« on: February 06, 2013, 05:17:01 PM »
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I'm not so impressed when it comes to low light focusing. The 5D2 still does faster.I am sure this has been discussed before but I just can't figure out why the 5D3 focuses so slowly when the AF assist is enabled on my flash. Many times I have been at a wedding reception and I get frustrated with very slow focusing issues related to the AF assist beam. I have messed around with turning it on and off and there is a very noticeable difference. For example with my 70-200 as long as I find an area of some contrast it will focus almost instantly even dark situations. As soon as I turn it on it sometimes takes a full second or two to lock focus. I remember my 5D2 having improved focus with the AF assist from the 580exII. Is it a flash issue or a camera issue? I know there are a lot of you who have the same problems. Anyone find any solutions? Most of the time I don't need the AF assist but when it is pitch black and I need it it would be nice if I could focus a little faster. I just don't understand how the AF can be so great in almost all situations except this one area. Of course when I call CPS they claim they have never heard of an issue.I was wondering how the camera was set up to shoot, was it in one shot mode or AI servo? Ps have you tried using center point only? I am interested in this set up myself but now am a little unsure i want to until the issue is solved.
The AF assist only works with one shot. I usually use the center point if it is really dark because it works a little better. I would still get the 5D3 and a few 600ex-rt flashes if I were you. They work great considering this one issue which is frustrating but you can work around it fairly easily.
Charleston Dave says:
March 2, 2012 at 2:20 pm
Congrats on being a leader, Syl! Not a bad subset of features compared to your Speedlite wishlist for Canon from a year or two ago!
The form factor of this new 600/STE3 system is similar to the Pocket Wizard Flex/Mini/AC3 alternative I use. All of the shoots you demo would be easily accomplished with the PW system.
From your video, the new 600/ST-E3 offers these advantages over the PW system:
1. A beep when the remote flash is ready (one beep from the ST-E3 when all flashes are ready? or a beep from each flash?)
2. Up to 5 groups (not 3 as in PW)
3. Fancier LCD displays
4. Claimed longer range, although I have used the Flex/Mini system reliably at 120′ and haven’t needed anything longer than that.
whereas the PW system offers these advantages:
1. Works with pre-600 flashes
2. Offers 32 trigger channels, not just 15
3. Works with other PW triggers, making it easy to combine studio strobes with Speedlites.
4. Offers a mechanical flash power dial for each individual group in E-TTL or manual, instead of a single touch-panel.
The biggest missing piece of the puzzle is an under-$100 device that plugs into pre-600 Speedlites and communicates with the new ST-E3 radio transmitter. Those of us who have invested heavily in earlier Speedlites will be reluctant to discard our investment. You reference a combined radio/optical triggering arrangement but I’m dubious about the complexity of a hybrid system.
How about "AF point-linked spot metering" ??That's something I ask too; imperative !
I really hope they don't cripple this again!!