If i where you and you have the $$$.
I don't have any of those but why:
Is wider and have more reach
I had read from people that have it and the'r happy
I'm planning to buy a telephoto not to late and thst 50-500 is one of
my main target.
That's just my thought, so i please do more research and post your
shots don't matter wich you choose.
--
Misa
I have this lens (135-400) and like it a lot, but different strokes for different folks. The 50-500 is a big and heavy lens, the 135-400 is lighter and somewhat more portable. The reach of the 50-500 is formidable, there is no doubt, but the 135-400 is no slouch!
If you don't have a good solid tripod now, with either one, you need one. With the 135-400 you can get away without one up to about 250mm beyond which a tripod is necessary. It is lighter and easier to handhold. Because of it's weight (50-500) you need a tripod throughout it's entire reach.
If a reach of 400mm will do the 135-400 is the better alternative; if you need the extra reach, the 50-500 is the choice. The 135-400 is best stopped down on the tele end and the 50-500 has to be stopped down as well.
There is also a cost difference. Both are well regarded; your choice!
Ron
--
E-500, ZD14-45, ZD14-54, ZD40-150, FL-36, ZD50 f2, Sigma 135-400
'And it really doesn't matter if I'm wrong
I'm right
Where I belong I'm right
Where I belong.'
Lennon & McCartney