wanna check with you all about extenders?
i was looking at the canon 1.4x II extender, and i was thinking how does it work?
do i just attach it to the front of the lens and have my focal length extended by 1.4 times?
and if i'm using a dslr of 1.6 crop, does it mean that i will double my focal length???
and will using a extender decrease the lens IQ? or increase vigineting?
thanks alot guys!