jitkiat said:I was in the similar situation b4 but decide to keep my 24-85, reasons are:
1. 85mm/4.5 and 135mm/5.6 is not a big difference.
2. IS is only useful when you are shooting with slow film/ISO can IS cannot stop
motion. IS on 28-135 is 1st generation IS. 2nd generation IS already out. You can always use a monopod to gain the extra 2-3 stops.
3. Optically not much difference between 24-85 and 28-135.
4. 24-85 is lighter, smaller, easier to handle.
5. The extra 4mm at the wide end is valuable. Just go and borrow a 28-135 and compare it at the wide end.
If you want to experience with a telephoto zoom, get a 2nd hand 80-200 4.5-5.6 super-light-weight pocket rocket at around SGD100 and try the range out first. You can always sell it off and buy the more expenstive 70-200 later.
this i have to agreed...the AF on 24-85 USM is much faster compared to a 28-135 IS USM....
the 4mm diff means a lot especially on a DSLR....
price is another factor... for a used 24-85 is around 350-450... wherelese a 28-135 is 600-750.... a bit too ex....