cameracomparison · 2-way
ZWO ASI533MM Pro vs ZWO ASI585MC Pro
ZWO
ASI533MM Pro
A strong fit for dedicated deep-sky imagers pairing with longer focal lengths where framing is tight.
ZWO
ASI585MC Pro
A strong fit for dedicated deep-sky imagers pairing with longer focal lengths where framing is tight.
Key differences
25% larger sensor
Larger pixels (3.76µm vs 2.9µm)
8% more resolution
Mono vs color
Specifications
| Specification | ZWO ASI533MM Pro | ZWO ASI585MC Pro |
|---|---|---|
| Sensor | ||
| Type | Dedicated Cooled | Dedicated Cooled |
| Sensor | Sony IMX533 | Sony IMX585 |
| Sensor tech | CMOS | CMOS |
| Format | 1-inch square | 1/1.2-inch |
| Sensor size | 11.3×11.3mm | 11.2×6.3mm |
| Diagonal | 16.0mm | 12.8mm |
| Pixel size | 3.76µm | 2.90µm |
| Resolution | 3008×3008 | 3840×2160 |
| Megapixels | 9.0MP | 8.3MP |
| Color | No | Yes |
| Cooling | ||
| Cooled | Yes | Yes |
| Performance | ||
| Full well | 50000e⁻ | 40000e⁻ |
| Peak QE | 91% | 91% |
Advantages of ZWO ASI533MM Pro
- Larger sensor (16mm vs 12.85mm diagonal) — wider field
- Larger pixels — better low-light per-pixel sensitivity
- Mono sensor — ideal for narrowband and LRGB
Advantages of ZWO ASI585MC Pro
- Finer sampling at 2.9µm pixels
- One-shot color — simpler workflow
Best for — ZWO ASI533MM Pro
- Longer focal lengths — tighter framing on small targets
- Well-sampled deep-sky at medium focal lengths
- Long-exposure deep-sky under any sky
- Narrowband and LRGB workflows
Best for — ZWO ASI585MC Pro
- Longer focal lengths — tighter framing on small targets
- Well-sampled deep-sky at medium focal lengths
- Long-exposure deep-sky under any sky
- One-shot color — quick results, less processing
ZWO ASI533MM Pro — typical FOV & scale
- On 250mm refractor (wide)FOV: 2.59° × 2.59°Scale: 3.10"/px
- On 800mm SCT reducerFOV: 0.81° × 0.81°Scale: 0.97"/px
- On 2000mm SCT nativeFOV: 0.32° × 0.32°Scale: 0.39"/px
ZWO ASI585MC Pro — typical FOV & scale
- On 250mm refractor (wide)FOV: 2.57° × 1.44°Scale: 2.39"/px
- On 800mm SCT reducerFOV: 0.80° × 0.45°Scale: 0.75"/px
- On 2000mm SCT nativeFOV: 0.32° × 0.18°Scale: 0.30"/px
ZWO ASI533MM Pro — recommended user
A strong fit for dedicated deep-sky imagers pairing with longer focal lengths where framing is tight.
ZWO ASI585MC Pro — recommended user
A strong fit for dedicated deep-sky imagers pairing with longer focal lengths where framing is tight.