wanting a zoom lense..

[Sontizzle]

looking at these 2 lenses

http://www.bhphotovideo.com/c/product/169269-GREY/Canon_6472A002_75_300mm_f_4_0_5_6_III_USM.html
and
http://www.bhphotovideo.com/c/produ...473A003_75_300mm_f_4_0_5_6_III_Autofocus.html

the first one is just an autofocus and the 2nd one is a USM autofocus. whats the difference and would either one of these be a good lense?

 

[usayit]

USM = UltraSonic Motor.

USM motor is faster and extremely quiet.

 

[Sontizzle]

after reading some reviews on both it seems they are pretty much junk and u get what u pay for. now im leaning towards the 70-200m F4 L USM AF lens. it cost alot more but id prolly be alot happier with it.

http://www.bhphotovideo.com/c/produ...200mm_f_4_0L_USM_Autofocus.html#goto_itemInfo

 

[DSLR noob]

you would be. I'm hoping to get the same lens myself.