cameracomparison · 2-way
Sony A7S III vs ZWO ASI2400MM Pro
Key differences
Larger pixels (8.4µm vs 5.94µm)
-51% more resolution
Uncooled
Color vs mono
Specifications
| Specification | Sony A7S III | ZWO ASI2400MM Pro |
|---|---|---|
| Sensor | ||
| Type | dslr | Dedicated Cooled |
| Sensor | Sony FF BSI | Sony IMX410 |
| Sensor tech | CMOS | CMOS |
| Format | Full frame | Full Frame |
| Sensor size | 35.6×23.8mm | 36.0×24.0mm |
| Diagonal | 42.8mm | 43.3mm |
| Pixel size | 8.40µm | 5.94µm |
| Resolution | 4240×2832 | 6072×4042 |
| Megapixels | 12.1MP | 24.5MP |
| Color | Yes | No |
| Cooling | ||
| Cooled | No | Yes |
| Performance | ||
| Full well | — | 100000e⁻ |
| Peak QE | — | 80% |
Advantages of Sony A7S III
- Larger pixels — better low-light per-pixel sensitivity
- One-shot color — simpler workflow
Advantages of ZWO ASI2400MM Pro
- Finer sampling at 5.94µm pixels
- Higher resolution (24.5MP vs 12.1MP)
- Regulated cooling for long exposures
- Mono sensor — ideal for narrowband and LRGB
Best for — Sony A7S III
- Wide-field mosaics and full-frame telescopes
- Fast, low-noise deep-sky at short focal lengths
- One-shot color — quick results, less processing
Best for — ZWO ASI2400MM Pro
- Wide-field mosaics and full-frame telescopes
- Fast, low-noise deep-sky at short focal lengths
- Long-exposure deep-sky under any sky
- Narrowband and LRGB workflows
Sony A7S III — typical FOV & scale
- On 250mm refractor (wide)FOV: 8.16° × 5.45°Scale: 6.93"/px
- On 800mm SCT reducerFOV: 2.55° × 1.70°Scale: 2.17"/px
- On 2000mm SCT nativeFOV: 1.02° × 0.68°Scale: 0.87"/px
ZWO ASI2400MM Pro — typical FOV & scale
- On 250mm refractor (wide)FOV: 8.25° × 5.50°Scale: 4.90"/px
- On 800mm SCT reducerFOV: 2.58° × 1.72°Scale: 1.53"/px
- On 2000mm SCT nativeFOV: 1.03° × 0.69°Scale: 0.61"/px
Sony A7S III — recommended user
A strong fit for photographers stepping into astro pairing with wide-field refractors.
ZWO ASI2400MM Pro — recommended user
A strong fit for dedicated deep-sky imagers pairing with wide-field refractors.