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Transient global amnesia is a well defined medical condition (although still not fully understood) and I would suspect life threatening if occurring underwater. Even though people affected by it don't become physically disabled in any way, the loss of short term memory is absolute; they can't...

If you are interested in adding graphical gauges or telemetry instead of plain text in your videos, check out DashWare - Telemetry Data Overlay on Your Videos. It at least used to be free to use.

They have stated that it's a limitation in the initial release firmware and could be extended in the future through software upgrade.

Just to clear one thing up, since you keep coming back to the oxygen fraction and ppO2. From a technical perspective, when off-gassing nitrogen the oxygen fraction of the breathing mix is completely irrelevant. The reason people use 100% oxygen for decompression is obviously because we need...

I wasn't going to start picking this "study" apart, but in case someone is trying to take something away from reading it, I'll just add a couple of things to the above post. This study does not have any randomization or blinding (which are both requirements for quality scientific research)...

I find it a little surprising how relaxed the attitudes towards propranolol are on these forums. Although I do not do fitness to dive evaluations routinely, it is my understanding that regular use of non-selective beta-blockers is a contraindication to diving. Not only do they adversely affect...

Not sure how surprising the results are, but I found the participant height range of -1.71 to 5.29 meters most astonishing ;) Seriously though, it would have been even more interesting if they had repeated the tests to see how long lasting the effect is. Maybe we'll get to see that in another...

Sorry for the late reply. The NLS lights have been recommended by a few and are of course high on my list. The idea is for the light to be for year round diving, including ice diving. However, I'll have to postpone this project until next season and think this thread has run its course for now...

I'm sure up until the last post everyone has tried to help you (and your wife), even though others may have a style that can come across a bit more patronising to some. Others, myself included, speak English as a foreign language and due to limited vocabulary can sound blunt at times. On a...

I'm not familiar with your camera model, so I might not be the right person to answer, but this sort of sounds like a possible pre-flash problem. In case your camera uses pre-flash, check that the strobe is firing during the actual flash and not during the pre-flash.

Pain in your ears and a blocked sensation after the dive often implies that there has been bleeding in the middle ear. It's not all that dangerous, but if this happens every time you dive it would be best to learn some more effective techniques for equalisation, at the very least. As others have...

I hear you! I currently dive with a Light&Motion handheld, when it's not attached to my camera rig, and it's mostly enough for me. But the diving conditions here pretty much require a light anywhere below 10 meters and a powerful light anywhere below 20 meters, which is where the L&M 1200 just...

We do have a couple of pretty good local alternatives, at one of which is also known for stellar customer service, so I'm definitely looking into those options as well. But as the market is much smaller, getting any reliable information about user experiences is also much harder. The battery...

Finland. The national post service refuses to carry batteries abroad, which leaves only courier companies. I once tried to ship a damaged Kindle e-book reader to central Europe for repairs and the cheapest offer from courier companies was about 150€ for the delivery. Buying a new Kindle and...

Hey, thanks for the info! Unfortunately ordering a battery from NL would make warranty repairs almost impossible, but it's an option to consider for sure.

Actually, that it is the same technology that's used in my mobile devices is what got me a bit worried ;) In all fairness though, the abuse a mobile phone battery takes in daily use is in another order of magnitude that I would expect a diving light battery to take in normal use. HID still seems...

Greetings, I'm not 100% sure this is the right place to ask, but couldn't really think of a better one either. I suppose the target audience of this forum have canister lights that are in heavy use. I'm about to get myself a serious canister light and am currently mapping my options. As I...

I'm not exactly sure what you're after. I haven't yet seen a camera that could record video and simultaneously take aperture, shutter speed and ISO-level controlled, full resolution pictures. With my understanding of camera anatomy, I don't think it's even possible or at least not feasible. To...

In some more simple housings, like some housings made for GoPro that I have seen, the critical point is the window in front of the lens. Unlike most of the parts of a housing, that window cannot be convex or have any reinforcing thicker parts, but has to be absolutely flat and uniform. At some...

If you are in doubt about the nature and urgency of a diving related injury, you could try calling DAN (Divers Alert Network). I believe they have a diving physician on call for urgent consultations even if you don't have their insurance. See this page for more info: Scuba Diving Medical...