Originally posted by Wired but Pentax is known for being different. hence the 31, 43, 77. no one else has these.
Canikon both have a 135 f2.0 however
LIMITED line needs to keep the "odd" focal lengths.
We could have a D-FA* 85mm F/1.4 and a D-FA* 77mm F/1.8 Limited.
Bring back the A* 85mm and A* 135mm in modern D-FA* fashion, but keep the smaller and lighter F/1.8 Limited lenses. If they want more separation then make the 50mm & 85mm an F/1.2. The 85L is a core Canon professional lens. Ricoh would make a big statement with a couple of F/1.2 lenses. Firing a direct shot at Canon.
Professional grade D-FA* for speed (Aperture and AF). 24mm, 35mm, 50mm F/1.2, 85mm F/1.2, 135mm F/1.8, 200mm, 300mm, 400mm. (8 lenses)
Limited for build quality and compact size (F/1.8 or F/2) - don't sacrifice optical quality. There are only 3-4 Limited D-FA lenses to worry about.
D-FA for general photography. F/1.8 - F/2.8 primes with typical build quality.