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Leitz and Leica Camera Compendium (a work in progress)
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Some of the Leica cameras: Leica M4 with 21 mm Super-Anuglon-M f/3.4 and 50mm Summicron-M f/2.0, a Minolta Flashmeter IV (used for measuring light manually), Leica R8 with motor drive and 35-70mm Vario-Elmar-R f/4.0 and the Leicaflex SLmot with 80mm Summilux-R f/1.4 and the 35mm Elmarit-R f/2.8 and 90mm Summicron-R f/2.0. Finally the Leica Minilux with buitd in silent winder and 40mm Summicron f/2.8 autofocus lens.
     
       

 

             
Leica Camera Compendium

Courtesy of Justin Scott, Australia.
Additional R data courtesy of Douglas Herr of WildlightPhoto.com

If you are looking for the Leica Compendium by Erwin Puts, please wisit his website for more info, or try search eBay for his books (usually sold out from the publisher rather fast, so they become collectors items).
You may download a free PDF version of the 2002-version of Erwin Puts: "Leica M Lenses Their Soul and Secrets" from overgaard.dk or Leica Camera

Code No. Housing / Gehäuse
Int.
Fin.
Weight
Lightmeter
AF
Pcs. produced
Info

 

Leica rangefinder with fixed lens

Rangefinder-like cameras with fastened lens / Befestigte Linse  [serial numbers vs. production years may be found here]

 

Leica I prototype
1923
1923
31
100-130
LEICA Leica I Anastigmat
1925
1925
870
131-1000
LEICA Leica I Elmax
1925
1925
LENEU Leica I   < 10,000
1926
1927
LECUR Leica I Compur (dial)
1926
1929
601
5700-6300
LEICA Leica I Elmar close-focus
1926
1936
LENEU Leica I   > 10,000
1927
1936
LECUR Leica I Compur (ring)
1928
1941
LENEU Leica I Luxus
1929
1931
LENEU Leica I Kalb Leder
1929
1931
Leica Minilux (chrome) black leather
1996
2006
x
40mm f/2.4 ASPH
Leica Minilux Zoom (chrome)
1996
2006
x
35-70mm f/3.5-6.5 ASPH
Leica Minilux (chrome) snake skin
2005
x
40mm f/2.4 ASPH
18 009 Leica Minilux (black)
1996
1996
x
40mm f/2.4 ASPH
  Leica CM (chrome)
2005
2007
x
40mm f/2.4 ASPH
  Leica CM Zoom (chrome)
2005
2007
x
35-70mm f/3.5-6.5 ASPH

 

Leica screw-mount rangefinder cameras

Rangefinder cameras with Screw mount lens / Schraubgewinde   [serial numbers vs. production years may be found here]

 

LENEU Leica (non-standard)
1930
1931
LENEU Leica (standard mount)
1931
1933
LYCAN Leica II (nickel early)
1932
1948
ALVOO Leica Standard (black)
1932
1950
LOOMY Leica 250FF
1933
1934
AFOOV Leica III (black / chrome)
1933
1939
LOOMY Leica 250GG
1934
1943
AGNOO Leica IIIa
1935
1948
ATOOH Leica IIIb
1938
1941
LOOHW Leica IIIc < 400,000
1940
1945
LOOTP Leica IIId
1940
1947
LOOHW Leica IIIc (e) > 400,000
1946
1951
LOOSE Leica IIc (e)
1948
1951
OEGIO Leica Ic   (e)
1949
1952
LOOHN Leica IIIf
1950
1952
OEFGO Leica If      1/500
1952
1952
LOOHN Leica IIIf
1952
1953
LUOON Leica IIf     1/500
1952
1954
OEFGO Leica If      1/1000
1952
1957
LUOON Leica IIf     1/1000
1954
1956
LOOHN Leica IIIf     D/A
1954
1957
GOOEF Leica IIIg
1957
1960
OCEGO Leica Ig
1957
1963

 

Leica M rangefinder with M bayonet

Leica M Rangefinder cameras with Bajonet   [serial numbers vs. production years may be found here and here]

Advertisment:
IGEMO Leica M3 < 700,600
1954
1954
IGEMO Leica M3
1954
1967
IMOOP Leica MP chrome
1956
1957
IMOOP Leica MP black
1957
1957
  Leica MP Betriebsk black paint
1957
1957
25 - 50
KOOHE Leica M2
1957
1968
KOOCT 10125 Leica M1
1959
1964
10101 Leica MD
1963
1966
10400 Leica M4
1967
1975
Leica M4 MOT
1967
1975
10103 Leica MDa
1967
1976
10835 Leica M2R
1969
1970
10501 Leica M5
1971
1975
10700 Leica CL
1973
1976
10105 Leica MD-2
1977
1987
10410 Leica M4-2
1978
1980
Link: PDF maual
Leica M4-P
1981
1987
Leica M6
1984
1999
x
Leica M6J Limited edition with 50mm Elmar-M f/2.8 Collapsible
1640 pcs. produced
Design exterior as Leica M3, interior as Leica M6.
Anniversary edition to celebrate the 80th Anniversary of Leica, the 40th anniversary of Leica M and the 10th anniversary of Leica M.
1994
1994
x
1640 pcs
See LFI 4/94 for article
Leica M6 TTL
1998
2003
x
10 503 Leica M7 silver chrome
2002
-
x

Link: Brochure
Link: PDF maual

10 504 Leica M7 black
2002
-
x
Link: Brochure
Link: PDF maual
  Leica M7 Chrome Hermès Limited Edition
with Rapidwinder and chrome 35mm/1.4

100 pcs. Orange leather made
100 pcs. Etoupe (brown)
2009
2009
x
2 x 100
  Leica M7 á la carte (tailor made)
2006
-
x
Link: Brochure
Link: PDF maual
10 301 Leica MP (II) silver chrome
2003
-
x
Link: Brochure
Link: PDF maual
10 302 Leica MP (II) black
2003
-
x
Link: Brochure
Link: PDF maual
10 302 Leica MP (II) á la carte (tailor made)
2003
-
x
Link: Brochure
Link: PDF maual
  Leica M-A stainless steel
"Leica M Edition 100" (ltd 100 sets)
2014
-
x
Leica M-A Type 127 Black
Film rangefinder
Film camera without lightmeter
Kodak Tri-X 400 included
Announced at Photokina 2014
2014
-
x
Link: Brochure
Link: PDF maual
Leica M-A Type 127 Chrome
Film rangefinder
Film camera without lightmeter
Kodak Tri-X 400 included
Announced at Photokina 2014
2014
-
x
Link: Brochure
Link: PDF maual

 

Leica underwater camras

Underwater Leica M camera (ELCAN)

 

 

ELCAN Leica UW underwater housing with fixed Elcan-M 28mm f/2.8 lens, for use with Leica M bajonet cameras

 

1965
1965
10

 

Leica digital rangefinder cameras with M mount

Digital Leica M cameras with interchangable Bajonet lenses  (same bajonet as Leica M cameras above)

 

Leica M8 silver or black red dot
2006
2009
10 MP
x
Leica M8u
(M8 a la carte update to M8.2:
New silent shutter / Sapphire glass on display / Bright line frames changed to 2 meter  accuracy instead of 0,7 meter).
("S"napshot mode, auto-ISO and SDHC-support are in a free firmware release).
2008
-
10 MP
x
  Leica M8.2
silver red dot or
black paint black dot
2008
2009
10 MP
x
Link: Brochure
Link: Manual
  Leica M9
Released September 9, 2009
Metal-gray paint red dot  or
black paint red dot. Comes with a full Lightroom licence.
2009
2013
18 MP
x
Article
Link: Brochure
Link: Manual
  Leica M9 Titanium limited edition
Presented at Photokina 2010.
Set with 35mm Summilux-M ASPH f/1.4 titanium lens, limited edition book, leather straps and lens shade.  Design by Walter de'Silva. (Price for the set in Nov. 2010: 22,000 Euro, all delivered Dec 2010]. Comes with a full Lightroom licence.
2010
2010
18 MP
x
500
  Leica M9-P Hammer Tone Leica Ginza Anniversary Limited Edition
Released June 21, 2011 in Tokyo, Japan to celebrate the 5th year anniversary of the Leica Store Tokyo Ginza
Hammertone in MP-style (no red dot). As Leica M9-P below. With 28mm Elmarit-M ASPH f/2.8 set lens and hammertone lens shade. Sold out in few days. Comes with a full Lightroom licence.
2011
2011
18 MP
x
200
  Leica M9-Professional
Released June 21, 2011 in Paris.
Silver or black in MP-style (no red dot). As Leica M9 but with sapphire glass on display and classic Leica engraving on top plate. Comes with a full Lightroom licence.
2011
2012
18 MP
x
  Leica M9-Professional upgrade
(Leica M9 update to Leica M9-P:
New top plate without red dot but with classic Leica engraving on top plate / New bottom plate / Sapphire glass on display.
2011
-
18 MP
x
  Leica M9-P White Limited Edition Ginza
Celebrating the Leica Store Ginza Tokyo anniverary in March 2012 100 limited edition white Leica M9-P were made, with a Leica 50mm Noctilux-M ASPH f/.095 silver.
2012
2012
18 MP
x
 

Leica M9-P Hermes Limited Edition Jean-Louis Dumas with three lenses; 50mm Noctilux, 50mm Summilux and 28mm Summicron. Also with a limited edition Hermes Camera Bag.
Lens design by Peter Karbe, lens and camera body re-design by Walter de'Silva.
Price for the set at the release date May 10, 2012 - delivery July 2012- was € 40,000 / $ 50,000 for the set.

This is a redesign of the lens barrel texture, in anodized silver and with Hermes orange numbers. Body re-design in silver chrome finish with Veau Swift burnt tan calfskin leather.

Another 300 sets Leica M9-P Hermes Limited Edition with the Leica 50mm Summilux-M ASPH Hermes Limited Edition was released as well, price € 20,000 / 25,000$.

2012
2012
18 MP
x
100 pcs.
 

Leica M9-P Hermes Limited Edition with 50mm Summilux.
As the above edition.
Price € 20,000 / 25,000$.

2012
2012
18 MP
x
300 pcs.
  Leica M Monochrom "Henri" black
Released May 10, 2012 in Berlin
(delivery from August 2012).
Leica M9-P based body with new black and white (monochrom) sensor. Base ISO 320 with ISO settings from (pull 160) to 10,000 ISO.
Shoots DNG but with possibility of shooting JPG at the same time (can be set to Normal b&w JPG, sepia, cold or selenium toning.
In many ways like the Leica M9-p but without the snapshot mode.
Delivered with free Adobe Lightroom 4 and Silver Efex Pro 2 software.
2012
-
18 MP
x
  Leica M Monochrom "Henri"
Black with red dot
Released 2014 as limited run with the red dot logo on front of the camera.
Price approx 10% more than the black Leica M Monochrom without logo (the one that ws released in 2012).
2014
2014-
18 MP
x
  Leica M Monochrom "Henri" silver
Released May 2014
A few silver versions had been custom made previously as a la carte versions for customers.
2014
-
18 MP
x
  Leica M-E
"Type 220" dark grey
Announced at Photokina in September 2012 as the new entry level camera, delivery started the day after.
Leica M9 based body with new dark grey paint body. Exactly as the Leica M9, but without the USB port and the frame selector, introduced with a price tag the same as the Leica M8.2
Delivered with free Adobe Lightroom 4.
2012
-
18 MP
x
10 770   Leica M
"Type 240" black
Announced at Photokina in September 2012, delivery started on March 2, 2013
2013
-
24 MP
x
Article
Brochure
Manual
10 771   Leica M
"Type 240" silver
Announced at Photokina in September 2012, delivery started on March 2, 2013
2013
-
24 MP
x
Article
Brochure
Manual
    Leica M
"Type 240" stainless steel
Limited edition along with a Leica M-A film camera and three Summilux lenses 28mm, 35mm, 50mm), all in stainless steel.
Announced at the opening of the new Leica Campus in Wetzlar in May, 2014.
2014
-
24 MP
x
101
Article
Brochure
Manual
    Leica M-P
"Type 240" black
Delivery started in August, 2014
2014
-
24 MP
x
2GB buffer
Article
Brochure
Manual
    Leica M-P digital rangefinder
"Type 240" silver
Delivery started in August, 2014
2014
-
24 MP
x
2GB buffer
Article
Brochure
Manual
    Leica M-P upgrade
The Leica M 240 can be upgraded to the Leica M-P 240 as far goes the screen and the look, but not as far as the 2GB buffer and frame selector goes.
2014
-

  Leica M Edition 60 digital rangefinder
Announced at Photokina in September 2014. Basic filmlike version of the Leica M 240 digital rangefinder without screen and video. Celebrates the 60th year anniversary from the introduction of the Leica M3 in 1954.
2014
-
24 MP
x
2GB buffer
 

 

Leica medium format cameras dSLR

Leica S digital cameras (Studio)

 

  Leica S1 digital scanner camera for Leica M and Leica R lenses, as well as other bayonets; scanned one of the three RGB main colors at the time, connected directly to a Mac with SilverFast software. Three versions (Pro, Alpha and Highspeed)
1996
2000
75 MP
146
  Leica S2 digital medium-format digital camera for Leica S lenses and (via adapter) R lenses, Hasselblad lenses and more.
Equipped with both focal plane shutter (FPS) central shutter (CS) in one camera. Comes with a full Lightroom licence.
2009
2013
37.5 MP
 

Leica S Type 006 (2012)
digital medium-format digital camera for The updated Leica S, now without the S2 or S3 but simply S.
Takes L eica S lenses and (via adapter) R lenses. Equipped with both focal plane shutter (FPS) central shutter (CS) in one camera. Comes with a full Lightroom licence.

2012
2014
37.5 MP
 

Leica S-E Type 006 (2014)
The Leica S from 2012 re-launched in updated design at Photokina 2014 as the lower price entry-model model (with a large firmware update just prior to speed up the camera).
Comes with a full Lightroom licence.

2014
-
37.5 MP
2 GB buffer
 

Leica S Type 007
CMOS sensor and the Leica Maestro II image processor, 2 GB buffer and video.
With built-in GPS and WiFi (WLAN).
Available Summer 2015.
Comes with a full Lightroom licence.
Extras: Leica S-Adapter H for Hasselblad H lenses and the Leica S-Adapter C for Contax 645, Leica R to S adapter.

2015
-
37.5 MP
2 GB buffer

 

Leica SLR cameras with R mount

Leica R cameras SLR (Single Lens Reflex) [serial numbers vs. production years may be found here and here]

 

10002 Leicaflex (I) silver chrome (battery on all time; has a 'pie-shaped' counter on top.
1964
1968
x
10002 Leicaflex (II) silver chrome (battery on only when rewind arm is outv; has a round counter on top.
1964
1968
x
10002 Leicaflex black Enamnel (type I and II)
1964
1968
x
200
10011 Leicaflex SL silver chrome
(most common color)
1968
1974
x
Link: PDF maual
10011 Leicaflex SL black enamel
1968
1974
x
Link: PDF maual
10011 Leicaflex SL black chrome
1968
1974
x
Link: PDF maual
10013 Leicaflex SL MOT silver chrome
(for use with the Leicaflex  motor)
1972
1974
x
Link: PDF maual
10013 Leicaflex SL MOT black enamel or black chrome (for use with the Leicaflex  motor)
1972
1974
x
862
Link: PDF maual
10022 Leicaflex SL2 silver chrome
1974
1976
x
Link: PDF maual
10022 Leicaflex SL2 black (most common color)
1974
1976
x
Link: PDF maual
10023 Leicaflex SL2 MOT black
(for use with the Leicaflex  motor)
1975
1976
x
Link: PDF maual
10031 Leica R3 Electronic (black chrome)
1976
1979
780 g
x
10031 Leica R3 Electronic (silver chrome)
1976
1979
780 g
x
  Leica R3 Electronic Safari (olive-green)
1976
1979
780 g
x
5,000
  Leica R3 MOT (black)
1978
1979
780 g
x
  Leica R3 MOT (aztec special edition)
1979
1979
780 g
x
100
  Leica R3 MOT (gold special edition)
1979
1979
780 g
x
1,000
10041 Leica R4 black (arliest editions were named  R4 mot; but all R4 models were prepared for motor winder and motor drive)
1980
1986
630 g
x
  Leica R4 gold finish
1980
1986
x
1,000
Leica R4s black (R4 'light')
1983
1985
630 g
x
Leica R4sP black
(aka Leica R4s Model 2 or R4s MOD 2)
1985
1988
620 g
x
10 061 Leica R5 silver chrome
1986
1992
625 g
x
10 061 Leica R5 black
1986
1992
625 g
x
Leica R6 silver chrome
1988
1992
625 g
x
Leica R6 black
1988
1992
625 g
x
Leica R-E black (R5 'light')
1990
1994
625 g
x
10 068 Leica R7 silver chrome
1991
1996
670 g
x
10 068 Leica R7 black
1991
1996
670 g
x
Leica R6.2 silver chrome
1992
2002
625 g
x
Leica R6.2 black
1992
2002
625 g
x
Leica R8 silver chrome
1996
2002
890 g
x
Leica R8 black
1996
2002
890 g
x
Leica R9 silver chrome
2002
2009
790 g
x

Link: Brochure
Link: PDF maual

Leica R9 black
2002
2009
790 g
x

Link: Brochure
Link: PDF maual

 

Digital Leica dSLR cameras with R mount

Digital Leica R cameras dSLR (digital Single Lens Reflex) with R bajonet

 

14 439 Leica Digital Module R (DMR) digital back for Leica R8 & Leica R9
2005
2007
10 MP
5,000
Leica R10 dSLR for AF-R lenses and R lenses was planned and announced in 2008. But in July of 2009 Leica Camera AG announced that they wouldn't proceed with the development as their research had shown it wouldn't be feasible - or that if they build it, it would be so expensive few would want to buy one.
At the same time Leica Camera AG promised "some solution" for Leica R glasses in the future, which at Photokina 2012 became the Leica M that takes Leica R lenses and can be fitted with a electronic vievfinder to help focus the R lenses.
-
-
(24 MP)
Leica R(etreat) dSLR for R lenses
2010
(21 MP)
x

 

Digital Leica dSLR cameras with 4:3 mount

Digital Leica D cameras dSLR (digial Single Lens Reflex) with Four Third Bajonet

 

Leica Digilux 3 
(also fit R lenses via 3/4 - R adapter)
2006
2009
7.5 MP
x

4/3 system lenses and R Bajonet via adapter.
Link: PDF brochure

 

Small Leica digital cameras

Leica Digital cameras with fastened lens / Befestigte Linse

Leica Digilux
2000
1.5 MP
x
Leica Digilux 1
2000
2005
4 MP
x
Link: PDF maual
Leica Digilux 2
2003
2006
5 MP
x
28-90mm f/2.0
ASPH
Leica V-Lux 1
2006
2010
10.1 MP
x
28-400mm
Link: Brochure
Link: PDF maual
Leica V-Lux 2 with HD video
2010
-
14.1 MP
x
25-600mm
Leica V-Lux 20 with HD video and GPS
2010
-
12.1 MP
x
25-300mm
Leica C-Lux 1
2006
2007
6.4 MP
x
Leica C-Lux 2 in white or black
2007
2010
7.2 MP
x
Link: Brochure
Link: PDF maual
Leica C-Lux 3 in white or black
2010
2012
10.1 MP
x
25-125mm
f/2.8 - f/5.9
Link: Brochure
Link: PDF maual
Leica D-Lux
2003
2005
3.2 MP
x
Leica D-Lux 2
2005
2007
8.4 MP
x
Leica D-Lux 3 black
2007
2008
10 MP
x
Link: PDF brochure
Link: PDF maual
Leica D-Lux 4 black
(Also available in ltd. editions titanium or Safari green with green Billingham bag)
2008
2010
10 MP
x

Leica D-Lux 5
incl. Full Lightroom licence

2010
2012
12 MP
x 24-90 mm ASPH
f/2.0 - f/3.3

 

D-Lux 5 Techincal Data

Leica D-Lux 5 Titanium
Limited edition with halfcase and cover and camera strap in grey leather.

2011
2012
12 MP
x 24-90 mm ASPH
f/2.0 - f/3.3

Website

D-Lux 5 Techincal Data

Leica D-Lux 6 incl. Full Lightroom licence
The new D-Lux 6 features a f/1.4 zoom lens as well as video. Also, the aperture can be adjusted on a aperture ting on the lens (instead of in the camera menu).
1.7" CMOS image sensor.
EVF (electronic viewfinder as acessory)
2012
2014
12 MP
x 24-90 mm ASPH
f/1.4 - f/2.3

Website

D-Lux 6 Techincal Data

Leica D-Lux
Announced at Photokina 2014
2014
-
x  


Leica X1 chrome or black
Incl. Full Lightroom licence
2010
2012
12 MP
x
35mm f/2.8 ASPH

Leica X2 silver or black
Incl. Full Lightroom licence

Also available as Leica X a la carte editons where you can design your own colors.

2012
-
12 MP
x
35mm f/2.8 ASPH

Article
Link: PDF brochure
Link: PDF manual

Leica X a la carte

Leica X2 Edition Paul Smith
Incl. Full Lightroom licence

Limited edition designed by Paul Smith, in a collectors box with grey camera strap and matching grey half-case for the camera.

Limited edition 1500 pcs.

2012
-
12 MP
x
35mm f/2.8 ASPH

 

Leitz and Leica Family Tree as of 2003

From Ur-Leica to Leica R8 and M7 illustrated. Link: PDF poster

 

 

Leica Family Tree at leica.overgaard.dk

 

 

             

 

More Leica camera litterature

 

       

If you are looking for the Leica Compendium (2012 print edition and 2014 digital edition) by Erwin Puts, please wisit his website for more info, or try search eBay for his books (usually sold out from the publisher rather fast, so they become collectors items).

       
             
Erwin Puts: Leica Compendium 2014   Erwin Puts: Leica Compendium 2014   Leica M-System Brochure Leica MP, Leica M7, Leica M8   "Leica M Lenses 
Their Soul and Secrets" 
2002

Erwin Puts:
"Leica Compendium"

Limited Print Version
2012
The Company - The Cameras - The Lenses

Available from eBay
or Amazon.com

 

Erwin Puts:
"Leica Compendium"
Digital Version Compact
PDF/eBook
2014
The Company - The Cameras - The Lenses

Available from Erwin Puts website
as download

 

Leica M System
Digital version
2007
Leica MP, Leica M7, Leica M8
Leica a la carte
Lenses & Acessories
Free download from overgaard.dk

 

Leica Lens Book
Digital version
2005
Leica M system, Leica R system
Leica brochure of lenses as 2005
Free download from overgaard.dk

             
             
             
             
             
             

 

         
         
             
        Definitions
        Courtesy of Oxford American and www.nemeg.com
       

 

See my more complete list of definitions at my article Leica Definitions

 

 

anastigmat an anastigmatic lens system (Leitz Anastigmat (Leitz I) from 1920 with a fixed 50mm f3.5 lens. Produced again as a retro camera in 2000-2002).

anastigmatic (of a lens system) constructed so that the astigmatism of each element is canceled out.
ORIGIN late 19th cent.: from an- 1 [not] + astigmatic (see astigmatism):

astigmatism a defect in the eye or in a lens caused by a deviation from spherical curvature, which results in distorted images, as light rays are prevented from meeting at a common focus.
DERIVATIVES
astigmatic
ORIGIN mid 19th cent.: from a-- [without] + Greek stigma 'point' + -ism.

ASPH
Stands for "aspheric design". Most lenses have a spherical design - that is, the radius of curvature is constant. These are easy to manufacture by grinding while "spinning" the glass. This design however restricts the number of optical corrections that can be made to the design to render the most realistic image possible. ASPH lenses, however, involve usually 1 element that does *not* have a constant radius of curvature. These elements can be made by 1) expensive manual grinding, 2) molded plastic, 3) Leica's patented "press" process, where the element is pressed into an aspherical ("non-spherical") shape. This design allows the manufacturer to introduce corrections into compact lens designs that weren't possible before. Practically, the lens performs "better" (up to interpretation) due to increased correction of the image, in a package not significantly bigger than the spherical version.

Betriebsk
A designation engraved (or silk printed) on top of Leica cameras produced for internal factory use only. 25-50 Leica MP Betriebsk cameras was produced in 1957. But for the M7 for example, ca. 100 M7 Betriebsk cameras was produced, intended for Leica dealers to have as demonstration cameras.
ORIGIN None so far.

Compur
Curently no origin known. Leica I Compur camera (1926-1941) and Leica Summicron (II) Compur 50mm f2.0 lens (1959).

Elmax
Elmax = E. Leitz + Max Berak. Ernst Leitz was the founder of Ernst Leitz Optical Industry which later became Leica. Professor Dr. Max Berak was employed at Leica in 1912 and was the architech of the first Leica lens which Ernst Leitz asked him to design for the "Barnack's camera" (the 1913-prototype named after Oscar Barnack who invented it). The lens was a f/3.5 50mm and was known as the Leitz Anstigmat and later the Elmax.

f
the ratio of the focal length of a camera lens to the diameter of the aperture being used for a particular shot.
ORIGIN early 20th cent.: from f (denoting the focal length) and number

Four Thirds
The Four Thirds System is a standard created by Olympus and Kodak for digital SLR camera design and development.
The system provides a standard which, with digital cameras and lenses available from multiple manufacturers, allows for the interchange of lenses and bodies from different manufacturers. Companies developing 4:3 cameras and/or lenses are Fuji, Kodak, Leica, Olympus, Panasonic, Sanyo, Sigma. See www.4-3system.com

Leica
Leica = LEItz CAmera.

M
(as in "M3", "M6", "M7" etc.)
… stands for "Messucher", which is German for "Viewfinder". The "3" in M3 was chosen because of the three bright line finders for the 50, 90 and 135 mm lenses. Later the numbers of the M cameras were more or less chosen to follow each other.
"Meßsucher". It is always correctly written with the "ß". There are technically not three "s", rather the "ß" and one "s" because it is a word constructed by the combining of two precise words.
M-body evolution in chronologic order:
M3 - MP - M2 - M1 - MD - MDA - M4 - M5 - CL - MD-2 - M4-2 - M4-P - M6 - M6 TTL - M7 - MP - M8.

MOT
Cameras that has been prepared to be fitted with a motor winder to forward the film. For example the Leicaflex SL for manual winding and the Leicaflex SL MOT that is likewise born with manual winding, but can be fitte with a motor winder.

MP
Stands (also) for Mechanical Perfection.

Rangefinder (RF) Camera
A camera where the photographer is using a viewfinder to view and focus (measuring the distance) with; a camera where one is not looking through an actual lens when framing and focusing.

SLR abbreviation for Single-Lens Reflex; the lens that forms the image on the film also provides the image in the viewfinder via a mirror.

viewfinder a device on a camera showing the field of view of the lens, used in framing and focusing the picture; often also works as an instrument to measure the distance (focusing).

             
             
             
             
             
             
             
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