Evolution from Mark II to Mark III
With the release of the Canon EOS 5D Mark III, many underwater photographers have been eagerly waiting for the SEA&SEA MDX-5D Mark III housing, especially for myself who have a lot of experience in photographing big fish in bare water and shooting spawning during early morning dives in Peleliu, Palau, " You finally got it out!" I wanted to get this model so much.
The reason is that when photographing large creatures, marine mammals, etc., there are many times when you are photographing subjects that are at a considerable distance from each other, or when you encounter unexpected large creatures early in the morning or at dusk. In contrast to diving and shooting at a distance where an external strobe can reach the subject, nearly 90% of the time I shoot without a strobe.
In such cases, I want the images to be free of pixel grains even when the ISO sensitivity is increased. With the Mark III, however, you can usually go up to ISO 25600. Again, this is a matter of personal preference, but I feel that I can shoot at ISO 6400, which was the limit of the Mark II, without any problems.
This allows me to get clearer images even in dark underwater. Not only that, but the focus in dark underwater is also much improved, and I no longer have the frustration of not being able to focus in dark water as I used to.
The first improvement as a housing is that the image confirmation switch has been moved from its previous position to right next to the left hand grip, and for those who have switched from the Mark II, this improvement has eliminated the need to remove the grip every time to check the screen, which is very convenient. This improvement is obvious to those who have switched from the Mark II.
The ISO sensitivity switch has been moved to the right side of the grip to allow for immediate sensitivity changes, which is very helpful for me as I often shoot with no flash.
Also, the stay part to fix the camera to the housing, which used to require a special tool or coin to open and close the screw threads, is no longer necessary, so you don't have to say "I can't take it off! I can't put it back on! This is also a very helpful improvement for interviews where you have to shoot both on land and underwater.
I would like to get another housing when the time is right, since I have already purchased two housings for each of the 5D, 5D Mark II, and 7D.