5D3 + AF assist beam = slower focus

[Carerra911]

Hello All,

While I am new on these forums I have been on the Canon Rumors Forums for a few years now, 

I really wanted to bring this too the attention of you and Canon as it is simply a highly important problem, those of you that don't know, the 5D3 suffers serious focus locking issues when a Canon speedite is attached in Low light, the AF assist beam causes lag with the AF from the 5D3, this makes it virtually impossible to achieve focus in low light when the speedlite is attached, I wanted to bring the topic to this forum, so I have pasted a link to all the discussion we have already had about this problem at Canon Rumors.com - see below

http://www.canonrumors.com/forum/index.php?topic=10275.0

Please help in letting Canon know this is a very serious problem and effects the cameras performance in most working environments when a speedlite is attached and working in low light, conferences, nightclub work, weddings etc, and can stop the photographer completing the job or task.

Regards

Louis

[digital]

Most people would never notice the light leakage But.. avoid 1 or 2 in the 6th digit of the serial number.

[glongstaff]

Cheers for that but it would quite difficult to do qhen ordering via online..

This is where we in the UK & Europe can get our savings as we feel the pricing by Canon  is 'ripping' us off and subsidising other markets.

[echelonphoto]

New post on AF on the canon rumor forum.

http://www.canonrumors.com/forum/index.php?topic=11851.0

[rkreutzer]

Nikon!

[glongstaff]

Have done the comparisons between Nikon and Canon....and 

1) Still prefer the reviews from various sources regarding the Canon

2) Have a few pieces of equipment that are for the Canon and would require a wholesale refit, which as you will appreciate then makes the savings via an upgrade path futile

[digital]

Yeah. No AF problems with the D800 and D4 

[glongstaff]

yes but have problems in other areas....moire, aliasing etc

[Carerra911]

Still no mention for a fix for April..

[DrFun]

I have been frustrated with this issue as well.

I had no issues with 580exII on Canon 7D using 17-55f2.8 IS

I have missed quite a few shots with 5D Mark III and 24-105 f4 IS using 580EXII due to focus lag when AF assist beam used. I recently purchased 600EX-RT due to claim of better 61 AF point assist. No difference, it still slow in auto focus. 

Then did a search and found this thread. This is a real issue for me As well as most other posters on this thread.

[echelonphoto]

Isn't it frustrating, though? You spend years perfecting your style and building your business...then you go the extra

step and spend the money on the latest equipment so you can even better your product....and poof!...you wind up

screwing up important images because the new equipment is worse than the old....then you go out and spend more

money on expensive accessories (flash) to hopefully recoup your composure and confidence and it falls flat anyway...

.........ARE YOU LISTENING ......CANON???......This isn't going to go away!!!