ETRSi 6x4.5 Format Single Lens Reflex Camera
The Best of Both Worlds, by combining the image quality of a medium format camera with the operational ease of a 35mm.

ETRSi 6x4.5 Format Single Lens Reflex Camera

Specifications
Type 4.5x6cm format shutter single lens camera , with interchangeable lens , film back , finder and focusing screen systems.
Flame size 42 x 55.1cm
Film 120 roll film ; 220 roll film ; 135 cartridge-loaded film ; and Polaroid Land pack film. (Exclusive film backs for each film type.)
Standard lens ZENZANON PE 75mm F2.8 lens, interchangeable type; 6 elements in 5 groups ; multi-layer anti -reflection coated ; 49.7°angle of view ; F22 minimum aperture ; 0.6m minimum focusing distance.
Lens mount Exclusive four-craw BRONICA ETR bayonet mount.
Shutter Electronic control SEIKO#0 between-lens leaf shutter ; shutter speeds 8 to 1/500sec. plus B(Bulbs) and T(Time) ; mechanical control setting of 1/500sec.
Film winding Film winding crank ; one complete forward revolution or ratcheted winding action
Mirror lock-up Possible with mirror look-up lever.
Multiple exposure Possible with multiple exposure lever ; red warning sign in finder.
Film back Daylight loading interchangeable type ; exclusive film backs for 120 , 220 and 135 roll films and Polaroid Land pack film.
Finder system Interchangeable finder system ; 94% of actual field of view
Focusing screen Interchangeable ; Full-area matte screen. (standard)
Flash synchronization X-setting (up to 1/500sec.) ; auto-flash control based on direct light measurements at the film plane are possible with optional SCA System Adapter.s
Battery checking Red-colored LED lights up within screen area when battery check button is depressed, if there is sufficient power ; also doubles as shutter closing signal.
Battery Single 6-volt silver oxide (4SR44) or alkaline-manganese battery (4LR44)
Dimentions 92(W)x87(H)x69(L)mm (ETRSi main body only.)
92(W)x107(H)x163.5(L)mm (with standard lens, Film back Ei 120 and Weist-Level Finder E.)
Weight 480 grams(ETRSi main body only ; without battery.)
1285 grams(with standards lens , Film Back Ei 120 and Weist-Level Finder E ; without battery)

ZENZANON PE Lens Series (6 x 4.5)
Lends Lens contsruction Angle of View Aperture(F) Min.
Focusing distance(m)
Filter size
(mm)
Size (mm) Weight (g) 35mm equivalent focal length (mm)
PE 35mm F3.5FISHEYE 8-11 180° 3.5-22(with half-click stop) 0.27 ø32.5(Real filter) 84.5 x ø95 900 18
PE 40mm F4 8-9 82.1° 4-22
(with half-click stop)
0.35 ø62 50.5 x ø82 510 24
PE 50mm F2.8 7-9 69.7° 2.8-22(with half-click stop) 0.46 ø 62 50.5 x ø 82 490 30
PE 60mm F2.8 7-7 60.7° 2.8-22(with half-click stop) 0.42 ø 62 54 x ø 82 520 36
PE 75mm F2.8 5-6 49.7° 2.8-22(with half-click stop) 0.6 ø 62 49.5 x ø 82 440 45
PE 105mm F4.5MACRO [1:1] 8-9 36.9° 4.5-32(with half-click stop) 0.35m (Magnification 1:1) ø 67 104 x ø 86 920 63
PE 135mm F4 4-6 29.1° 4-32(with half-click stop) 1.0 ø 62 91.5 x ø 82 750 81
PE 150mm F3.5 5-6 26.1° 3.5-22(with half-click stop) 1.5 ø 62 71 x ø 82 635 90
PE 180mm F4.5 8-9 21.9° 4.5-32(with half-click stop) 1.0 ø 62 107.5 x ø 82 840 110
PE 200mm F4.5 5-6 20.2° 4.5-32(with half-click stop) 2.0 ø 62 109 x ø 82 775 120
PE 250mm F5.6 6-6 16.2° 5.6-45(with half-click stop) 3.0 ø 62 147 x ø 82 910 150
PE 500mm F8 10-11 8.1° 8-64(with half-click stop) 8.0 ø 122 318 x ø 139 3,760 300
Ell 500mm F8 6-7 8-45 8.5 ø 95 267 x ø 102 1,890 300
PE 45-90mm F4.5-5.6 ASPHERICAL 10-11 76.6°
-43.4°
4-32(with half-click stop) 1.0[f=45mm]
0.5[f=90mm]
(Magnification 1:4.3[f=90mm])
ø 95 108.5 x ø 102.5 1,015 27-54
PE 100-220mm F4.8 ASPHERICAL 13-16 38°
-16°
4.8-32(with half-click stop) 1.0
(Magnification 1:4.9[f=220mm])
ø 95 180.5 x ø 106.5 2,175 60-132
TELE CONVERTERPE 2X 6-7 1/2 of prime lens Exposure factor ; 4X (2F/stops) Same as prime lens - 53 x ø 83 460 -
TELE CONVERTERPE 1.4X 5-5 1/1.4 of prime lens Exposure factor ; 2X (1F/stops) Same as prime lens - 28 x ø 83 300 -