cameracomparison · 2-way
ZWO ASI1600MM Pro vs Canon EOS 90D
ZWO
ASI1600MM Pro
A strong fit for dedicated deep-sky imagers pairing with a broad range of focal lengths.
Canon
EOS 90D
A strong fit for photographers stepping into astro pairing with a broad range of focal lengths.
Key differences
-17% larger sensor
Larger pixels (3.8µm vs 3.2µm)
-50% more resolution
Cooled sensor
Mono vs color
Specifications
| Specification | ZWO ASI1600MM Pro | Canon EOS 90D |
|---|---|---|
| Sensor | ||
| Type | Dedicated Cooled | dslr |
| Sensor | Panasonic MN34230 | Canon APS-C |
| Sensor tech | CMOS | CMOS |
| Format | 4/3" | APS-C |
| Sensor size | 17.7×13.4mm | 22.3×14.8mm |
| Diagonal | 22.2mm | 26.8mm |
| Pixel size | 3.80µm | 3.20µm |
| Resolution | 4656×3520 | 6960×4640 |
| Megapixels | 16.4MP | 32.5MP |
| Color | No | Yes |
| Cooling | ||
| Cooled | Yes | No |
| Performance | ||
| Full well | 20000e⁻ | — |
| Peak QE | 60% | — |
Advantages of ZWO ASI1600MM Pro
- Larger pixels — better low-light per-pixel sensitivity
- Regulated cooling for long exposures
- Mono sensor — ideal for narrowband and LRGB
Advantages of Canon EOS 90D
- Larger sensor (26.8mm vs 22.2mm diagonal) — wider field
- Finer sampling at 3.2µm pixels
- Higher resolution (32.5MP vs 16.4MP)
- One-shot color — simpler workflow
Best for — ZWO ASI1600MM Pro
- Balanced field for most refractors
- Well-sampled deep-sky at medium focal lengths
- Long-exposure deep-sky under any sky
- Narrowband and LRGB workflows
Best for — Canon EOS 90D
- Balanced field for most refractors
- Well-sampled deep-sky at medium focal lengths
- One-shot color — quick results, less processing
ZWO ASI1600MM Pro — typical FOV & scale
- On 250mm refractor (wide)FOV: 4.06° × 3.07°Scale: 3.14"/px
- On 800mm SCT reducerFOV: 1.27° × 0.96°Scale: 0.98"/px
- On 2000mm SCT nativeFOV: 0.51° × 0.38°Scale: 0.39"/px
Canon EOS 90D — typical FOV & scale
- On 250mm refractor (wide)FOV: 5.11° × 3.39°Scale: 2.64"/px
- On 800mm SCT reducerFOV: 1.60° × 1.06°Scale: 0.83"/px
- On 2000mm SCT nativeFOV: 0.64° × 0.42°Scale: 0.33"/px
ZWO ASI1600MM Pro — recommended user
A strong fit for dedicated deep-sky imagers pairing with a broad range of focal lengths.
Canon EOS 90D — recommended user
A strong fit for photographers stepping into astro pairing with a broad range of focal lengths.