CANONSCHOOL
68 http://www.digitalcameraworld.com
My EOS 6D Mk II
used to display
the mode screen
when it was on.
Why does it stay
blank now?
Lee Walsh, PaddingtonBRIAN SAYS... The
camera remembers the
last used screen when
switched off. You have
been switching off with the
LCD displaying nothing.
Switch the camera on and
press the INFO button to
display the screen you
want, then this will be the
one that will be shown
when you switch on.I can’t connect
my EOS 760D
using Wi-Fi to a
computer with
EOS Utility.
What’s up?
Rick Atkinson, OxtedBRIAN SAYS... If you
need to connect to your
computer you have to use
the USB connection. Later
models such as the EOS
800D, or cameras such as
the EOS 90D and EOS 6D
Mark II allow the camera to
connect to EOS Utility.My EOS 5D Mk IV
only has a 1-shot
buffer when
using RAW, is
that normal?
Ron Lloyd, HampshireBRIAN SAYS... Usually
it’s the speed of memory
cards that affects the size
of the buffer, but there are
settings for processing
in-camera that have an
effect. I think you have
digital lens optimizer
(DLO) lens corrections
turned on, this will reduce
the buffer to a single shot.I want to match the memory card to the
EOS 90D camera write speed for shooting
4 K v ideo, w h a t c ar d do I need?
Carl Lebron, Amherst NYBRIAN SAYS... The EOS 90D manual says that the camera
requires 860MB of space for each minute of 4K video. This is
an average and does depend on the scene; complex scenes
with lots of detail don’t compress well and may need more
space. Dividing by sixty gets you to 14.3MB/second, so you’d
expect a 30MB/s card to be okay. However, cards tend to be
rated by read speed, which is usually faster. The manual also
says that UHS Speed Class 3 or higher cards should be used,
this is a better measure of the sustained write performance
of a card, exactly what’s required for video. Look for SD
cards with a U3 logo on them to be sure of compatibility.Six SD cards, but only the four on the left with the U3 logo
are suitable for recording 4K video with Canon EOS 90DCan help me find a set
rechargeable batteries for
my off-camera flashes?
Phoebe Marshall, AbingdonBRIAN SAYS... I’ve tried a few
rechargeable batteries in my flashes
and have settled on the rechargeable
Eneloop AA cells. I find that the basic
white coloured ones are fine for most
shoots and seem to have capacity
beyond their spec. But, whichever you
use, ensure you get a quality charger
that can charge each cell individually.
I have a Powerex charger with eight
bays and it has been in use with the
same sets of batteries for years.Make sure to get a charger that can charge
each rechargeable battery individuallyThe red box shows the bit of the frame that’d be
shot using an APS-C camera with the same lensHow do you set exposure
compensation for the flash when
using automatic E-TTL mode?
Peter Lightfoot, MidhurstBRIAN SAYS... There are two places you can set flash
exposure comp (FEC); the camera body, or (on most
models) the Speedlite. Both achieve the same. If you set
FEC on the flash it takes priority over the camera. So
setting -2EV on the camera and
+1EV on the flash means +1EV.
The best advice is to choose one
place only and do it there. I use a
custom function on the Speedlite
600EX II-RT and 430EX III-RT to
allow me to dial in FEC by turning
the dial on the flash. Then I know
that camera dial is for ambient
and flash dial is for flash comp.I’m confused by the
idea that smaller sensor
gives a lens greater reach
than when using the same
lens on full-frame?
Tracey Franklin, DistingtonBRIAN SAYS... APS-C sized sensors
are 22.4x15mm, so lenses will have a
smaller angle of view than when fitted
to a camera with a full-frame sensor.
Going from full-frame to a crop sensor
you can express the change in angle of
view as a focal length multiplier – 1.6x
for Canon’s APS-C size.C.Fn 13 set to 1 makes flash exposure
compensation easy to change by just
turning the wheel on the Speedlite