Storker

I've only used my NA-EM5 on a couple of dives, but I seem to have a problem rinsing all the seawater from underneath the port locking mechanism. I think I'm fairly careful in rinsing the housing after my dives, first hosing it off for a few minutes and then letting it soak for half an hour to an hour in a bucket of fresh water. I operate all the buttons and dials during soaking to wash out the seawater.

 

Even with this rinsing protocol, I see salt around the port locking mechanism, where the plastic mechanism is screwed on to the aluminum housing. I've attached a picture showing the salt coming from under the port lock. It seems as if there's seawater trapped under the mechanism, and it isn't rinsed out even after a half hour to an hour's soak. I'm a bit concerned about this, since salt generally is bad for anything metal.

• Is this a real problem, or just an imaginary one?
• What am I doing wrong?
• Is it a Good Idea™ or a Bad Idea™ to loosen the screws holding the port locking mechanism to the housing and seal the microscopic gap with silicone grease before re-tightening the screws?

 

OK, here's the story:

I got my OW - and AOW - last year. Since I've been taking pictures topside for a couple of decades and sometimes get a few shots I feel good about, I bought a house for my Canon G9 and started bringing it underwater. Note that I haven't been able to afford a strobe yet, so most of the pictures are taken in available light. So far I've had to focus my attention on my diving and haven't been able to "work" my pictures properly, but I still would like some feedback on my first feeble attempts at UW photography. Is there a future in UW photo for me? I'm currently spending quite a chunk of money on building an OM-D system, should I reconsider that and keep to topside photography?

 

(All the pictures are hyperlinked to the full version on Flickr)

 

 

 

 

In my topside photography, I strongly prefer available light or balanced flash over flash only, and I'm thinking of using colored filters - maybe combined with a complementary filter on the strobe - to dampen the green and blue channels and get enough signal in the red channel to have anything to salvage during post-processing. So, I'm seriously considering buying some Rosco gel filters, either the Rosco Color Correction Kit with warming, cooling, magenta and green or the Rosco Calcolor Kit with good, old-fashioned CC filters in the primary and secondary colors.

I've located a couple rather old articles here on Wetpixel about color filters (http://wetpixel.com/...ht-photography/ from 2003 and http://wetpixel.com/...er-photography/ from 2007), but I'd really like to know about the current status on using color gels and if there are any other resources I should read up on.