
Bokeh -- NEX-5N & Zeiss Ikon Ernostar 110mm f1.9. Click for larger.
I promise this will be the last of the weird alt lenses that I will post with regularity. I know lately I have been overly enthusiastic on these kind of lenses, which I am sure very few people actually would use, or find it useful, but I enjoy making them usable and using them to take pictures.
Next time we will look at a couple of 55mm f1.4 lenses: Mamiya Sekor 55mm f1.4 and Auto Chinon 55mm f1.4 M42 mount lenses.