OPTICSLAB
JAENESDEFRPT
Near Limit
1.27 m
Far Limit
4.73 m
Depth of Field
3.46 m
21% front / 79% rear
Hyperfocal
5.98 m

Optical Ray Simulation

GM FE 2.8/18 GM In Focus: 1.27m - 4.73m Bokeh Disk 00.51.01.52.02.53.0 Distance m

Aperture DoF Matrix

Aperture 1.42.02.84.05.68.01116
Near Limit 1.55 m1.42 m1.27 m1.10 m0.93 m0.76 m0.61 m0.47 m
Far Limit 2.81 m3.40 m4.73 m11.37 m∞∞∞∞
Total DoF 1.26 m1.99 m3.46 m10.28 m∞∞∞∞
Hyperfocal 11.96 m8.37 m5.98 m4.19 m2.99 m2.09 m1.52 m1.05 m

Bokeh & 35mm Sensor Equivalence

Primary System A: Ricoh GR III 18.3mm f/2.8
35mm Equiv 28.0mm f/4.28 / DoF 3.46 m
Reference System B: Leica Q3 28mm f/1.7
35mm Equiv 28.0mm f/1.70 / DoF 0.95 m
Metric Primary System A Reference System B
Sensor Dimensions 23.5 × 15.6 mm / 1.53× 36 × 24 mm / 1.00×
Circle of Confusion 0.020 mm 0.030 mm
35mm Equiv Focal 28.0 mm 28.0 mm
35mm Equiv Aperture f/4.28 f/1.70
Entrance Pupil 6.54 mm 16.47 mm
Infinity Blur Disc 0.060 mm 0.234 mm

Angle of View & Frame Coverage

Horizontal Angle
65.4°
Frame Width @ 2.0 m: 2.57 m
Vertical Angle
46.2°
Frame Height @ 2.0 m: 1.70 m
Diagonal Angle
75.2°
Frame Diagonal @ 2.0 m: 3.08 m

Print Dimensions & Paper DPI

Native Resolution: 6038 × 4008 px / 24.2 MP

Maximum Print Size by DPI

Standard Paper Sheet DPI

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Matched Focal & Stop Ricoh GR III 18mm f/2.8 18 mm f/2.8
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Optical Benchmarks

122
Camera Lens Sensor Focal / Stop Focus Depth of Field Hyperfocal
Sony α7 IV FE 50mm F1.4 GM Full Frame 50 mmf/1.4 3.0 m
0.53 m
59.5 m Open →
Sony α7R V FE 85mm F1.4 GM II Full Frame 85 mmf/1.4 3.2 m
0.21 m
172.0 m Open →
Sony α9 III FE 300mm F2.8 GM OSS Full Frame 300 mmf/2.8 12.0 m
0.46 m
1071.4 m Open →
Canon EOS R5 II RF 85mm F1.2L USM Full Frame 85 mmf/1.2 3.0 m
0.15 m
200.7 m Open →
Canon EOS R5 II RF 50mm F1.2L USM Full Frame 50 mmf/1.2 2.8 m
0.39 m
69.4 m Open →
Nikon Z8 NIKKOR Z 85mm f/1.2 S Full Frame 85 mmf/1.2 3.0 m
0.15 m
200.7 m Open →
Nikon Zf NIKKOR Z 40mm f/2 Full Frame 40 mmf/2.0 2.5 m
0.83 m
26.7 m Open →
Fujifilm X100VI Fujinon 23mm f/2 II APS-C 23 mmf/2.0 2.2 m
1.38 m
13.2 m Open →
Fujifilm GFX 100 II GF 55mm f/1.7 R WR Medium Format 55 mmf/1.7 2.5 m
0.46 m
46.8 m Open →
Leica Q3 Summilux 28mm f/1.7 ASPH. Full Frame 28 mmf/1.7 2.0 m
0.95 m
15.4 m Open →
Ricoh GR III GR Lens 18.3mm f/2.8 APS-C 18.3 mmf/2.8 2.0 m
3.46 m
6.0 m Open →
Hasselblad X2D 100C XCD 2,5/90V Medium Format 90 mmf/2.5 3.0 m
0.37 m
85.3 m Open →
Sony α7 IV FE 35mm F1.4 GM Full Frame 35 mmf/1.4 2.5 m
0.76 m
29.2 m Open →
Sony α7 IV FE 85mm F1.4 GM II Full Frame 85 mmf/1.4 3.5 m
0.25 m
172.0 m Open →
Sony α7 IV FE 24mm F1.4 GM Full Frame 24 mmf/1.4 2.5 m
1.74 m
13.7 m Open →
Sony α7 IV FE 24-70mm F2.8 GM II @ 50mm Full Frame 50 mmf/2.8 3.0 m
1.08 m
29.8 m Open →
Sony α7 IV FE 70-200mm F2.8 GM OSS II @ 135mm Full Frame 135 mmf/2.8 5.0 m
0.40 m
217.0 m Open →
Sony α7R V FE 50mm F1.2 GM Full Frame 50 mmf/1.2 2.8 m
0.39 m
69.4 m Open →
Sony α7R V FE 135mm F1.8 GM Full Frame 135 mmf/1.8 4.5 m
0.21 m
337.5 m Open →
Sony α7R V FE 16-35mm F2.8 GM II @ 24mm Full Frame 24 mmf/8.0 5.0 m
∞
2.4 m Open →
Sony α7R V FE 35mm F1.4 GM Full Frame 35 mmf/1.4 2.5 m
0.76 m
29.2 m Open →
Sony α7C II FE 40mm F2.5 G Full Frame 40 mmf/2.5 2.5 m
1.05 m
21.3 m Open →
Sony α7C II FE 24mm F2.8 G Full Frame 24 mmf/2.8 2.0 m
2.69 m
6.9 m Open →
Sony α7C II FE 35mm F1.8 Full Frame 35 mmf/1.8 2.5 m
0.99 m
22.7 m Open →
Sony α7C II FE 50mm F1.8 Full Frame 50 mmf/1.8 3.0 m
0.68 m
46.3 m Open →
Sony α7CR FE 35mm F1.4 GM Full Frame 35 mmf/1.4 2.5 m
0.76 m
29.2 m Open →
Sony α7CR FE 50mm F2.5 G Full Frame 50 mmf/2.5 3.0 m
0.95 m
33.3 m Open →
Sony α7S III FE 24mm F1.4 GM Full Frame 24 mmf/1.4 2.0 m
1.07 m
13.7 m Open →
Sony α7S III FE 35mm F1.4 GM Full Frame 35 mmf/1.4 2.2 m
0.58 m
29.2 m Open →
Sony α9 III FE 85mm F1.4 GM II Full Frame 85 mmf/1.4 3.5 m
0.25 m
172.0 m Open →
Sony α1 FE 50mm F1.2 GM Full Frame 50 mmf/1.2 3.0 m
0.45 m
69.4 m Open →
Sony α1 FE 135mm F1.8 GM Full Frame 135 mmf/1.8 4.5 m
0.21 m
337.5 m Open →
Sony α1 II FE 85mm F1.4 GM II Full Frame 85 mmf/1.4 3.2 m
0.21 m
172.0 m Open →
Sony α7 III FE 50mm F1.8 Full Frame 50 mmf/1.8 3.0 m
0.68 m
46.3 m Open →
Sony α6700 Sigma 23mm F1.4 DC DN APS-C 23 mmf/1.4 2.5 m
1.14 m
19.9 m Open →
Sony α6700 Sigma 56mm F1.4 DC DN APS-C 56 mmf/1.4 3.0 m
0.26 m
117.9 m Open →
Sony ZV-E10 II Sigma 16mm F1.4 DC DN APS-C 16 mmf/1.4 1.2 m
0.54 m
9.6 m Open →
Sony FX3 FE 35mm F1.4 GM Full Frame 35 mmf/1.4 2.0 m
0.48 m
29.2 m Open →
Sony RX100 VII Zeiss Vario-Sonnar T* 9.0mm 1-inch 9 mmf/2.8 2.0 m
∞
2.6 m Open →
Canon EOS R5 II RF 35mm F1.4L VCM Full Frame 35 mmf/1.4 2.5 m
0.76 m
29.2 m Open →
Canon EOS R5 II RF 28-70mm F2L USM @ 50mm Full Frame 50 mmf/2.0 3.0 m
0.76 m
41.7 m Open →
Canon EOS R5 II RF 135mm F1.8L IS USM Full Frame 135 mmf/1.8 4.5 m
0.21 m
337.5 m Open →
Canon EOS R5 RF 85mm F1.2L USM Full Frame 85 mmf/1.2 3.2 m
0.18 m
200.7 m Open →
Canon EOS R5 RF 15-35mm F2.8L IS USM @ 24mm Full Frame 24 mmf/8.0 5.0 m
∞
2.4 m Open →
Canon EOS R6 II RF 50mm F1.8 STM Full Frame 50 mmf/1.8 3.0 m
0.68 m
46.3 m Open →
Canon EOS R6 II RF 35mm F1.8 Macro IS STM Full Frame 35 mmf/1.8 2.2 m
0.76 m
22.7 m Open →
Canon EOS R6 II RF 85mm F2 Macro IS STM Full Frame 85 mmf/2.0 3.0 m
0.26 m
120.4 m Open →
Canon EOS R6 II RF 70-200mm F2.8L IS USM @ 135mm Full Frame 135 mmf/2.8 4.5 m
0.32 m
217.0 m Open →
Canon EOS R8 RF 28mm F2.8 STM Pancake Full Frame 28 mmf/2.8 2.5 m
2.94 m
9.3 m Open →
Canon EOS R8 RF 50mm F1.8 STM Full Frame 50 mmf/1.8 2.8 m
0.59 m
46.3 m Open →
Canon EOS R8 RF 35mm F1.8 Macro IS STM Full Frame 35 mmf/1.8 2.5 m
0.99 m
22.7 m Open →
Canon EOS R3 RF 85mm F1.2L USM Full Frame 85 mmf/1.2 3.5 m
0.21 m
200.7 m Open →
Canon EOS R1 RF 100-300mm F2.8L IS USM @ 200mm Full Frame 200 mmf/2.8 8.0 m
0.46 m
476.2 m Open →
Canon EOS R7 Sigma 30mm F1.4 DC DN APS-C Canon 30 mmf/1.4 2.8 m
0.77 m
35.7 m Open →
Canon EOS R7 Sigma 18-50mm F2.8 DC DN @ 35mm APS-C Canon 35 mmf/2.8 3.0 m
1.34 m
24.3 m Open →
Canon EOS R10 RF 24mm F1.8 Macro IS STM APS-C Canon 24 mmf/1.8 2.2 m
0.98 m
17.8 m Open →
Canon EOS R10 RF 50mm F1.8 STM APS-C Canon 50 mmf/1.8 3.0 m
0.40 m
77.2 m Open →
Nikon Z8 NIKKOR Z 50mm f/1.2 S Full Frame 50 mmf/1.2 2.8 m
0.39 m
69.4 m Open →
Nikon Z8 NIKKOR Z 135mm f/1.8 S Plena Full Frame 135 mmf/1.8 4.2 m
0.18 m
337.5 m Open →
Nikon Z8 NIKKOR Z 35mm f/1.4 Full Frame 35 mmf/1.4 2.5 m
0.76 m
29.2 m Open →
Nikon Z8 NIKKOR Z 20mm f/1.8 S Full Frame 20 mmf/1.8 3.0 m
8.19 m
7.4 m Open →
Nikon Z9 NIKKOR Z 85mm f/1.2 S Full Frame 85 mmf/1.2 3.2 m
0.18 m
200.7 m Open →
Nikon Z9 NIKKOR Z 135mm f/1.8 S Plena Full Frame 135 mmf/1.8 4.5 m
0.21 m
337.5 m Open →
Nikon Z9 NIKKOR Z 400mm f/2.8 TC VR S Full Frame 400 mmf/2.8 15.0 m
0.41 m
1904.8 m Open →
Nikon Z6 III NIKKOR Z 50mm f/1.8 S Full Frame 50 mmf/1.8 3.0 m
0.68 m
46.3 m Open →
Nikon Z6 III NIKKOR Z 35mm f/1.4 Full Frame 35 mmf/1.4 2.5 m
0.76 m
29.2 m Open →
Nikon Z6 III NIKKOR Z 85mm f/1.8 S Full Frame 85 mmf/1.8 3.2 m
0.26 m
133.8 m Open →
Nikon Zf NIKKOR Z 28mm f/2.8 Full Frame 28 mmf/2.8 2.5 m
2.94 m
9.3 m Open →
Nikon Zf NIKKOR Z 50mm f/1.4 Full Frame 50 mmf/1.4 2.8 m
0.46 m
59.5 m Open →
Nikon Zf Voigtländer Nokton 35mm f/1.4 Z Full Frame 35 mmf/1.4 2.4 m
0.70 m
29.2 m Open →
Nikon Zfc NIKKOR Z 28mm f/2.8 APS-C 28 mmf/2.8 2.5 m
1.70 m
14.0 m Open →
Nikon Z50 II NIKKOR Z DX 24mm f/1.7 APS-C 24 mmf/1.7 2.2 m
1.04 m
16.9 m Open →
Nikon Z50 II Sigma 56mm F1.4 DC DN Z APS-C 56 mmf/1.4 3.0 m
0.28 m
112.0 m Open →
Fujifilm X100VI Fujinon 23mm f/2 II @ f/4 APS-C 23 mmf/4.0 2.5 m
5.67 m
6.6 m Open →
Fujifilm X100VI Fujinon 23mm f/2 II @ f/8 Zone Focus APS-C 23 mmf/8.0 3.5 m
∞
3.3 m Open →
Fujifilm X-T5 XF 33mm f/1.4 R LM WR APS-C 33 mmf/1.4 2.8 m
0.71 m
38.9 m Open →
Fujifilm X-T5 XF 23mm f/1.4 R LM WR APS-C 23 mmf/1.4 2.4 m
1.10 m
18.9 m Open →
Fujifilm X-T5 XF 56mm f/1.2 R WR APS-C 56 mmf/1.2 3.0 m
0.24 m
130.7 m Open →
Fujifilm X-T5 XF 18mm f/1.4 R LM WR APS-C 18 mmf/1.4 2.2 m
1.62 m
11.6 m Open →
Fujifilm X-T5 XF 35mm f/1.4 R APS-C 35 mmf/1.4 2.5 m
0.50 m
43.8 m Open →
Fujifilm X-T5 XF 27mm f/2.8 R WR Pancake APS-C 27 mmf/2.8 2.5 m
1.86 m
13.0 m Open →
Fujifilm X-T5 XF 90mm f/2 R LM WR APS-C 90 mmf/2.0 4.0 m
0.27 m
202.5 m Open →
Fujifilm X-S20 XF 23mm f/2 R WR APS-C 23 mmf/2.0 2.5 m
1.82 m
13.2 m Open →
Fujifilm X-S20 XF 35mm f/2 R WR APS-C 35 mmf/2.0 2.8 m
0.91 m
30.6 m Open →
Fujifilm X-H2S XF 50-140mm f/2.8 R LM OIS WR @ 90mm APS-C 90 mmf/2.8 4.5 m
0.48 m
144.6 m Open →
Fujifilm X-M5 XF 27mm f/2.8 R WR Pancake APS-C 27 mmf/2.8 2.5 m
1.86 m
13.0 m Open →
Fujifilm GFX 100 II GF 110mm f/2 R LM WR Medium Format 110 mmf/2.0 3.2 m
0.22 m
159.2 m Open →
Fujifilm GFX 100 II GF 80mm f/1.7 R WR Medium Format 80 mmf/1.7 2.8 m
0.27 m
99.1 m Open →
Fujifilm GFX 100 II GF 45mm f/2.8 R WR Medium Format 45 mmf/2.8 2.8 m
1.52 m
19.0 m Open →
Fujifilm GFX 100 II GF 23mm f/4 R LM WR @ f/8 Landscape Medium Format 23 mmf/8.0 5.0 m
∞
1.7 m Open →
Fujifilm GFX 100S II GF 63mm f/2.8 R WR Medium Format 63 mmf/2.8 3.0 m
0.85 m
37.3 m Open →
Fujifilm GFX 100S II GF 110mm f/2 R LM WR Medium Format 110 mmf/2.0 3.5 m
0.27 m
159.2 m Open →
Fujifilm GFX 100S II GF 32-64mm f/4 R LM WR @ 32mm Medium Format 32 mmf/8.0 5.0 m
∞
3.4 m Open →
Leica Q3 Summilux 28mm f/1.7 @ f/8 Street Zone Full Frame 28 mmf/8.0 3.0 m
∞
3.3 m Open →
Leica Q3 43 APO-Summicron 43mm f/2 ASPH. Full Frame 43 mmf/2.0 2.5 m
0.71 m
30.8 m Open →
Leica Q3 43 APO-Summicron 43mm f/2 @ f/5.6 Full Frame 43 mmf/5.6 3.0 m
3.62 m
11.0 m Open →
Leica M11 Summilux-M 35mm f/1.4 ASPH. FLE II Full Frame 35 mmf/1.4 2.2 m
0.58 m
29.2 m Open →
Leica M11 Summilux-M 50mm f/1.4 ASPH. Full Frame 50 mmf/1.4 2.8 m
0.46 m
59.5 m Open →
Leica M11 Noctilux-M 50mm f/1.2 ASPH. Full Frame 50 mmf/1.2 2.5 m
0.31 m
69.4 m Open →
Leica M11 Summicron-M 28mm f/2 ASPH. Full Frame 28 mmf/2.0 2.5 m
1.85 m
13.1 m Open →
Leica M11 APO-Summicron-M 35mm f/2 ASPH. Full Frame 35 mmf/2.0 2.5 m
1.11 m
20.4 m Open →
Leica SL3 Summilux-SL 50mm f/1.4 ASPH. Full Frame 50 mmf/1.4 3.0 m
0.53 m
59.5 m Open →
Leica SL3 APO-Summicron-SL 90mm f/2 ASPH. Full Frame 90 mmf/2.0 3.5 m
0.31 m
135.0 m Open →
Ricoh GR III GR Lens 18.3mm @ f/8 Snap Focus 2.5m APS-C 18.3 mmf/8.0 2.5 m
∞
2.1 m Open →
Ricoh GR IIIx GR Lens 26.1mm f/2.8 APS-C 26.1 mmf/2.8 2.2 m
1.52 m
12.2 m Open →
Ricoh GR IIIx GR Lens 26.1mm @ f/8 Snap Focus 3.0m APS-C 26.1 mmf/8.0 3.0 m
∞
4.3 m Open →
Hasselblad X2D 100C XCD 2,5/55V Medium Format 55 mmf/2.5 2.5 m
0.69 m
31.8 m Open →
Hasselblad X2D 100C XCD 2,5/38V Medium Format 38 mmf/2.5 2.5 m
1.54 m
15.2 m Open →
Hasselblad X2D 100C XCD 1,9/80 Medium Format 80 mmf/1.9 2.8 m
0.31 m
88.6 m Open →
Hasselblad X2D 100C XCD 4/28P @ f/8 Landscape Medium Format 28 mmf/8.0 5.0 m
∞
2.6 m Open →
Lumix S5 II Lumix S 50mm F1.8 Full Frame 50 mmf/1.8 3.0 m
0.68 m
46.3 m Open →
Lumix S5 II Lumix S 35mm F1.8 Full Frame 35 mmf/1.8 2.5 m
0.99 m
22.7 m Open →
Lumix S5 II Lumix S 85mm F1.8 Full Frame 85 mmf/1.8 3.2 m
0.26 m
133.8 m Open →
Lumix S9 Lumix S 26mm F8 Pancake Full Frame 26 mmf/8.0 3.0 m
∞
2.8 m Open →
Lumix GH7 Leica DG Summilux 25mm f/1.4 II Micro Four Thirds 25 mmf/1.4 2.5 m
0.74 m
29.8 m Open →
Lumix GH7 Leica DG Nocticron 42.5mm f/1.2 Micro Four Thirds 42.5 mmf/1.2 3.0 m
0.31 m
100.3 m Open →
OM-1 Mark II M.Zuiko Digital ED 20mm F1.4 PRO Micro Four Thirds 20 mmf/1.4 2.5 m
1.19 m
19.0 m Open →
OM-1 Mark II M.Zuiko Digital ED 45mm F1.2 PRO Micro Four Thirds 45 mmf/1.2 3.0 m
0.28 m
112.5 m Open →
OM-1 Mark II M.Zuiko 150-400mm F4.5 TC @ 300mm Micro Four Thirds 300 mmf/4.5 15.0 m
0.58 m
1333.3 m Open →
DJI Mavic 3 Pro Hasselblad L2D-20c 12.29mm Micro Four Thirds 12.3 mmf/2.8 10.0 m
∞
3.6 m Open →
DJI Air 3S 1-inch Wide Camera 8.8mm f/1.8 1-inch 8.8 mmf/1.8 10.0 m
∞
3.9 m Open →
iPhone 16 Pro Fusion 6.765mm f/1.78 1/1.28-inch 6.8 mmf/1.8 1.5 m
6.89 m
3.2 m Open →
12 of 122 optical benchmarks

Ricoh GR III / GR Lens 18.3mm f/2.8 — 18.3mm f/2.8

Pre-computed optical tables for Ricoh GR III (APS-C 28mm equiv) with GR Lens 18.3mm f/2.8 at 2m: Near limit 1.27 m, Far limit 4.73 m, Total DoF 3.46 m, Hyperfocal distance 5.98 m, and 65.4° Horizontal FoV.

Optical Formulas

Hyperfocal Distance H = f² / (N × c) + f
Near Focus Limit D_near = s(H − f) / (H + s − 2f)
Far Focus Limit D_far = s(H − f) / (H − s)
Angle of View AoV = 2 × arctan(d / 2f)

Frequently Asked Questions

What is the Depth of Field and Hyperfocal Distance for Ricoh GR III at 18.3mm f/2.8?

At 2.00m focus distance, the Ricoh GR III at 18.3mm f/2.8 produces an in-focus zone from 1.27 m to 4.73 m with a hyperfocal distance of 5.98 m.

How is Hyperfocal Distance calculated in photography?

Hyperfocal distance is calculated as H = f² / (N × c) + f, where f is focal length in millimeters, N is the aperture f-number, and c is the Circle of Confusion diameter in millimeters. Focusing at H keeps everything from H/2 to infinity acceptably sharp.

Why does sensor size affect Depth of Field and Equivalence?

To match the same Angle of View on a smaller sensor, you use a shorter focal length. Multiplying both focal length and f-stop by the sensor crop factor yields the 35mm equivalent focal length and equivalent aperture for Depth of Field.

How do Front and Rear Depth of Field split across distances?

At close portrait distances, Depth of Field splits nearly evenly around the focus plane. As focus distance approaches the hyperfocal distance, rear Depth of Field expands rapidly until reaching infinity.

What DPI is needed for gallery fine-art printing?

Museum and close-inspection prints target 240 to 300 DPI. Large wall prints viewed from 1.5 meters or more remain crisp at 150 to 180 DPI.