Has anyone else had noise issues with the YN battery pack?
Is this a Yongnuo equivalent of the Canon CP-E4? Didn't realise they made them.
The SF-18? So when does it whine exactly - in use when the flash is recharging?
Done a very quick video
Auto zoom works, but doesn't appear to account for crop factor. E.g. for 50mm focal length, flash could/should zoom to ~80mm and still cover entire frame. Just a bit less efficient, and only really matters when used on camera with direct flash."Auto zoom doesn't appear to work when on an APS-C body."
Really, I haven't heard this problem mentioned before?
The EXII ones do. They also give WB information if the flash duration is likely to effect the shot.From what I remember, Canon's Speedlites don't adjust for crop factor either when zooming the flash head.
I guess they just can't be bothered as the framed area will still be covered by the flash, it'll just be covering more area than it needs to so maximum power will be reduced a bit.
I don't think they do, but it's a bit of a crock anyway, the 200mm focal length is of little use to the photographer, but looks great on the spec sheet for 'improving' the power if the flash.One of the more significant improvements with the 600EX was the almost doubling of max zoom to 200mm - presumably the YN600EXs are the same?
Oops, I think the original 430ex did too, it's the 'designed for ETTL2' guns where the change was made.My Canon 580EX Mk1 guns will zoom according to crop-factor. It's enabled in custom functions, don't know about earlier models.
I use the zoom feature quite a lot, though not for direct on-camera flash so the automatic feature is irrelevant. It changes the spread of light with modifiers, generally used around the wide end, and I quite often zoom to max focal length when bouncing off a wall or ceiling, especially a high ceiling - makes a big difference.
I don't think they do, but it's a bit of a crock anyway, the 200mm focal length is of little use to the photographer, but looks great on the spec sheet for 'improving' the power if the flash.
Been waiting to pull the trigger for a many months, but the battery drain problems have put me off. They are only £100 on fleabay at the moment.
I'll wait till YN have them in the official YN store before buying mine.
Having used mine more, I'm now convinced that I'm not having battery drain. (Units dated 25/12/14)
Left a set of partially used batteries in since the weekend: just checked and still reporting approx same charge.
I don't know either! I think when I first got them I must have been doing lots of experimentation and fiddling but only intermittently looking at the battery meters so perceived some kind of constant drain. Now I'm leaving them unused for periods of days and finding that the batteries do stay charged betweenThanks for the update - strange why you thought / it appeared to be draining the batteries initially? although I don't always get the same lifespan out of batteries in various bits of kit.