Full Specifications
| Focal Length | 400mm |
| Maximum Aperture | f/2.8 |
| Minimum Aperture | f/32 |
| Lens Mount | RF |
| Optical Stabilization | Yes |
| Autofocus Motor | USM |
| Filter Size | 52mm |
| Minimum Focus Distance | 2.5m |
| Dimensions | 162 x 365 mm |
What Users Think
Pros
- Lightweight design compared to previous versions, making it easier to handle over long periods.
- Exceptional sharpness and image quality even at wide apertures, with multiple users confirming its superiority over older models.
- Flexible use with teleconverters, maintaining good image quality when attached.
- Fast autofocus performance and reliability, especially when coupled with the newer RF bodies.
- Great for wildlife and sports photography due to its reach and low-light capabilities.
Cons
- High price point, making it a significant investment for many photographers.
- Some users noted that the 2x teleconverter reduces image quality and autofocus speed.
- The lens can still be heavy and cumbersome despite being lighter than previous versions, which might limit casual use.
- Limited availability of support and parts for older versions compared to newer models.
Community Verdict
The Canon RF 400mm f/2.8L IS USM is highly regarded for its exceptional sharpness, lightweight design, and versatility with teleconverters, making it an ideal choice for wildlife and sports photography. However, its high price and weight concerns are notable drawbacks, indicating that while the lens excels in performance, it remains a significant investment.
"{'text': 'The weight is acceptable when used with the R5 Mk2, especially for the aperture you get.', 'context': 'User sharing their experience with the RF 400mm lens in a Reddit post about new gear.'}"
- Reddit user
"{'text': "I've now decided to buy it, and I currently feel like I've chosen the right focal length.", 'context': 'User discussing their decision process in choosing the RF 400mm over other lenses.'}"
- Reddit user
"{'text': "The 2x sucks. Sorry, it does. I'd rather just crop at that point.", 'context': 'User expressing dissatisfaction with the performance of the 2x teleconverter in a thread discussing lens capabilities.'}"
- Reddit user
Want the Full Story?
Read our comprehensive review covering optical quality, sharpness, bokeh, autofocus performance, build quality, and more.
Read Full ReviewPairs Well With
Camera bodies compatible with the RF mount
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