Roundup: Ricoh GR IV DR Tests, Leica Deal, Canon Patents

Canon RF 14mm and 18mm f/1.4L patents are the only thing worth a second look here — ultra-fast wide primes at those focal lengths would be genuinely new territory for the RF system and worth watching. The Leica Noctilux $100 discount barely moves the needle on a $7k+ lens, and Ricoh GR IV dynamic range numbers confirm what most already suspected: it's solid but not class-leading.