Samsung NX300: Crop Factor, NPF Rule & Hyperfocal Chart

Name: Samsung NX300
Brand: Samsung

The Samsung NX300 uses the Samsung NX mount with a 1.53× crop factor (about 23.5 × 15.7 mm sensor). Below: equivalent focal lengths, maximum shutter speeds for sharp stars, a hyperfocal distance chart, compatible lenses and how to check the shutter count.

Mount

Samsung NX

Crop factor

1.53×

Sensor (approx.)

23.5 × 15.7 mm

Circle of confusion

0.0196 mm

Equivalent focal length & field of view

Lens focal length	Full-frame equivalent	Diagonal FOV	Horizontal FOV
8 mm	12 mm	121.0°	111.5°
10 mm	15 mm	109.4°	99.2°
12 mm	18 mm	99.3°	88.8°
14 mm	21 mm	90.5°	80.0°
16 mm	24 mm	82.9°	72.6°
18 mm	28 mm	76.3°	66.3°
20 mm	31 mm	70.5°	60.9°
24 mm	37 mm	61.0°	52.2°
28 mm	43 mm	53.6°	45.5°
35 mm	54 mm	44.0°	37.1°
50 mm	77 mm	31.6°	26.4°
85 mm	130 mm	18.9°	15.7°
135 mm	207 mm	12.0°	9.9°
200 mm	306 mm	8.1°	6.7°
300 mm	459 mm	5.4°	4.5°
400 mm	612 mm	4.0°	3.4°

Multiply by the 1.53× 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	22.5 s	26.9 s	14.5 s	40.8 s
10 mm	18.0 s	21.5 s	11.6 s	32.7 s
12 mm	15.0 s	17.9 s	9.7 s	27.2 s
14 mm	12.9 s	15.4 s	8.3 s	23.3 s
16 mm	11.2 s	13.4 s	7.3 s	20.4 s
18 mm	10.0 s	11.9 s	6.5 s	18.1 s
20 mm	9.0 s	10.8 s	5.9 s	16.3 s
24 mm	7.5 s	9.0 s	4.9 s	13.6 s
28 mm	6.4 s	7.7 s	4.2 s	11.7 s
35 mm	5.1 s	6.1 s	3.4 s	9.3 s

NPF = (35 × f-number + 30 × pixel pitch) ÷ focal length, with a pixel pitch of 3.9 µm (typical for this format — exact resolution not in our database). 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	1.8 m	0.9 m	0.6 m	0.5 m	0.3 m
14 mm	3.6 m	1.8 m	1.3 m	0.9 m	0.6 m
16 mm	4.7 m	2.3 m	1.6 m	1.2 m	0.8 m
18 mm	5.9 m	3.0 m	2.1 m	1.5 m	1.1 m
20 mm	7.3 m	3.7 m	2.6 m	1.9 m	1.3 m
24 mm	11 m	5.3 m	3.7 m	2.7 m	1.9 m
28 mm	14 m	7.2 m	5.0 m	3.7 m	2.5 m
35 mm	22 m	11 m	7.8 m	5.7 m	3.9 m
50 mm	46 m	23 m	16 m	12 m	8.0 m

Focus at the hyperfocal distance and everything from half that distance to infinity is acceptably sharp (circle of confusion 0.0196 mm). Use the hyperfocal calculator for other settings.

Compatible lenses (21 in our database)

Lens	Focal length	Max aperture	Mount
Samsung NX 10mm f/3.5 Fisheye	10 mm	f/3.5	Samsung NX
Samsung NX 16mm f/2.4 Pancake	16 mm	f/2.4	Samsung NX
Samsung NX 16-50mm f/3.5-5.6 PZ ED OIS	16–50 mm	f/3.5	Samsung NX
Samsung NX 16-50mm f/2-2.8 S	16–50 mm	f/2	Samsung NX
Samsung NX 18-55mm f/3.5-5.6 OIS	18–55 mm	f/3.5	Samsung NX
Samsung NX 20-50mm f/3.5-5.6 ED	20–50 mm	f/3.5	Samsung NX
Samsung NX 20mm f/2.8 Pancake	20 mm	f/2.8	Samsung NX
Samsung NX 30mm f/2 Pancake	30 mm	f/2	Samsung NX
Samsung NX 45mm f/1.8 2D/3D	45 mm	f/1.8	Samsung NX
Samsung NX 50-200mm f/4-5.6	50–200 mm	f/4	Samsung NX
Samsung NX 50-150mm F2.8 S	50–150 mm	f/2.8	Samsung NX
Samyang 8mm f/2.8 UMC Fish-eye	8 mm	f/2.8	Sony E, Fujifilm X
Samyang 8mm f/3.5 Fish-Eye CS	8 mm	f/3.5	Pentax KAF, Canon EF
Samyang 10mm f/2.8 ED AS NCS CS	10 mm	f/2.8	Canon EF, Canon EF-M
Samyang 12mm f/2.0 NCS CS	12 mm	f/2	Sony E, Fujifilm X
Samyang 14mm f/2.8 AE ED AS IF UMC	14 mm	f/2.8	Pentax KAF, Canon EF
Samyang 16mm f/2.0 ED AS UMC CS	16 mm	f/2	Nikon F AF, Canon EF
Samyang 20mm f/1.8 ED AS UMC	20 mm	f/1.8	Pentax K, Canon EF
Samyang 24mm f/1.4 ED AS IF UMC	24 mm	f/1.4	Canon EF, Sony E
Samyang 85mm f/1.4 IF UMC Aspherical	85 mm	f/1.4	Canon EF, Canon EF-M
Samyang 135mm f/2 ED UMC	135 mm	f/2	Nikon F, Canon EF

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

How to check the Samsung NX300 shutter count

Not every maker writes a shutter count into image files. Try `exiftool -a -G1 -s image` on an unedited original and look for a tag containing "Shutter" or "Count".

ExifTool tag: (varies). 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 Samsung NX cameras

FAQ

What is the crop factor of the Samsung NX300?

1.53×. A 24 mm lens frames like a 37 mm lens on full frame.

What shutter speed should I use for the Milky Way with the Samsung NX300?

With a 8 mm lens at f/2.8, about 27 seconds keeps stars sharp (NPF rule).

How do I check the shutter count on the Samsung NX300?

Not every maker writes a shutter count into image files. Try `exiftool -a -G1 -s image` on an unedited original and look for a tag containing "Shutter" or "Count".

Which lenses fit the Samsung NX300?

Lenses for the Samsung NX mount — 21 are listed above.