A patent application covering two optical formulas for both a full frame and APS-C superzoom have surfaced in Japan. Full Frame: 28-550mm f/3. 5-6. 3 APS-C: 15-300 f/3. 5-6. 3 I think it’s more likely that we see a replacement for the EF-S 18-200mm f/3.
5-5. 6 IS than a superzoom like this for a full frame DSLR. Though these formulas could Read more. . . . canonrumors.com