could you help me decide on my next upgrade. I have my 2nd wedding in a few months and will have the money for 1 lens upgrade.
My current line up is
sigma 10-20
tamron 28-75 2.8
sigma 70-300 dg
canon 50 1.8
I'm thinking that altough the tamron might not be as good as the equivlant canon i think its a good enough lens for that range.
so i was thinking of parting with the sigma and canon and getting either
canon 70-300 is
canon 70-200 f4 is.
now the 70-300 is really the one that is in my price range, but if i had to I could stretch to the 70-200.
or totally different, I tend to use the tamron range mostly, so should I sell the tamron and get the canon 24-105 IS. I really do want a lens with IS as most the images that I dont keep are just slightly oof, so I think that IS would pull those in for me.
I will be using them with my 40d and 580ex.
Thanks in advance.



