Also Looking Great: First Looks at Canon RF 400mm F2.8 L IS USM Lens Image Quality

Image quality test results have been added to the Canon RF 400mm F2.8 L IS USM Lens Review.

Like its RF 600mm counterpart and as expected, this lens turns in outstanding results.

Despite the Canon RF 400mm F2.8 L IS USM Lens and Canon EF 400mm f/2.8L IS III USM Lens being nearly identical, including a shared optical design, one opportunity for the RF 400 to differentiate itself was optical performance with extenders. More specifically, RF extenders vs. EF extenders.

Here is that comparison.

There is some improvement with the RF extenders in place, and the 1.4x comparison at f/4.5 shows slightly more improvement.

Can the RF 400mm F2.8 lens and 1.4x extender substitute for an RF 600mm F4? Perhaps. Keeping in mind that 560mm is not 600mm, check out the Canon RF 400mm F2.8 L IS USM Lens vs. Canon RF 600mm F4 L IS USM Lens comparison. Then remember that the 600mm lens does not have f/2.8 available.

Additional comparisons:

Canon RF 400mm F2.8 L IS USM Lens compared to Canon EF 400mm f/2.8L IS II USM Lens. Don't miss the with extenders comparison.

Canon RF 400mm F2.8 L IS USM Lens compared to Sony FE 400mm f/2.8 GM OSS Lens

The Canon RF 400mm F2.8 L IS USM Lens is available for order at B&H | Adorama | Canon USA | Amazon USA | WEX

Rent the Canon RF 400mm F2.8 L IS USM Lens from Lensrentals.

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Posted: 8/3/2021 9:22:28 AM CT   Posted By: Bryan
Posted to: Canon News    Category: Camera Gear Review News
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