Tests :: Hot shoe flashes (Speedlights)

The purpose of this article is to compare overheating protection (thermal cut-out) features of Nikon Speedlight SB-700 and Nikon Speedlight SB-900. Both flashes are capable of halting the operation in cases when the internal temperature reaches the levels that can cause damage. So, the idea is to see what it takes to make the thermal cut-out to kick in...
 Nikon 
This review contains test images taken with Metz Mecablitz 58 AF-1 showing direct flash frame coverage and built-in white card frame coverage. There is also and number of images to show how much light is "spilled" off to the sides of the Metz flash head...
 Metz 
In this review, we demostrate several features of Metz Mecablitz 58 AF-1 flash, including the secondary reflector (wink light), built-in catchlight card, and the extended zoom mode...
 Metz 
The purpose of this review is to show the frame coverage of Canon Speedlite 580EX II flash in various applications. The fist test demonstrates the "direct" frame coverage by shooting an indexed wall, which allows seeing the actual angle of view at the different flash zoom settings...
 Canon