Corran
Well-known
Cruisin' eBay, I accidentally found this interesting lens:
What's interesting is that it is marked simply "JENA," and f=180 1:2.8, with a little "S" and a strange symbol. I immediately recognized it as a Zeiss "Olympia" Sonnar, and photos of similar lenses online confirm this...but it's not marked Zeiss anywhere. I'm aware of the Jena/Opton names and some of the WWII naming conventions with Zeiss, but isn't "Zeiss" still usually on the lens?
Anyway, I ended up making a little bid on it and won it for all of $54, with free shipping! I got it and with some sleuthing figured out it is an Exakta mount. Very small little mount, so I ended up taking an old Nikon body cap and drilling a hole through it, which friction fits over the Exakta mount/barrel and allows it to mount right up to my Nikons. Unfortunately it doesn't hit infinity - it only focuses out to about 30 feet, but then has a bit closer focusing instead.
Anyone know more about this lens? Furthermore, short of totally inventing a new rear section (the entire back half of the lens screws apart), is there an easy way to convert this to F-mount, keeping it somewhat original? Or should I just chop it and go since it cost me almost nothing!
I took it along on my old D700 Saturday, as I was shooting a good friend of mine's son's 5th birthday party. They had a water slide thing and so I grabbed a couple of candids. This guy is ridiculously sharp, even wide-open, with only a trace of spherical aberrations at the largest stop. It soundly beats the bigger and heavier Nikkor 18cm f/2.5 short-mount tele that was supposedly designed based on the Zeiss. I should shoot them out sometime - the Nikon is definitely not even in the same class. Here are a couple images from the Zeiss:
What's interesting is that it is marked simply "JENA," and f=180 1:2.8, with a little "S" and a strange symbol. I immediately recognized it as a Zeiss "Olympia" Sonnar, and photos of similar lenses online confirm this...but it's not marked Zeiss anywhere. I'm aware of the Jena/Opton names and some of the WWII naming conventions with Zeiss, but isn't "Zeiss" still usually on the lens?
Anyway, I ended up making a little bid on it and won it for all of $54, with free shipping! I got it and with some sleuthing figured out it is an Exakta mount. Very small little mount, so I ended up taking an old Nikon body cap and drilling a hole through it, which friction fits over the Exakta mount/barrel and allows it to mount right up to my Nikons. Unfortunately it doesn't hit infinity - it only focuses out to about 30 feet, but then has a bit closer focusing instead.
Anyone know more about this lens? Furthermore, short of totally inventing a new rear section (the entire back half of the lens screws apart), is there an easy way to convert this to F-mount, keeping it somewhat original? Or should I just chop it and go since it cost me almost nothing!
I took it along on my old D700 Saturday, as I was shooting a good friend of mine's son's 5th birthday party. They had a water slide thing and so I grabbed a couple of candids. This guy is ridiculously sharp, even wide-open, with only a trace of spherical aberrations at the largest stop. It soundly beats the bigger and heavier Nikkor 18cm f/2.5 short-mount tele that was supposedly designed based on the Zeiss. I should shoot them out sometime - the Nikon is definitely not even in the same class. Here are a couple images from the Zeiss: