Monofin Training Drill:
Here Jose is using a kick board to help stabilise the upper body and a front snorkel to allow him to breath during the training exercise. This takes away the 'apnea' element away from this particular drill and allows him to focus on technique over breath hold while he adjusts to using the full sized monofin.

​How do you think he is doing?

The freefall can be one of the nicest aspects of depth freediving. The moment on the descent when you become 'negatively buoyant' and start to sink independently of effort. This of course has it's advantages, most prominently; saving energy (and therefore oxygen) and aiding relaxation (saving oxygen and facilitating ear equalisation).
So what is involved in a good freefall? Let's take a look:

• Correct weight: This allolws you to stop kicking at the correct point of the dive to start the freefall. Too light and you wont freefall early enough. Too heavy and you will waste energy on the ascent.
• Body position: Tucked in (elbows and knees), legs together, looking ahead (not down), and relaxed shoulders and neck.
• Equalisation: Remember to equalise! Use the movement of the lanyard or your fingers on the line to help judge the speed you are falling. Equalise frequently and before pressure is felt.
• Turn: With the correct hand position to turn, the momentum of the freefall can mean very little effort is needed to make a smooth turn at the bottom of the dive.
• .....and not forgetting..... The Way up!: Using POSITIVE buoyancy to finish your dive by stopping kicking in the last 3-8m  before the surface.

Those of you following One Breath Freediving on your social media channels will already know that I have been using the Paralenz dive camera quite extensively already, for both photos and videos, so for this review part 2 (part 1 is un-boxing and initial impressions),I wanted to look at it's use in the water. More than numbers such as pixels and frame rates, I wanted to discuss it's functionality and how well it works specifically from a freediver's point of view. 

Firstly, it's primary mount method that I have employed so far with the Paralenz dive camera has been the mask mount. For me this has been the most convenient as I am normallly using it while teaching or guiding. Once the mask attachment is threaded to the mask strap, you clip the camera on using the 'T-Rail' mount system that gives a reassuring double 'click' when properly secured.

The first thing you notice while wearing it in the water is.....that you don't actually notice the camera! Despite feeling substantial and solid when held in the hand, once attached to the mask I can honestly say that I forget that the camera is actually there. Being so non-intrusive is a huge plus for freedivers as we take in the water minimum equipment and definitely don't like things that create drag or resistance.

Functionality from this position is another massive plus. The feedback loop of vibrations of the camera unit, mean that you do not need to remove the camera (and mask) at all to know what setting you are in! For example, rotate the selector ring clockwise while turned on gives one vibration for video, two vibrations for camera, three for settings etc. And then long or short holds of the activation switch can start or stop recording or offer other functions. This creates a simple user and selector operating system and excellent hands free usability.

Now lets look at the quality of photos that Paralenz is capable of (for videos, check the OBF YouTube channel). All the snaps in this review were taken from the mask mount position, so just a reach to the side of the head and a short pull on the activation switch can give you some great photos. While primarily a video camera, the photos are surprisingly clear, sharp and lacking in distortion at the edges (as can be common for extremely wide angle cameras). In these photos I had Depth Colour Correction (DCC) turned on and Depth & Temperature overlay turned on. The photo above from 5m displays nice blue water and clear white logos on the wetsuit hood. The first photo handles the reflecting light from the shallow water very well and also created a shot that is not blurred or distorted from the divers movement.

Initial in water conclusions:

• Mask mount is very useful for hands free use
  
• Unit vibration feedback is a great idea and super useful with mask mount 
• Photos lack distortion and are very sharp
• DCC is perfect for multiple depth change diving (such as freediving)

Look out for part three of the test where I will review the features of the Paralenz App.

So what initial conclusions do I have:

• Great package, well designed and feels very high quality
• Nice extras included
• Easy and intuitive to use

Very much looking forward to testing it in the sea! Coming soon will be part 2 of the test when I will use it for the first time freediving in the Mediterranean sea, Malta :)