Sigma 150 - 500 or 50 - 500

[Tizianohc]

hey guys,
I use a Canon 550D but plan on getting a sigma lens....
what would you recommend (so far i have the kit lens 18 - 55) and need a strong lens for bird and wildlife shots....
people have recommended the 50 - 500 but i havent had the chance to try it yet (i tried the 150 - 500) is one better than the other?

second question... i saw a picture someone took of the moon using the 50 - 500 with a 2X teleconverter to get it to 1000mm.... would this seriously decrease the quality?

[NHL]

I shoot with the 50-500, highly recommended:
A day @ the beach...

I like the 10x range as from the kayak I don't really want to change lens, and sometime I can get by with the 50mm for landscape...

[Tizianohc]

Thanks for the info... i've been pretty unsure on whether or not to get it.... but there are no real alternatives....
do you have the old or new model?

[NHL]

The old model
-> the alternative is the Tamron 200-500 which is sharper bu not as fast in focus

[penolta]

Originally Posted by Tizianohc

hey guys,
people have recommended the 50 - 500 but i havent had the chance to try it yet (i tried the 150 - 500) is one better than the other?

Was the 150 - 500 you tried the early model or the DG? The early 135-400 had the reputation of being poorly damped for lens creep and sliding freely when pointed downwards - how was the 150-500 you tried in that regard?

[Magnet]

Hi pal..
This photo is taken by one of my friends on net using this len


and these were by me..