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Cameras
RED

RED Gemini 5K S35

Camera

The sensor, in perspective.

Capture area at a shared scale. The dashed outline is a 36 × 24 mm full-frame reference.

Cameras

RED Gemini 5K S35

Sensor area indexGeometric · full frame = 100
77.8
Active dimensions
25.92 × 25.92 mm
Active area
671.85 mm²
Crop factor
1.18 ×
Area vs full frame
-0.36 stops

The index is calculated from area, assuming equal scene illumination, f-number and exposure time. It is not a low-light test or an image-quality score: lens transmission, quantum efficiency, noise and processing are not included. A crop mode changes the area used, not the physical sensor.

Dynamic range ≠ EV operating range. Autofocus and metering limits describe operating conditions. Manufacturer HDR claims appear separately below; independent dynamic-range measurements require a matched test method, ISO and noise threshold.

Sensor specifications

Reference active width
25.92 mm
Reference active height
25.92 mm
Sensor technology
CMOS
Reference capture area
4K 1:1

Capture & exposure

Camera family
Cinema
Shutter
Rolling

Capture modes

51 capture modes
  • 4K 1:1
    Active height
    25.92 mm
    Active width
    25.92 mm
    Horizontal pixels
    4,320 px
    Vertical pixels
    4,320 px
  • 4.5K 3:2
    Active height
    17.28 mm
    Active width
    25.92 mm
    Horizontal pixels
    4,320 px
    Vertical pixels
    2,880 px
  • 4.5K HD
    Active height
    14.26 mm
    Active width
    25.34 mm
    Horizontal pixels
    4,224 px
    Vertical pixels
    2,376 px
  • 4K FF
    Active height
    12.96 mm
    Active width
    24.58 mm
    Horizontal pixels
    4,096 px
    Vertical pixels
    2,160 px
  • 4K 2:1
    Active height
    12.29 mm
    Active width
    24.58 mm
    Horizontal pixels
    4,096 px
    Vertical pixels
    2,048 px
  • 4K WS
    Active height
    10.37 mm
    Active width
    24.58 mm
    Horizontal pixels
    4,096 px
    Vertical pixels
    1,728 px
  • 4K 4:1
    Active height
    6.14 mm
    Active width
    24.58 mm
    Horizontal pixels
    4,096 px
    Vertical pixels
    1,024 px
  • 4K 8:1
    Active height
    3.07 mm
    Active width
    24.58 mm
    Horizontal pixels
    4,096 px
    Vertical pixels
    512 px
  • 4K 4:3
    Active height
    17.28 mm
    Active width
    23.04 mm
    Horizontal pixels
    3,840 px
    Vertical pixels
    2,880 px
  • 4K 3:2
    Active height
    15.36 mm
    Active width
    23.04 mm
    Horizontal pixels
    3,840 px
    Vertical pixels
    2,560 px
  • 4K HD
    Active height
    12.96 mm
    Active width
    23.04 mm
    Horizontal pixels
    3,840 px
    Vertical pixels
    2,160 px
  • 5K 6:5
    Active height
    18 mm
    Active width
    21.60 mm
    Horizontal pixels
    3,600 px
    Vertical pixels
    3,000 px
  • 3.5K FF
    Active height
    11.26 mm
    Active width
    21.50 mm
    Horizontal pixels
    3,584 px
    Vertical pixels
    1,876 px
  • 3.5K WS
    Active height
    9.07 mm
    Active width
    21.50 mm
    Horizontal pixels
    3,584 px
    Vertical pixels
    1,512 px
  • 3.5K 2:1
    Active height
    10.75 mm
    Active width
    21.50 mm
    Horizontal pixels
    3,584 px
    Vertical pixels
    1,792 px
  • 3.5K 4:1
    Active height
    5.38 mm
    Active width
    21.50 mm
    Horizontal pixels
    3,584 px
    Vertical pixels
    896 px
  • 3.5K 8:1
    Active height
    2.69 mm
    Active width
    21.50 mm
    Horizontal pixels
    3,584 px
    Vertical pixels
    448 px
  • 3.5K HD
    Active height
    11.66 mm
    Active width
    20.74 mm
    Horizontal pixels
    3,456 px
    Vertical pixels
    1,944 px
  • 3.5K 5:4
    Active height
    16.13 mm
    Active width
    20.16 mm
    Horizontal pixels
    3,360 px
    Vertical pixels
    2,688 px
  • 3.5K 4:3
    Active height
    15.12 mm
    Active width
    20.16 mm
    Horizontal pixels
    3,360 px
    Vertical pixels
    2,520 px
  • 3.5K 3:2
    Active height
    13.44 mm
    Active width
    20.16 mm
    Horizontal pixels
    3,360 px
    Vertical pixels
    2,240 px
  • 3K FF
    Active height
    9.72 mm
    Active width
    18.43 mm
    Horizontal pixels
    3,072 px
    Vertical pixels
    1,620 px
  • 3K 2:1
    Active height
    9.22 mm
    Active width
    18.43 mm
    Horizontal pixels
    3,072 px
    Vertical pixels
    1,536 px
  • 3K 8:1
    Active height
    2.30 mm
    Active width
    18.43 mm
    Horizontal pixels
    3,072 px
    Vertical pixels
    384 px
  • 3K WS
    Active height
    7.78 mm
    Active width
    18.43 mm
    Horizontal pixels
    3,072 px
    Vertical pixels
    1,296 px
  • 3K 4:1
    Active height
    4.61 mm
    Active width
    18.43 mm
    Horizontal pixels
    3,072 px
    Vertical pixels
    768 px
  • 3K 5:4
    Active height
    13.82 mm
    Active width
    17.28 mm
    Horizontal pixels
    2,880 px
    Vertical pixels
    2,304 px
  • 3K 4:3
    Active height
    12.96 mm
    Active width
    17.28 mm
    Horizontal pixels
    2,880 px
    Vertical pixels
    2,160 px
  • 3K 3:2
    Active height
    11.52 mm
    Active width
    17.28 mm
    Horizontal pixels
    2,880 px
    Vertical pixels
    1,920 px
  • 3K HD
    Active height
    9.72 mm
    Active width
    17.28 mm
    Horizontal pixels
    2,880 px
    Vertical pixels
    1,620 px
  • 4K 6:5
    Active height
    12.96 mm
    Active width
    15.55 mm
    Horizontal pixels
    2,592 px
    Vertical pixels
    2,160 px
  • 2.5K FF
    Active height
    8.04 mm
    Active width
    15.36 mm
    Horizontal pixels
    2,560 px
    Vertical pixels
    1,340 px
  • 2.5K 2:1
    Active height
    7.68 mm
    Active width
    15.36 mm
    Horizontal pixels
    2,560 px
    Vertical pixels
    1,280 px
  • 2.5K WS
    Active height
    6.48 mm
    Active width
    15.36 mm
    Horizontal pixels
    2,560 px
    Vertical pixels
    1,080 px
  • 2.5K 8:1
    Active height
    1.92 mm
    Active width
    15.36 mm
    Horizontal pixels
    2,560 px
    Vertical pixels
    320 px
  • 2.5K 4:1
    Active height
    3.84 mm
    Active width
    15.36 mm
    Horizontal pixels
    2,560 px
    Vertical pixels
    640 px
  • 2.5K 5:4
    Active height
    11.52 mm
    Active width
    14.40 mm
    Horizontal pixels
    2,400 px
    Vertical pixels
    1,920 px
  • 2.5K 4:3
    Active height
    10.80 mm
    Active width
    14.40 mm
    Horizontal pixels
    2,400 px
    Vertical pixels
    1,800 px
  • 2.5K 3:2
    Active height
    9.60 mm
    Active width
    14.40 mm
    Horizontal pixels
    2,400 px
    Vertical pixels
    1,600 px
  • 2.5K HD
    Active height
    7.78 mm
    Active width
    13.82 mm
    Horizontal pixels
    2,304 px
    Vertical pixels
    1,296 px
  • 2K 4:1
    Active height
    3.07 mm
    Active width
    12.29 mm
    Horizontal pixels
    2,048 px
    Vertical pixels
    512 px
  • 2K FF
    Active height
    6.48 mm
    Active width
    12.29 mm
    Horizontal pixels
    2,048 px
    Vertical pixels
    1,080 px
  • 2K 2:1
    Active height
    6.14 mm
    Active width
    12.29 mm
    Horizontal pixels
    2,048 px
    Vertical pixels
    1,024 px
  • 2K WS
    Active height
    5.18 mm
    Active width
    12.29 mm
    Horizontal pixels
    2,048 px
    Vertical pixels
    864 px
  • 2K 8:1
    Active height
    1.54 mm
    Active width
    12.29 mm
    Horizontal pixels
    2,048 px
    Vertical pixels
    256 px
  • 3K 6:5
    Active height
    9.72 mm
    Active width
    11.66 mm
    Horizontal pixels
    1,944 px
    Vertical pixels
    1,620 px
  • 2K 5:4
    Active height
    9.22 mm
    Active width
    11.52 mm
    Horizontal pixels
    1,920 px
    Vertical pixels
    1,536 px
  • 2K 4:3
    Active height
    8.64 mm
    Active width
    11.52 mm
    Horizontal pixels
    1,920 px
    Vertical pixels
    1,440 px
  • 2K 3:2
    Active height
    7.68 mm
    Active width
    11.52 mm
    Horizontal pixels
    1,920 px
    Vertical pixels
    1,280 px
  • 2K HD
    Active height
    6.48 mm
    Active width
    11.52 mm
    Horizontal pixels
    1,920 px
    Vertical pixels
    1,080 px
  • 2K 6:5
    Active height
    6.48 mm
    Active width
    7.78 mm
    Horizontal pixels
    1,296 px
    Vertical pixels
    1,080 px