gonzogolf wrote in post #17620827
Lots of people misinterpret the usual commemts about the 135 on a crop. Its not that its not a great lens on any camera, its that it becomes less useful on a crop it becomes lomger than most are comfortable with as a portrait lens, its relegated to outdoors use. If you need a mid tele prime its fantastic, its just that many peiple dont have a job for it
I don't know about that, I would suggest that on Crop it would do just about the same job as a 200mm (actually Eqv FoV as 216mm) would do on an FF.
Certainly as far as portraiture is concerned when shooting on a crop you would be looking to use the next widest of the "usual" focal lengths as you would on FF 35mm. On crop I would be looking for 30, 50, 85mm to fill the roles of the 50, 85, 135mm on FF. The I would be looking to 24mm to fill that wider environmental portrait slot, and the 135mm for the longer outdoor use that would normally take a 200mm lens. The only disadvantage of the crop camera is that the 135 f/2 is only going to approach the DoF of a 200 f/2.8. It also takes the 85 f/1.2 to match the DoF of the 135 f/2. Saying that, given just how narrow those DoF's can be I do not think that in practical terms you are going to lose as much as the DoF tables would suggest.