Travel Adventures
will no longer focus at longer distances.
• The cons of a teleconver ter is the loss of light, therefore slightly dimmer viewfinder. The camera can’ t focus fast enough.
• The extension tubes will make the port needs much longer and we have to deal with loss of light again, so I don’ t recommend them.
I recommend a wet diopter( or a combination of two) for super macro photography. Wet diopters that can be placed over a port, will allow for increased magnification by reducing the minimum working distance. A big advantage of a wet diopter is that it can be added and removed during the dive. It gives us more flexibility. Please note, when using a wet diopter, the camera lens should be as close as possible to the port, to reduce the distance between the camera lens and the wet diopter.
There are several ways to attach a wet lens to the camera, including a bayonet mount which simply rotates and locks on, a“ quick adapt” mount that snaps on in one motion. I prefer to use a screw mount which must be screwed on the port. The distance between the port and wet lens is short in this case. That gives more sharpness and detail to the picture. 1cm( 0.4 inches) or even 0.5cm( 0.2 inches) can make a big difference on the focus and can affect the sharpness. That’ s why I don’ t recommend a bayonet mount. The best choice is a screw mount.
You must be careful with air bubbles which may appear by screwing on the wet lens above water. These small bubbles may appear invisible to our sight, but they can disturb the focus. To avoid them, screw the wet lens on underwater.
Nowadays there is a big choice of wet diopters to choose from. I use different brands: SubSee + 5, + 10, Epoque DML 2, Inon UCL-165, SAGA Pro + 5, + 10.
For a larger magnification, we can stack two wet lenses together using adapters or threads. We can achieve truly large magnifications. By stacking wet diopters, attached on a 100mm macro lens,
The MAG Vung Tau 43