[iwkwong]

hello every body,
i want to buy a "white lens" and i think the price of 70-200 f4 is better for me but i heard some user said that the focus of this lens is not very good!! "shift a bit forward'"
so did any one have this problems?
and do anyone have cooment on the focusing performance of the 70-200 f2.8 or the new 70-300 do lens?
thanks!
besides, i go to monkwok this evening and saw many people buying 20D ar!!!wowowow "i owned the 20D also" and very exciting!

[iwkwong]

P.S. the focusing problems is on using 20D!!

[patwong]

i took the 70-200 f/2.8 to canon,
they told me the design of 70-200 f/4 , f/2.8 also have same problem, i.e. the focus does not match DSLR system.

they said they cannot tune for you.
and after few times complain, they said they can change parts for me. but need long long time....

[iwkwong]

then how about the 70-200 f2.8 is ar?
then what lens can i buy >_<
or is the 70-300 do is better for my 20D?
very disappointed can't use the "white lens" ar!!!!!!

[fycheung]

My 70-200 F4 doen't have the focus problem.

[nicktws]

Just bring your Camera and test immediately in the shop before payment, even the same model of lens and body would have different result.

I don't have problem with my 70-200 f2.8

[patwong]

my 70-200 f/2.8 plug to my 10D and my friend's 20D also got focus problem, mainly on 70 side.
and his 70-200 f/4 plug to his 20D got same situation.

And after go to Canon, they told me, some lens got problems and some not. And cannot be tuned since 70-200 designed only to tune to one side only (either 70 or 200)
if you want to tune it normal, u need to change some elements (not lens, mechanical parts only) to allow such things...
i don't understand, but i can only let it be.........................

[Admin]

本人的70-200 F4 有此 focus problem,聽說 Canon可以調較,但是否一定要和機身一起調較,如只send 鏡頭去調較,可以嗎?

[iwkwong]

oh!!
that mean the problem is form the lens not the 20D?
and do this happen using on film camera?
and any user brought the 70-300 Do lens?
is it worth to buy for 20D?