When you consider that mf lenses translate to roughly half of 35mm lenses' angle of view, a 250mm lens would be 125mm in 35. That's not much in the way of telephoto even though it's a lot of lens in size and weight. I use a 300mm for my P67, and don't think of it as a really long lens. The only ones bigger for that system are 400 and 800...HUGE lenses, but just 200 and 400 mm's in pulling power compared to 35mm. Get the 250!