Thursday 30 September 2010

Bits and bobs

I film using a GoPro HD camera which gives much better results than the old GoPro wide low-res camera. But if you're thinking about buying one for underwater use be aware that at present the GoPro HD does not focus properly underwater. For underwater use the camera requires a flat lens rather than the dome lens that it ships with, currently you have to purchase a 3rd party modification to achieve this (or do a custom job yourself). When I contacted them about this they said I was on my own as they don't advertise it as an underwater camera which is amusing as they clearly state it's waterproof to 180ft.

I went with this goforfocus.com its a simple lens replacement that you fit yourself. The process is very easy and the results are excellent, making it a cheap effective solution.

I've been through several mounting set-ups as well and have settled on a modified hang-glider camera mount for my spear-gun. It has Velcro straps so is easy to fit and a movable arm allowing me to adjust the camera position quickly. I'd recommend exploring these options before shelling out the extra cash for a GoPro branded mount.


Up until recently I used a mount on top of my torch for night dives but I discovered that as the camera was facing directly down the beam of light it washed out the subject. The light reflects back from particles in the water as well and the effect is compounded if your filming straight down the beam. You get much better results if you hold the camera separately and shine the torchlight in from an angle.

I generally use Windows Live Movie Maker which is more than adequate for the little clips I put together but I ran into a couple of problems with this as well. Annoyingly you need to convert videos from MP4 to a format that WLMM can read, I settled with mp4cam2avi which does a great job batch converting to .avi format.

The next problem was (as you can see from some of my earlier videos) that WLMM kept putting a black border around my hi-res videos. I have just found out that there is an aspect ratio setting (under the “view” tab) that when set to wide-screen eliminates the problem.

Just a few bits and bobs that I hope might save someone some time!

While I'm posting here is a fun outer space screen grab I took from my last lot of footage....


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