RF 645

6x4.5 Coupled Rangefinder, Leaf Shutter, Manual Focus, X-sync. at all speeds

Format

56x41.5mm

Film Type

120/220 film, 16 frames (120 film), 32 frames (220 film)

Lenses

Zenzanon-RF 45mmF4 (with viewfinder), 65mmF4, 135mmF4.5

Film Advance

Ratcheted Film winding lever

Rangefinder

Dual-image rangefinder, inverse Galilean type, 53.5mm ( base length: 33mm)

Magnification

0.6x

Operating Modes

Manual, Aperture-priority AE, Program AE

Exposure Range

Manual: B, 1 sec. - 1/500 sec. 1 EV step
AE: 8 sec. - 1/500 sec. 1/12 EV step
Program AE: 8 sec. - 1/750 sec. 1/12 EV step
(with dedicated Speedlight shutter speed is locked at 1/60 sec. below EV10)

ISO + Metering

External metering
EV3-18 ISO100
ISO25-1600, 1/3EV Step

Exposure

+/- 2EV~1/2EV Step Compensation

Multiple Exposure

One Shot Multiple exposure activates by button on back,  continuous setting possible

Self Timer

10 sec. Operates with rear panel button. Cancel feature.

AE Lock

On/Off button. Locks up to 5 min. Cancel feature.

Viewfinder Display

Manual Exposure, Shooting mode, AE Lock Activated, Self Timer Activated with countdown, Flash Ready, Multiple exposure, Low Battery Warning

Power

Two CR2 lithium 6V batteries

Light Baffle

Light shielding curtain Automatically activated when switching lenses

Size

145.6(W) × 107.3(H) × 64(D)mm

Weight

810g (28.4 oz. body only, w/o batteries)

Focal Length

45mm

65mm

100mm

Aperture

4-32

4-32

4.5-32

Angle

75.1° 

56.1°

TBA

Elements/
Groups

7/5

6/4

6/5

Focus

1m (3.2 ft.)

1m (3.2 ft.)

1.8m (5.91 ft.)

Filter

58mm

58mm

62mm

Size

43.9 x 76mm

43.9 x 76mm

76 x 83.5mm

Weight

330g (11.5 oz.)

300g (10.5 oz.)

450g (15.9 oz.)

35 Equivalent

27mm

39mm

60mm

Guide No.

20 (ISO100 at normal in Meters)

Flash coverage

N (normal, 65mm angular field covered),
W (wide, 45mm covered)

Auto Range

1m - 20m (ISO 100,)

No. of flashes

Over 100 at full power with  Alkalines

Recycling time

6 seconds at full power

Displays

LCD (backlit)
ISO value, F value, illumination mode, auto compensation value,
illumination cutoff value, Guide Number, adjustment range

Switches + dials

power switch, backlight switch, mode selection, +/- compensation,
test button, Normal Wide Switch over

Power saving

Switches to power saving mode if not operated for five minutes

Power source

Two AA batteries (alkaline battery, or nickel cadmium)

Size

75 (W) x 53.6 (H) x 60.3 (D) mm

Weight

110g (3.8 oz. w/o batteries)