Originally posted by mcgregni Bruce, you should use a fixed ISO 100 for HSS work.... There's no purpose for any other ISO for portraits with HSS
Yeah I'm pretty sure that any of my previous Av HSS work would have been ISO 100 (even if Auto and not toggled off briefly), shutter speeds 1/5000+ etc, as I do enjoy shooting pretty wide apertures, F4-5.6 is a rarity for me! Remember, Av doesn't always mean Auto-ISO, I have mine set to take me out of that mode and use it often.
I just simply meant that Av Mode has that convenience of 'set & forget', you can set things up so that you're never at risk of dropping shutter speeds too low, can walk between outdoors and indoors without needing to fiddle too much and catch those candid impromptu moments easier.
I 100% agree that if conditions allow then Manual Mode makes complete and utter sense, less guess work being done by the flash, more control over ambient lighting and flash power etc. But I don't think for one minute that Av Flash work is somehow a 'beginners' thing or a mistake, it has it's place, it just purely depends on the situation you find yourself shooting in.
I joined a Magmod FB Forum group recently whereby this exact question was asked (what mode do you use flash work in), and people submitted their opinions backed up by example shots, I found it very interesting that quite a few professional wedding photographers (and I mean professional, their work was of a very
very high standard) would show some of their reception Av Flash shots, then share their flash set ups that try and tread that line whereby there wouldn't be any unsuspecting odd flash exposured shots. Having in camera EV at -07-1 was a common starting point (something my K-1 is typically set as default), and then the flash power too also dialled back a tad. Results were excellent, fantastic candid moments caught with successful flash firing.
Of course there are those 2-3 light set up bride and groom posed shots, no one was talking about Av mode here, it's Manual all the way, but for running and gunning work there was actually a lot of Pro Av Flash users.
I'm just slightly peeved that for the first time Av mode (or actually I think any mode other than Manual, even X mode!) is off the table even when shooting with Modern AF lenses with the Cactus System (because of this bizarre banding issue that occurs). It means that I will have to try and adopt a pure Manual Mode of 'running and gunning'... Well... it might make me a better shooter if I manage to adapt, I am worried however that I do lose candid moments from fiddling with a setting here or there :/