Canon speedlite 420ex work with pentax k20d?
well if the camera lens is not droped and kept in good condition 25-35 years
Will a canon speedlite 420ex flash work on 50d?
Seems as if the Speedlite 420ex can't keep up with the speed of the 50d. Many missed flashes.
Will a Canon Speedlite 420EX work on a Rebel T3?
Will a canon speedlite 420ex flash work on a rebel XTI camera?
Yes, it should work just fine, and is an excellent choice. It's almost as powerful as the 430ex, and noticeably lighter.
Can you use Canon speedlite 420ex with a Canon EOS 30D camera?
Yes, you can. It has a Hot Shoe Mount.