Canon 300mm F2.8 RF Lens with Built-in 1.4X Teleconverter Rumors

[Gear Rumors Admin]

Here is the information from the patent:

• Focal length: 300.00
• F-value: 2.91
• Half angle of view: 4.12
• Image height: 21.64
• Total length: 320.00
• Back focus: 49.68

and with the built-in teleconverter engaged:

• Focal length: 420.00
• F-value: 4.12
• Half angle of view: 2.95
• Image height: 21.64
• Total length: 320.00
• Back focus: 49.68