Asian Diver and Scuba Diver Issue 01-2020 (117) | Page 5

setting would produce images of greater depth of
field, keeping everything in focus. But we must
also understand that being in focus does not
equate to total sharpness.
Since it is impossible to make lenses that are
uniformly sharp at every aperture, we need to
identify the “sweet spot” in the aperture that will
produce the highest quality of sharpness in the
lenses you use. Both my Canon EF100mm f/2.8L
Macro IS USM and Canon EF100mm f/2.8 Macro
USM deliver maximum sharpness when shot
between f/8 and f/11. I normally shoot at f/11 to
achieve the largest depth of field while staying
within the lens sweet spot; pushing the aperture
to f/16 when photographing with two stacked
diopters or when photographing a larger animal;
When shooting around f/11, this optimal sharpness
will also allow the delicate textures on your subject
to show in your final image.
To obtain the best details in a final image
on a tiny subject, try shooting at the minimum
focusing distance, as it will require less cropping.
As easy as that may sound, it is impossible
to keep a constant distance between you and
your subject in midwater for any period of time.
Should you and your subject drift towards each
other, you might end up shooting at less then
the lens’ minimum focusing distance, resulting
in a blurry image. However, the animal will
usually move away after a shot is fired. Shooting
with a continuous burst will ensure you get
a focused shot if the animal is too close, since
it may move in and out of the minimum focusing
range erratically. Cephalopods, especially
squids, react dramatically to strobe lights.
We can sometimes record their “surprised”
reactions through a series of continuous shots
in these bursts.
Last but not least, unless you are a research
scientist, do not collect the animals so you
may photograph them later in the comfort of your
room. Do not cause intentional injury to these
animals just to slow them down. Do not “fan”them
with your palm to send them tumbling away,
causing them to stop momentarily when they
have lost their direction, as you may have
unknowingly ruptured their delicate body parts.
Be a true nature photographer. Choose to
shoot naturally. And I am proud to say, with
my Canon setup, I can!
To find out more, visit To find out more, visit
https://goo.gl/NrUPyH https://goo.gl/7yPqUj
• 20.2-megapixel full-frame CMOS sensor
• Dual DIGIC 6+ image processors
• 14fps shooting with 61 AF points
• ISO speeds of up to 409,600
• 4K movie (60p/50p) with 4K frame grab
• Dual Pixel CMOS AF
• - 30.4-megapixel full-frame CMOS sensor
• - ISO speeds of up to 102,400
• - 4K movie (30p/25p) with 4K frame grab
• - Dual Pixel CMOS AF
• - 7fps shooting with 61 AF points
• - Built-in Wi-Fi/Bluetooth/NFC
h t t p s : // s n a p s h o t.c a n o n -a s i a .c o m
https://asia.canon