Ricoh GXR Brochure & Specs - Page 6

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Paired with a 23.6 mm×15.7 mm image sensor,

this GR LENS is a standard macro boasting superb definition and refined bokeh.

New system enables higher dimension of optical performance

The lens configuration has 8 groups and 9 elements. Making good use of the new

system's advantage of not having to accommodate back focal length, we were able

to design the refractive capabilities of each element in a more efficient and practi-

cal manner than is possible for SLR interchangeable lenses. Partly thanks to the

use of a large-diameter aspherical element, this lens achieves a superior level of

edge-to-edge resolution and image quality unimaginable for its small size.

In addition, there is little vignetting so richly luminous, natural-form bokeh

extends to the edge. The floating structure corrects various types of aberrations

that tend to occur in close-up photography. Even at the minimum shooting

distance, this lens gives excellent definition and sharpness worthy of the GR LENS

name.

*There is a built-in extendable hood.

Lens Unit

Beautiful bokeh and imaging power.23.6 mm × 15.7 mm CMOS sensor

The CMOS sensor boasts 23.6 mm × 15.7 mm size for rich bokeh and approxi-

mately 12.30 million effective pixels for superior resolution. Supporting the excep-

tional optical performance of the GR LENS, this image sensor enables the photog-

rapher to obtain both crisp details and refined bokeh, and the wide dynamic range

gives rich tonal gradations. The result is high image quality that demands printing

in large format.

Maximum 1/2x magnification and a focus ring for full-fledged

close-up photography

Close-up photography at a maximum magnification of 1/2x is possible, with the

minimum shooting distance approximately 7 cm from the front of the lens. A

manual focus ring is also provided. If the body focus ring setting selected is

AF+MF, after the AF focusing is done it is possible to turn the focus ring to make

fine adjustments to the focus.

Beautifully shoot and relive the excitement. High definition (HD)

movie function

Enjoy shooting HD movies. Image size is 1280×720, aspect ratio 16:9, and frame

rate 24 frames/sec. Utilizing the high sensitivity (maximum ISO 3200) and the

beautiful bokeh made possible by the F2.5 aperture and the large image sensor, it

is possible to create impressive movies with a different feel than those of standard

video cameras. The GXR body has an HDMI connector so for large-screen movie

viewing it can be connected to TVs supporting HDMI.

GR LENS A12 50mm F2.5 MACRO – Other Major Specifications

Item

Specifications

Effective pixels

Approximately 12.30 million

Image sensor

23.6×15.7mm CMOS (total pixels: 12.90 million)

Lens

Focal length

33 mm (35 mm format equivalent: 50mm)

Aperture(f-number)

f/2.5 – f/22(ND filter used for apertures of f/22 in auto shooting mode)

Focus range

Normal shooting: Approx. 30 cm – infinity, Macro shooting: Approx. 7 cm – infinity (maximum magnification 1/2x)

Construction

9 elements in 8 groups

Zoom

4.0× digital zoom (3.6x for movies), 5.9× auto resize zoom (VGA)

ISO sensitivity (Standard Output Sensitivity)

AUTO, AUTO-HI, ISO200 / ISO400 / ISO800 / ISO1600 / ISO3200

Flash Range (built-in flash)

Approx. 20 cm – 3.0 m (ISO auto)

Shutter speed

Photographs: 1/3200 – 180 sec. Movies: 1/30 – 1/2000 sec.

Number of pictureｓ shot in Continuous

Noise Reduction off or on (Weak): 4 pictures,

(Picture Size: RAW)

Noise Reduction on (Strong): 3 pictures

Continuous shooting

Photographs: 4288 × 2416, 3776 × 2832, 4288 × 2848, 2848 × 2848, 3456 × 1944,

capacity

3072 × 2304, 3456 × 2304, 2304 × 2304, 2592 × 1944, 2048 × 1536, 1280 × 960, 640 × 480

Movies: 1280 × 720, 640 × 480, 320 × 240

Battery life

Based on CIPA standard, DB-90: approx. 320 shots

Dimensions

Camera unit only:68.7 mm × 57.9 mm × 38.6 mm (excluding projections)

(W × H × D)

When mounted on the camera body:113.9 mm × 70.2 mm × 44.4 mm (excluding projections)

Weight

Camera unit only: Approx. 263g Mounted on camera body: Approx. 423g (not including battery,

SD memory card, or neck strap), accessory weight: approx. 23g (battery, strap)

MTF curve graph

(1/30x F2.5)

100

0.0

4.3

7.1 8.5 9.9 11.4 12.8 14.2

Distance from frame center(mm)

Blue lines:15/mm

Solid lines:Radial values

Red lines:45/mm

Dotted lines:Tangential values

*HDMI cable sold separately.

GR LENS A12 50mm F2.5 MACRO, 1/125sec, f/2.5, ISO200, WB: MANUAL, no