Canon RF 100-400mm F5.6-8 IS USM vs Canon RF 75-300mm F4-5.6
Key differences
- —The RF 75-300mm F4-5.6 is 128g lighter (507g vs 635g).
- —The RF 75-300mm F4-5.6 is faster: f/4 vs f/5.6 (≈1.0 stops more light).
- —At launch the RF 75-300mm F4-5.6 cost $430 less ($219 vs $649).
- —For close-ups the RF 100-400mm F5.6-8 IS USM reaches 0.41× vs 0.25×.
- Mount
- Canon RF
- Canon RF
- Focal length
- 100–400mm
- 75–300mm
- Max aperture
- F5.6–8
- F4–5.6◆
- Weight
- 635g
- 507g◆
- Dimensions ⌀ × L
- 79.5 × 164.7mm
- 71.2 × 146.1mm
- Volume
- 818 cm³
- 582 cm³◆
- Density
- 0.78 g/cm³
- 0.87 g/cm³
- Filter thread
- ⌀67mm
- ⌀58mm
- Min focus
- 0.88m◆
- 1.50m
- Max magnification
- 0.41×◆
- 0.25×
- Elements / groups
- 12 / 9
- 13 / 9
- Aperture blades
- 9◆
- 7
- Focus drive
- Nano USM
- DC Motor
- Stabilisation
- Yes
- —
- Weather sealed
- —
- —
- Aperture ring
- —
- —
- Released
- 2021
- 2025
- MSRP (USD)
- $649
- $219◆
- Sharpness
- 7.6◆
- 6.0
- Bokeh Rendering
- 6.4
- 6.5◆
- Autofocus Speed
- 8.0◆
- 5.6
- Flare Resistance
- 7.8◆
- 6.3
- Build / Sealing
- 6.8◆
- 5.8
- Value / Size
- 9.3◆
- 7.8
Performance overlay
- RF 100-400mm F5.6-8 IS USM
- RF 75-300mm F4-5.6
◆ marks the best value in a row. Scores are 0–10 editorial ratings.