the tamron 70-300 works well.. so does the tamron tele 1.4..
the 70- 300 most definitely is not unusably bad.. its sharp at its full zoom and given reasonable light focuses well..
the 28 to 300 is okay but not as useable at the long end as the 70 to 300..
i cant comment on the pentax 200 plus tamron tele cos i havnt used the combination.. i am waiting for a sigma apo dg 70 to 300 to be delivered when it arrives i can make comparisons between the two third party mass market lenses..
the good 100d iso performance and sr makes these type lenses more usably than they are made out to be..
trog
ps.. my son started with the pentax kit lens plus the tamron 70 to 300.. the kits lens has been ebayed and replaced with a tamron 18 to 200..
when he tried my 18 to 200 he instantly said it take better pictures than the kit lens.. his chosen basic kit is 18 to 200 plus the cheapo tamron 70 to 300.. with a few old legacy primes thrown in.. he also has the 1.4 tamron tele..
Last edited by trog100; 12-13-2006 at 08:47 PM.