50 mm or 40 mm

[Busted Knuckles]

Thanks guys. Now for flash questions. Canon speedlite is almost 300$ here but walmart has an off brand for 60$ . i think its made by sunpak . is the canon flash worh the extra cash ?

I know it is heresy - Yongnuo 565ex - Should be $150 or so - it has lots-o-power and features - can be slaved by onboard flash - the only thing it cannot do is be a master.

There was some build issues with the first, but mine has worked great. I use on my T3i and 5dIII