09-15-2010, 12:32 PM
The C70-200/4 is hardly comparable to the P60-250/4. If so you may also argue that it makes sense to compare it to the Sigma 100-300/4 which has almost the double weight. A reasonable comparison may be the 70-300L which is just as heavy - actually slightly heavier if you don't count the tripod mount of the P lens.
As far as the 55-250IS and 55-300VR is concerned - the valid counterpart is, of course, not the P60-250mm but the P55-300mm which sits in between the C and N lens.
There're a number of Pentax lenses which are not offered by the others.
50-135/2.8
10-17 Fisheye
17-70/4
And, of course, all the DA and DA* primes.
I think there's absolutely no doubt that Pentax has, by far, the best APS-C lineup out there. It's not even a close call. Full format lenses on APS-C DSLRs are always a compromise - at least in terms of size/weight.
As far as the 55-250IS and 55-300VR is concerned - the valid counterpart is, of course, not the P60-250mm but the P55-300mm which sits in between the C and N lens.
There're a number of Pentax lenses which are not offered by the others.
50-135/2.8
10-17 Fisheye
17-70/4
And, of course, all the DA and DA* primes.
I think there's absolutely no doubt that Pentax has, by far, the best APS-C lineup out there. It's not even a close call. Full format lenses on APS-C DSLRs are always a compromise - at least in terms of size/weight.