Mike Saunders

what you can achieve in that environment and what the two cameras might be capable of, are two different things very much so!

technically speaking what are the advantages and disadvantages of the APSC and full frame cameras? clearly bigger sensor and more pixels with full frame, but beyond that are there any specific technical or optical matters of relevance to UW photography? Mike S

thanks I think I may have over darkened it in lightroom

thanks everyone I'm not underwater until September so i am using BBF on my camera at work and getting used to it I can see the advantages immediately but it is not second nature yet the recent shark dive with ultra wide angle produced very few out of focus shots but my attempts at macro in the past have been much worse - it seems like a definite for macro at least

do serious underwater photographers use back button focus rather than the standard shutter release? I'm wondering if it is a new skill I should try to master

bugger! I'm going in November....

Tamron seem to be producing a lot of interesting lenses I have the 11-20 2.8 apsc lens which is pretty sharp and much cheaper

accidentally overexposed on the strobes a bit but as I was shooting in raw I was able to take this down and give the photos a much more dramatic look by reducing the overall exposure. Quie pleased with some of these If anyone is in the South of the UK - these trips run from Plymouth with InDeep and a few out of Penzance compared to flying halfway round the world to see sharks at a distance this was an amazing experience. The sharks turn up eventually and then swim round and round you until you fill up your sd card or run out of batteries!

thanks for the advice strobe definiely made the images better I'll submit a few more when I have had time to sit down and process in LR

I have seen them thanks - they are fantastic it looks like strobe was used as there is too much light on the sharks face to really be from above strobes it is!

my thoughts are: if no strobes i can use program or similar to get fast shutter speed with available light- also much easier bobbing about near the surface without a big rig downside is that it might be a dark day - slower shutter speeds - and underneath of sharks could be very dark i can’t work out from the images if flash has. been used

i’m going on a blue shark day trip snorkelling only with blue sharks in july curious what you all advise about using strobes. it would be much simpler using natural light but would some fill in make the pictures much better? the attached images from the tour company website

great- thanks for all the advice

what size SD cards do you tend to take on a trip and how many? Furthermore, is there any merit in buying the expensive (faster) ones for still UW photography? A 32Gb card should store 1200 or so 25mb .raw images from my camera which is possibly a whole trip but I am reluctant to leave it all on one I was thinking of taking one card per day and backing up to a portable HDD in the evening (sorry if this specific topic has been covered before) Mike S