Hi all. I have used my G15 now on 38 dives, mostly doing close-up/macro shots. I have also started using an Inon wet lens UCL-165. I tried stacking two Inons, but haven't achieved good results yet - would need perfectly calm conditions and a stationary subject. Anyway, I have adjusted some of my settings and have learned a couple of other tricks. I have not played with the standard controls enough to offer advice, but here is what I am doing with my C1 settings now for macro shots. I am currently using 1 strobe Ikelite DS 161.
G15 Presets
C1 Macro
ISO 100, F5.6
Func/Set Settings
WB = Auto
BKT = Off
Single Shot = single image
Timer = Off
Flash Power = 0
ND Filter Off (I turn this on manually when I want a dark background on the photo)
Aspect Ration = 4:3
Raw-JPEG = I am shooting both until I get better adapted to RAW. It will take a little longer to save the photos, use up more card space, and use the battery up faster.
L = L
1920 = Set movies to 1920 for full movies (I occasionally shoot macro subjects in video)
Menu Settings (Camera symbol)
AF Frame = Flexizone
Digital Zoom = disabled in Flexizone. This only crops your photos and uses your battery faster
AF-Point Zoom = I have been bouncing back and forth between On and Off. In On, it enlarges the area I am focused on letting me see it in more detail, but it also makes it harder for me to frame the photo I want. It is also a little difficult to use this feature on moving objects. It is great for sedentary objects.
Server AF = Off. Another battery sucker.
Continuous AF = Off
AF Assist Beam = Off
MF Point Zoom = On (I may try changing this one)
Safety MF = On
Flash control Flash Mode is Auto, Flesh Exp Com is 0, Shutter Sync is 1st curtain, Red Eye is Off, Safety FE is Off
ISO Settings Max ISO Speed is 800, Rate of Change is Standard
High ISO NR not available
Spot AE Point=Center
Safety Shift=Off
Wind Filter=Off
Review=3 seconds (I may try reducing this to 2 to save battery, but 3 seems to be pretty close to strobe recyle time and/or file saving time).
Review Info = Off
Blink Detection = Off
Custom Display= Still playing with this one
IS Mode=Shoot Only
Converter=None
Face ID Settings Face ID is Off
Set Func=I havent played with this one yet
Set Shortcut Button=Another one I havent played with yet
Save Settings is set to C1 for this list of settings
Tools Menu (the Tool symbol after hitting the Menu button)
LCD brightness is all the way up.
Power Saving - I just set mine to turn my LCD off after 1 minute. I had it set to 3 minutes, but sometimes my battery was dying before I completed dive 3. I havent gotten a real feel to see if this will save much of the battery power or if I will change it to another setting
If pictures are coming out too light or dark, the exposure control on top of the camera can be used as a quick fix.
For Macro with wet lense I do the following:
In C1, I zoom all the way out so that my macro mode automatically turns off (as soon as the telephoto graph hits the yellow bar on the right, macro mode is automatically turned off on this camera).
I set the f-stop to F8 to increase depth of field.
If I dont want to shoot zoomed out all the way, I change to C2 and set the f-stop to F8.