This camera adds lens aperture automation to the Zenit-E. There are several other minor cosmetic changes but only this major change. At least 18 versions of Zenit-EM camera existing. The camera can be found marked Cosmorex with a Cosmogon lens and Kalimar also sold a version of this camera marked "Kalimar SR 300". Cambridge Camera also produced one of these with a Cambron plate [2].
Produced: 1972-1984 Name: „Зенит-EM“ Producer: KMZ Frame size: 24x36. Lens: Helios-44M  2/58. Shutter: 1/30s-1/500s + B. Quantity: 979.140 units.
	Sample of the earliest Zenit-EM camera (1972).
An earliest so far known version of particular camera. As you can see from the picture above, representing an earliest camera #72107115 (scanned from original manual guide), both cameras are visually identical. Black body with chromed top plate. "Зенит" markings in Cyrillic characters. Strap lugs on the top plate. The serial number is engraved on the right side (underneath the shutter advance lever), while later cameras have serial number on the left side already. The particular camera is fitted with authentic early Helios-44M lens #006373. Serial number engraved on the lens frontplate. Camera opposite from Ilya Stolyar (USA) coll.
	An earliest Zenit-EM  #73004930.
An early sample of export Zenit-EM. Strap lugs on the top plate. The serial number is engraved on the left side already. The particular camera is fitted with autentic early Helios-44M lens #040232. Serial number engraved on the lens frontplate.
	An early Zenit-EM (export)  #74030161.
Camera identical to Zenit-EM #73004930, but with serial number engraved on the left side already. My sample is fitted with late wide-angle Mir-1B lens.
	An early Zenit-EM  #74266002.
Very early and uncommon version of Zenit-EM camera under export markings "Revueflex-EM". Strap lugs on the top plate. The serial number is engraved on the left side. The particular camera is fitted with autentic early Helios-44M lens #041948. Serial number engraved on the lens frontplate.
	Zenit-EM  #74032996.
Very interesting version of Zenit-EM camera was found in United Kingdom market. The particular camera is identical to early type-2 cameras, but under export name "ZENITH-EM" and fitted with Auto Cosmogon lens. At least few samples of this version were found recently, so no doubts about theirs authentity indeed. In fact, it's certain Cosmorex-SE camera (see camera  #75001864), but with new labeling for UK market. Need to mention, what such labelings can be found on few other KMZ cameras from UK markets (see Zenit-3M, under export name "ZENITH-3" or Zenit-B, under export name "ZENITH-B").  Camera opposite from private collection in China.
	Uncommon version of Zenit-EM camera  #74023096.
Zenit-EM under export name "Cosmorex SE". Comes with Auto Cosmogon 2/58mm lens  #009712. Made especially for USA market and is quite hard to find nowadays in Europe [1].
	Under name Cosmorex-SE  #75001864.
Zenit-EM under export name "Revueflex-EM". Comes with standard Helios-44M lens. Made especially for Germany market (Foto-Quelle) [1].
	Under name Revueflex-EM  #75026204.
Zenit-EM under export name "Kalimar SR300". Comes with Helios-44M 2/58mm lens  #7768358 "Made in USSR". Made especially for USA market and can be found in many markings variations [1].
	Under name Kalimar SR300  #77103267.
Less common to find in Europe export version of Zenit-EM camera. Under export name "Diramic R-2". Intended for Canada market. No otherwise different from regular Zenit-EM cameras. Camera opposite from private collection in China.
	Diramic-R2  #77104782.
Early Olympic version of Zenit-EM camera. Can be found with both Chrome or Black top plate [1].
	Zenit-EM Olympic  #78020977.
The late Olympic version  of Zenit-EM camera. Can be found with both Chrome or Black top plate [1].
	Zenit-EM Olympic  #78143965.
Very uncommon to find in Europe Zenit-EM, under export name "DIRAMIC RF100". Can be found in Canada market. The particular camera comes with Olympic logo and is very close by number to EM #78143965 (see picture above). Camera opposite from private collection in China.
	Diramic RF-100  #78145769.
Very uncommon to find in Europe Zenit-EM, under export name "Cambron-EM". Can be found in US market. It's very interesting to mention, that particular camera comes with Olympic logo, though US national team have refused to participate in Moscow Olympic games (1980) due to political reasons. Camera opposite form private collection in China.
	Under name "Cambron-EM"  #79072929.
Zenit-EM under export name "Kalimar SR300". Identical to Zenit-EM #77103267, but totally black one. Made especially for USA market and can be found in many markings variations. Camera opposite is in new condition and comes with paper box, leatherette case with Kalimar markings and manual guide (passport).   Camera opposite from Ilya Stolyar (USA) coll.
	Under name Kalimar SR300  #80056163.
The regular version of Zenit-EM camera. Totally black body. Easy to find nowadays. Some of these cameras baering soviet Sign of Quality on the accessory shoe (see camera #80064147).
	Zenit-EM  #80064147.
The regular version of Zenit-EM camera. Black body with chromed top plate.  Easy to find nowadays [1].
	Zenit-EM  #82042057.