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Carl Zeiss Jena Biotar 75mm F1.5 (version 1) vs Carl Zeiss Jena Biotar 75mm F1.5 (version 2)

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Image properties

Focal length
, 75
, 75
Image stabilisation

Aperture

Aperture max
1.5
1.5
Aperture min
22
22
Aperture ring
Number of diaphragm blades
10
10
Aperture Lock

Optics

Construction
Fixed
Fixed
Elements
6
6
Groups
4
4
Special elements / coatings
Optional
Optional

Focus

Focus method
Extending front
Extending front
Autofocus
Full-time Manual focusing
Closest focusing distance
31.50 in
31.50 in
Distance scale
Depth of field (DoF) scale
Focus distance limiter

Dimensions

Lens type
Telephoto
Telephoto
Lens mount
M42, EXA
M42, EXA
Weight
0.99 lb
1.23 lb
Length
2.99 in
2.99 in
Filter size
2.17 in
2.28 in
Sealing
Filter thread
Filter Built In
Filter Rear Slot
Hood supplied
Tripod collar