Panasonic DC-G9M2: Crop Factor, NPF Rule & Hyperfocal Chart

Name: Panasonic DC-G9M2
Brand: Panasonic

The Panasonic DC-G9M2 uses the Micro 4/3 System mount with a 2.00× crop factor (about 17.3 × 13.0 mm sensor), 25.2 megapixels, announced in 2023. Below: equivalent focal lengths, maximum shutter speeds for sharp stars, a hyperfocal distance chart, compatible lenses and how to check the shutter count.

Mount

Micro 4/3 System

Crop factor

2.00×

Sensor (approx.)

17.3 × 13.0 mm

Resolution

25.2 MP

pixel pitch ≈ 2.99 µm

Announced

2023

Circle of confusion

0.015 mm

Equivalent focal length & field of view

Lens focal length	Full-frame equivalent	Diagonal FOV	Horizontal FOV
8 mm	16 mm	107.0°	94.5°
10 mm	20 mm	94.5°	81.7°
12 mm	24 mm	84.1°	71.6°
14 mm	28 mm	75.4°	63.4°
16 mm	32 mm	68.1°	56.8°
18 mm	36 mm	62.0°	51.3°
20 mm	40 mm	56.8°	46.8°
24 mm	48 mm	48.5°	39.6°
28 mm	56 mm	42.3°	34.3°
35 mm	70 mm	34.4°	27.8°
50 mm	100 mm	24.4°	19.6°
85 mm	170 mm	14.5°	11.6°
135 mm	270 mm	9.2°	7.3°
200 mm	400 mm	6.2°	5.0°
300 mm	600 mm	4.1°	3.3°
400 mm	800 mm	3.1°	2.5°

Multiply by the 2.00× crop factor for the full-frame equivalent field of view.

Milky Way exposure: NPF and 500 rule

Focal length	NPF @ f/1.8	NPF @ f/2.8	Strict NPF @ f/2.8	500 rule
8 mm	19.1 s	23.5 s	12.7 s	31.2 s
10 mm	15.3 s	18.8 s	10.2 s	25.0 s
12 mm	12.7 s	15.6 s	8.5 s	20.8 s
14 mm	10.9 s	13.4 s	7.3 s	17.9 s
16 mm	9.5 s	11.7 s	6.4 s	15.6 s
18 mm	8.5 s	10.4 s	5.7 s	13.9 s
20 mm	7.6 s	9.4 s	5.2 s	12.5 s
24 mm	6.4 s	7.8 s	4.3 s	10.4 s
28 mm	5.5 s	6.7 s	3.7 s	8.9 s
35 mm	4.4 s	5.4 s	3.0 s	7.1 s

NPF = (35 × f-number + 30 × pixel pitch) ÷ focal length, with a pixel pitch of 2.99 µm (from 25.2 MP). The strict version (Michaud's detailed NPF for the galactic core) gives pin-point stars at 100% view; the 500 rule is a loose rule of thumb that shows trailing on modern sensors.

Hyperfocal distance chart

Focal length	f/2.8	f/5.6	f/8	f/11	f/16
10 mm	2.4 m	1.2 m	0.8 m	0.6 m	0.4 m
14 mm	4.7 m	2.3 m	1.6 m	1.2 m	0.8 m
16 mm	6.1 m	3.1 m	2.1 m	1.6 m	1.1 m
18 mm	7.7 m	3.9 m	2.7 m	2.0 m	1.4 m
20 mm	9.5 m	4.8 m	3.4 m	2.4 m	1.7 m
24 mm	14 m	6.9 m	4.8 m	3.5 m	2.4 m
28 mm	19 m	9.4 m	6.6 m	4.8 m	3.3 m
35 mm	29 m	15 m	10 m	7.5 m	5.1 m

Focus at the hyperfocal distance and everything from half that distance to infinity is acceptably sharp (circle of confusion 0.015 mm). Use the hyperfocal calculator for other settings.

Maximum print size

Print resolution	Inches	Centimeters
150 ppi	38.6 × 29.0 in	98 × 74 cm
200 ppi	29.0 × 21.7 in	74 × 55 cm
240 ppi	24.1 × 18.1 in	61 × 46 cm
300 ppi	19.3 × 14.5 in	49 × 37 cm

300 ppi suits close viewing; 150–200 ppi is plenty for large prints viewed from a distance.

Compatible lenses (120 in our database)

Lens	Focal length	Max aperture	Mount
Panasonic Lumix G Vario 7-14mm f/4.0 Asph.	7–14 mm	f/4	Micro 4/3 System
Panasonic Leica DG Vario-Elmarit 8-18mm f/2.8-4 Asph.	8–18 mm	f/2.8	Micro 4/3 System
Panasonic Leica DG Summilux 9mm f/1.7 Asph.	9 mm	f/1.7	Micro 4/3 System
Panasonic Leica DG Vario-Summilux 10-25mm f/1.7 Asph.	10–25 mm	f/1.7	Micro 4/3 System
Panasonic Lumix G Vario 12-60mm f/3.5-5.6 Asph. Power OIS	12–60 mm	f/3.5	Micro 4/3 System
Panasonic Lumix G X Vario 12-35mm f/2.8 Asph. Power OIS	12–35 mm	f/2.8	Micro 4/3 System
Panasonic Lumix G X Vario 12-35mm f/2.8 II Asph. Power OIS	12–35 mm	f/2.8	Micro 4/3 System
Panasonic Lumix G Vario 12-32mm f/3.5-5.6 Asph. Mega OIS	12–32 mm	f/3.5	Micro 4/3 System
Panasonic Leica DG Vario-Elmarit 12-60mm f/2.8-4.0 Asph. Power OIS	12–60 mm	f/2.8	Micro 4/3 System
Panasonic Lumix G 14mm f/2.5 Asph.	14 mm	f/2.5	Micro 4/3 System
Panasonic Lumix G 14mm f/2.5 Asph. + GWC1 0.79×	14 mm	f/2.5	Micro 4/3 System
Panasonic Lumix G X Vario PZ 14-42mm f/3.5-5.6 Asph. Power OIS	14–42 mm	f/3.5	Micro 4/3 System
Panasonic Lumix G Vario 14-42mm f/3.5-5.6 II Asph. Mega OIS	14–42 mm	f/3.5	Micro 4/3 System
Panasonic Lumix G X Vario PZ 14-42mm f/3.5-5.6 Asph. Power OIS + GWC1 0.79×	14–42 mm	f/3.5	Micro 4/3 System
Panasonic Lumix G Vario 14-45mm f/3.5-5.6 Asph. Mega OIS	14–45 mm	f/3.5	Micro 4/3 System
Panasonic Lumix G Vario HD 14-140mm f/4.0-5.8 Asph. Mega OIS	14–140 mm	f/4	Micro 4/3 System
Panasonic Lumix G 14mm f/2.5 II Asph.	14 mm	f/2.5	Micro 4/3 System
Panasonic Lumix G Vario 14-140mm f/3.5-5.6 Asph. Power OIS	14–140 mm	f/3.5	Micro 4/3 System
Panasonic Lumix G Vario 14-140mm f/3.5-5.6 Asph. II Power OIS	14–140 mm	f/3.5	Micro 4/3 System
Panasonic Leica DG Summilux 15mm f/1.7 Asph.	15 mm	f/1.7	Micro 4/3 System
Panasonic Lumix G 20mm f/1.7 Asph.	20 mm	f/1.7	Micro 4/3 System
Panasonic Lumix G 20mm f/1.7 II Asph.	20 mm	f/1.7	Micro 4/3 System
Panasonic Leica DG Summilux 25mm f/1.4 Asph.	25 mm	f/1.4	Micro 4/3 System
Panasonic Leica DG Summilux 25mm f/1.4 II	25 mm	f/1.4	Micro 4/3 System
Panasonic Lumix G 25mm f/1.7 Asph.	25 mm	f/1.7	Micro 4/3 System
Panasonic Leica D Summilux 25mm f/1.4 Asph.	25 mm	f/1.4	Micro 4/3 System
Panasonic Lumix G Macro 30mm f/2.8 Asph. Mega OIS	30 mm	f/2.8	Micro 4/3 System
Panasonic Lumix G X Vario 35-100mm f/2.8 Power OIS	35–100 mm	f/2.8	Micro 4/3 System
Panasonic Lumix G X Vario 35-100mm f/2.8 II Power OIS	35–100 mm	f/2.8	Micro 4/3 System
Panasonic Lumix G Vario 35-100mm f/4.0-5.6 Asph. Mega OIS	35–100 mm	f/4	Micro 4/3 System
Panasonic Leica DG Nocticron 42.5mm f/1.2 Asph. Power OIS	42 mm	f/1.2	Micro 4/3 System
Panasonic Lumix G 42.5mm f/1.7 Asph. Power OIS	42 mm	f/1.7	Micro 4/3 System
Panasonic Lumix G Vario 45-200mm f/4.0-5.6 Mega OIS	45–200 mm	f/4	Micro 4/3 System
Panasonic Lumix G Vario 45-200mm f/4.0-5.6 II Power OIS	45–200 mm	f/4	Micro 4/3 System
Panasonic Lumix G Vario 45-150mm f/4.0-5.6 Asph. Mega OIS	45–150 mm	f/4	Micro 4/3 System
Panasonic Leica DG Macro-Elmarit 45mm f/2.8 Asph. Mega OIS	45 mm	f/2.8	Micro 4/3 System
Panasonic Lumix G X Vario PZ 45-175mm f/4.0-5.6 Asph. Power OIS	45–175 mm	f/4	Micro 4/3 System
Panasonic Leica DG Vario-Elmarit 50-200mm f/2.8-4 Asph. OIS	50–200 mm	f/2.8	Micro 4/3 System
Panasonic Lumix G Vario 100-300mm f/4.0-5.6 Mega OIS	100–300 mm	f/4	Micro 4/3 System
Panasonic Lumix G Vario 100-300mm f/4-5.6 II Power OIS	100–300 mm	f/4	Micro 4/3 System

Native and adapter-free compatible lenses from the Lensfun database. Third-party and adapted lenses may also work.

How to check the Panasonic DC-G9M2 shutter count

Panasonic Lumix cameras show a shutter counter in a hidden service menu on many models; EXIF tools rarely expose it.

ExifTool tag: (service menu). Always test an original, unedited file straight from the card.

Where to buy

Compare new and used prices at these retailers:

B&H Photo Amazon KEH (used)MPB (used)

Other Micro 4/3 System cameras

FAQ

What is the crop factor of the Panasonic DC-G9M2?

2.00×. A 24 mm lens frames like a 48 mm lens on full frame.

What shutter speed should I use for the Milky Way with the Panasonic DC-G9M2?

With a 8 mm lens at f/2.8, about 23 seconds keeps stars sharp (NPF rule).

How do I check the shutter count on the Panasonic DC-G9M2?

Panasonic Lumix cameras show a shutter counter in a hidden service menu on many models; EXIF tools rarely expose it.

Which lenses fit the Panasonic DC-G9M2?

Lenses for the Micro 4/3 System mount — 120 are listed above.