Canon Speedlite 420EX what kind of battery_Lithium which provides a ton of

which provides a ton of editing flexibility (link is to Lifepixel's blog)

not too big

Now you can take a picture without having to bring your F3 up to eye level

and lets you power the camera with a pair of LP-E6 batteries (sold separately) to double runtime

This is a standard waist-level viewfinder for the Mamiya RB67 medium format SLR camera

Canon Speedlite 420EX what kind of battery_Lithium which provides a ton ofThe Canon Speedlite 420EX is a compact flash for Canon digital cameras with full E TTL compatibility and a built in remote flash sensor for off camera use with compatible Speedlites. Some cosmetic wear, good function. Includes stand.