View source for Super-Angulon f= 2.1 cm 1:4

[[Image:Sangulon.jpg|200px]] [[Image:M-21f4-sa.jpg|210px]]

*'''Leica Order No.''' - SUOON 11 002 (S), SUMOM 11 102 (M) '''LLC''' - 138  
*'''Production era''' -  1958-1981, 1462 screw and 5292* M-bayonet < 27,000 lenses (*low number, perhaps ca.20,000 based on assigned s/n list below - or more of the 1:4 lenses should be listed as the 1:3.4 lens or as R lens - see s/n notes)
*'''Manufacturer''' - Schneider-Kreuznach
*'''Lens mount''' - Leica Screw-thread and unique M-bayonet addaptor removable for screw-mount use
*'''Compatibility''' - Can be used on [[M8]] or [[M9]] cameras (without exposure metering).
*'''Number of lenses /groups''' - 9 /4
*'''F stop range''' - f/4-f/22 in full click-stops
*'''Closest focusing distance''' - 40 cm /1.31 ft
*'''Smallest object field''' -
*'''Diaphragm setting /type''' - 9 leaf
*'''Angle of view''' diagonal - 92 degrees
*'''Filter type''' -  A42 - E39
*'''Accessories''' - Viewfinder: [[SBKOO]]; Hood: [[IWKOO]] 12502
*'''Materials''' -  Chrome plated brass
*'''Dimensions''' (length x diameter) - 51 x 27 mm / 2.01 x 1.06 in
*'''Weight''' - 250 g /8.82 oz
*'''Inscription''' - SUPER-ANGULON 1:4/21 LEITZ WETZLAR 1XXXXXX
*'''Designer''' - Guenther Klemt - Schneider Kreuznack

== Comment ==
*'''On the street''' - $US 1,000
*'''Forum discussion'''
**[http://www.l-camera-forum.com/leica-forum/leica-collectors-historica/117814-lens-numbering.html]
*'''Reviews'''
**[http://www.luciolepri.it/lc2/marcocavina/articoli_fotografici/Soviet_and_wide_lenses_on_Leica_M/00_p.htm Marco Cavina]
**[http://www.kenrockwell.com/leica/21mm-f4.htm Ken Rockwell]

== Super-Angulon f= 2.1 cm 1:4 Serial Numbers ==

{| class="prettytable"
!SN Start
!SN End
!Product
!Year
!Total
|-
|1583001||1583100||Super-Angulon f= 2.1 cm 1:4||1958||100
|-
|1604001||1605000||Super-Angulon f= 2.1 cm 1:4 (S)||1958||1000
|-
|1645301||1647000||Super-Angulon f= 2.1 cm 1:4 (M)||1959||1700
|-
|1672501||1673500||Super-Angulon f= 2.1 cm 1:4 (S+M)||1959||1000
|-
|1674501||1675500||Super-Angulon f= 2.1 cm (S)1:4||1959||1000
|-
|1676001||1677000||Super-Angulon f= 2.1 cm 1:4 (M)||1959||1000
|-
|1714501||1717000||Super-Angulon f= 2.1 cm 1:4 (M)||1959||2500
|-
|1967101*||1968100||Super-Angulon f= 2.1 cm 1:4* ||1962||1000
|-
|2027501^||2028000||Super-Angulon f= 2.1 cm 1:4^ (S)||1964||500
|-
|2035001^||2036000||Super-Angulon f= 2.1 cm 1:4^ (S) ||1964||1000
|-
|2054001||2056000||Super-Angulon f= 2.1 cm 1:4 ||1964||2000
|-
|2057501||2059500||Super-Angulon f= 2.1 cm 1:4 ||1964||2000
|-
|2283351||2283950||Super-Angulon f= 2.1 cm 1:4 ||1968||600
|-
|2318401||2319000||Super-Angulon f= 2.1 cm 1:4 ||1969||600
|-
|2353301||2354300||Super-Angulon f= 2.1 cm 1:4 ||1969||1000
|-
|2396401||2398400||Super-Angulon f= 2.1 cm 1:4||1970||2000
|-
|2448001||2450000||Super-Angulon f= 2.1 cm 1:4 ||1970||2000
|-
|2485201||2487200||Super-Angulon f= 2.1 cm 1:4 ||1971||2000
|-
|2613101||2615100||Super-Angulon f= 2.1 cm 1:4 ||1973||2000
|-
|2820351||2821350||Super-Angulon f= 2.1 cm 1:4 ||1977||1000
|-
|2982601||2983100||Super-Angulon f= 2.1 cm 1:4 ||1979||500**
|-
|3105001||3105500||Super-Angulon f= 2.1 cm 1:4 ||1981||500
|-
|TOTAL||ASSIGNED||SERIAL NUMBERS ||1958-1981||27,000
|-
Serial numbers compiled from [http://www.imx.nl/photo/downloads/files/leicapocket_pod1.pdf Puts Pocket Pod]<br>
.* Note: JCB has 1967101 as the first batch f= 2.1 cm 1:3.4 lens - see Forum discussion [1] above - Puts has this batch with the 1:4 lens<br>
.** Westlicht has at least one in this batch as R lens<br>
^ Schouten has lens 2027728 & 2035381 as 1:3.4 not 1:4