Any problem with 3rd party flash on Canon's DSLR?

billpepsi · 1st March 2005

Ideally, Canon DSLR should attached Canon Speedlite flash for optimal results. But what are the consequences if attach 3rd party flash such as Achiever 115A/S? Would there be constraints in the following issues (see below)?

1. Would flash X-Sync be limited to 1/60 sec?
2. Would flash compensation be disabled or non-functional?

mpenza · 1st March 2005

1. flash sync speed is that of the camera. doesn't depend on the flash.
2. there is no TTL with a 3rd party flash like Achiever 115A/S and hence no flash compensation can be achieved via the normal flash compensation way. but you could vary the aperture settings to have flash exposure compensation.

Snowcrash · 1st March 2005

Originally Posted by jeffhiew

Ideally, Canon DSLR should attached Canon Speedlite flash for optimal results. But what are the consequences if attach 3rd party flash such as Achiever 115A/S? Would there be constraints in the following issues (see below)?

1. Would flash X-Sync be limited to 1/60 sec?
2. Would flash compensation be disabled or non-functional?

1) No
2) no flash compensation with achiever 115A/S (have it own sensor?)

scud · 1st March 2005

buy canon flash and no need to worry abt the above problems.

Goldenstars08 · 1st March 2005

I am using the Sigma 500DG Super on my 300D now. Good result.
Function similar to Canon 550EX. Can consider as only pay S$400 for new one.

1st March 2005	#1
billpepsi Member Join Date: Jan 2005 Location: The 3rd Rock Posts: 1,272	Any problem with 3rd party flash on Canon's DSLR? Ideally, Canon DSLR should attached Canon Speedlite flash for optimal results. But what are the consequences if attach 3rd party flash such as Achiever 115A/S? Would there be constraints in the following issues (see below)? 1. Would flash X-Sync be limited to 1/60 sec? 2. Would flash compensation be disabled or non-functional?

1st March 2005	#2
mpenza Moderator Join Date: Jan 2002 Location: New York City Posts: 13,397	1. flash sync speed is that of the camera. doesn't depend on the flash. 2. there is no TTL with a 3rd party flash like Achiever 115A/S and hence no flash compensation can be achieved via the normal flash compensation way. but you could vary the aperture settings to have flash exposure compensation.

1st March 2005	#4
scud Senior Member Join Date: Jul 2003 Location: Singapore Posts: 1,701	buy canon flash and no need to worry abt the above problems.

1st March 2005	#5
Goldenstars08 Member Join Date: Nov 2004 Location: Singapore Posts: 1,139	I am using the Sigma 500DG Super on my 300D now. Good result. Function similar to Canon 550EX. Can consider as only pay S$400 for new one.