QBM explained

Mount Name:	Quick Bayonet Mount (QBM)
Type:	Bayonet
Tabs:	3
Flange:	44.5 mm
Connectors:	automatic diaphragm
Introduced:	1970

The Quick Bayonet Mount (QBM) is the bayonet mount system for the range of interchangeable lenses fitted to 135 film cameras built by Rollei in Germany and Singapore from 1970 through 1990, including the Rolleiflex SL35,, and Voigtländer VSL series. Lens brands sold with QBM included Carl Zeiss, Rolleinar, Schneider, and Voigtländer. QBM has a flange focal distance of 44.5 mm.

Technical

The aperture ring should be set to its maximum position (smallest -number) before mounting on the camera. The depth-of-field preview should not be engaged during the mounting/dismounting process.

List of QBM lenses

Interchangeable QBM lenses for 35mm SLR cameras! rowspan=2

FL (mm) !		Brand	Name	Construction		Focus	Dimensions			Filter	Notes & Refs.
Ele				Grp	L		Φ	Wt.
Fisheye lenses
14	–16	Rollei	F-Rolleinar MC	10	7					built-in	full-frame fisheye lens
16	–16	Zeiss	HFT F-Distagon	8	7					built-in	full-frame fisheye lens^[1]
Ultra wide angle lenses
15	–22	Zeiss	HFT Distagon	13	12					built-in
18	–22	Zeiss	HFT Distagon	10	9					slip-on, 70 mm	^[2]
21	–16	Rollei	Rolleinar MC	9	8					58 mm
Wide angle lenses
25	–22	Zeiss	HFT Distagon	8	7					49 mm
Voigtländer		Color-Skoparex	Identical to HFT Distagon^[3]
28	–22	Zeiss	HFT Distagon	9	8					55 mm	Floating element design^[4]
28	–16	Rollei	Rolleinar MC	7	7					58 mm
28	–22	Rollei	HFT Rolleinar	8	7					52 mm
35	–16	Zeiss	HFT Distagon	9	8					67 mm	Floating element design
35	–22	Zeiss	HFT Distagon	5	5					49 mm
Voigtländer		Color-Skoparex	Identical to HFT Distagon
35	–16	Rollei	Rolleinar MC	7	5					52 mm
35	–22		SL Angulon	7	6					49 mm	^[5]
35	–22		PC-Curtagon HFT	7	6					49 mm	Includes shift function^[6]
Normal lenses
50	–16	Zeiss	HFT Planar	7	6					49 mm
Voigtländer		Color-Ultron	Identical to HFT Planar
50	–16	Zeiss	HFT Planar	7	6					49 mm
Voigtländer		Color-Ultron	Identical to HFT Planar
50	–16		SL Xenon	6	4					49 mm
50	–22	Rollei	Rolleinar Macro	5	4					49 mm
55	–16	Rollei	Rolleinar MC	7	5					52 mm-->	^[7]
60	–22	Zeiss	HFT S-Planar Macro	6	4					55 mm
Portrait lenses
85	–16	Zeiss	HFT Planar	6	5					67 mm
85	–22	Zeiss	HFT Sonnar	4	4					49 mm
Voigtländer		Color-Dynarex	Identical to HFT Sonnar
85	–16	Rollei	Rolleinar MC	4	4					52 mm
105	–16	Rollei	Rolleinar MC	4	4					52 mm
105	–32	Rollei	HFT Rolleinar Macro	6	6					55 mm
135	–22	Zeiss	HFT Sonnar	4	4					55 mm
Voigtländer		Color-Dynarex	Identical to HFT Sonnar
135	–22	Rollei	Rolleinar MC	4	4					52 mm
135	–22		SL Tele-Xenar	5	5					49 mm
135	–32	Zeiss	HFT Tele-Tessar	4	4					49 mm
Voigtländer		Color-Dynarex	Identical to HFT Tele-Tessar
Telephoto lenses
200	–22	Rollei	Rolleinar MC	4	4					58 mm
200	–32	Zeiss	HFT Tele-Tessar	6	5					67 mm
Voigtländer		Color-Dynarex	Identical to HFT Tele-Tessar
400	–22	Rollei	Rolleinar MC	8	5					72 mm
500		Zeiss	HFT Mirotar	5	5					turret	Special order
500		Rollei	Reflex Rolleinar MC	7	2					33.5 mm	Catadioptric design
1000		Zeiss	HFT Mirotar	5	5					turret	Special order
1000	–64	Zeiss	HFT Tele-Tessar	4	4					Bayonet VI	Special order
Zoom lenses
28~105	~4.5–22	Rollei	HFT Rolleinar	15	11					67 mm
35~105	–16	Rollei	Zoom-Rolleinar MC	13	11					72 mm
35~105	~4.3–22	Rollei	Zoom-Rolleinar MC	16	13					55 mm
50~250	~5.6–22	Rollei	HFT Rolleinar	14	11					55 mm
75~150	–22	Rollei	Zoom-Rolleinar MC	9	?					58 mm
80~200	–32	Rollei	HFT Rolleinar	17	11					77 mm
80~200	–22	Rollei	Zoom-Rolleinar MC	12	9					55 mm
80~200	–32	Rollei	Zoom-Rolleinar MC	13	9					55 mm

Notes

External links

• Web site: Lenses for bayonet mount VSL . Voigtlander Camera Collection.

Notes and References

1. Web site: Rolleiflex SL35 M operating guide . Rollei Fototechnik . 21 April 2023.
2. Web site: Rolleiflex SL3003 (brochure) . Rollei Fototechnik . Pacific Rim Camera, Reference Library . 21 April 2023.
3. Web site: Voigtlander VSL operating manuals . M.Butkus . Rollei . 2 May 2023.
4. Web site: System Summary: SL 2000 F . Rollei Fototechnic . Pacific Rim Camera, Reference Library . 21 April 2023.
5. Web site: Rolleiflex SL35 (dealer catalog) . Rollei Fototechnik . Pacific Rim Camera, Reference Library . 21 April 2023.
6. Web site: Rolleiflex SL2000F 35mm SLR Camera System (dealer suggested retail prices) . Rollei Fototechnik . Pacific Rim Camera, Reference Library . 21 April 2023.
7. Web site: Lens Specification for 35mm SLRs . September 1979 . Rollei of America . Pacific Rim Camera, Reference Library . 21 April 2023.