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The Canon RF lens lineup will obviously include more affordable non-L options, and this patent shows Canon is working on such optical formulas.
The back focus on the RF 28mm f/1.8 is really short, which is quite interesting.
Canon RF 28mm f/1.8
- Focal length: 28.80mm
- F-number: 1.85
- Half angle of view: 36.91°
- Image height: 21.64mm
- Total lens length: 80.30mm
- BF: 7.00mm
Canon RF 50mm f/1.8
- Focal length: 48.50mm
- F-number: 1.85
- Half angle of view: 24.04°
- Image height: 21.64mm
- Total lens length: 95.00mm
- BF: 15.80mm
We had previously reported on the possibility of an RF 50mm f/1.8 IS coming sometime in 2019. With the coming IBIS in Canon mirrorless cameras, we may not see IS in these types of lenses to reduce size and weight.
