Canon RF 75-300mm F4-5.6

This Canon telephoto zoom fits full-frame RF-mount cameras. Its 75–300mm range suits wildlife, outdoor sport and distant landscape details. You can make a distant subject larger or leave more surroundings from one position. The short end also suits portraits when you have enough room.

Canon introduced the lens in 2025. The main trade-offs are light gathering and the lack of built-in stabilization. The maximum aperture narrows toward 300mm, so bright conditions help when you need a fast shutter speed.

The lens weighs 1 lb 1.9 oz (507 g) and measures 5.75 in (146.1 mm) long and 2.8 in (71.2 mm) across. Its size suits carrying a telephoto lens on a walk. Screw-in filters must match the 58mm thread to attach directly.

At 300mm, a distant bird or player appears larger than at 75mm from the same position. How much of the frame it fills still depends on distance. The shorter end includes more surroundings and helps you find action before tightening the framing.

The maximum aperture changes from f/4 at 75mm to f/5.6 at 300mm. In shade or fading evening light, you may need a higher ISO to retain enough shutter speed. A still subject gives more freedom to slow the shutter when the camera is steady.

Closest focus is 4.9 ft (150 cm), measured from the sensor. A subject nearer than this is too close to focus. Maximum magnification is 0.25x, useful for larger details. Check your position before settling beside a nearby flower or other small object.

At long settings, a nearby subject can have a soft background even at f/5.6. More space behind the subject helps that separation. Branches directly behind an animal can remain distracting. Moving to another viewpoint, where possible, can give it a clearer backdrop.

There is no image stabilization in the lens. At 300mm, small hand movements have a greater effect on the image. A camera with body stabilization can help with shake for still scenes. Firm support also helps when slow shutter speeds are needed. A moving subject still needs enough shutter speed for its movement.

The lens has no weather sealing. Protect it from rain and blowing dust outdoors, and keep the front and rear caps fitted when it is stored. Keep the camera connection clean when changing lenses.

The front glass lacks a fluorine coating, so it lacks that specific help with water and oily marks. Remove loose grit before wiping spots or fingerprints. There is no zoom lock switch.

The optical design uses 13 elements in 9 groups. It contains no aspherical or low-dispersion elements. Those counts describe the design and do not measure image quality. The manual rotary zoom ring changes framing by hand, which helps you adjust the composition as a scene develops.