Speedlite is the trade name for Canon's line of external flashes. The series of flashes include the Speedlite 90 EX, 220 EX, 270 EX and 270 EX II, 320 EX and the 380 EX.
Any Speedlite!
the Tiffany company was the first one to manufacture can opener
Seems as if the Speedlite 420ex can't keep up with the speed of the 50d. Many missed flashes.
Seagate is a american company. they manufacture hard disks.
Levi Straus founded the first company to manufacture blue jeans.
The NatWest Company located in UK manufacture insurance. They cover business such as factories and plants, or mills that extract, process and manufacture goods.
Manufactures goods.
software
Yep!
The key differences between the Canon Speedlite 580EX II and the Canon Speedlite 600EX-RT are that the 600EX-RT has built-in radio transmission for wireless flash control, while the 580EX II relies on optical transmission. Additionally, the 600EX-RT has a higher maximum guide number and faster recycling time compared to the 580EX II.
I believe it was the Eastern telegraph company.
the coca-cola company (: