CANONSCHOOL

Our technical guru is here to help. No Canon conundrum is too big or small. Get in touch today at EOSSOS@futurenet.com

Photo Plus EXPERT

BRIAN WORLEY

CANON PRO

Brian is a freelance photographer and photo tutor, based in Oxfordshire. He has unrivalled EOS DSLR knowledge, after working for Canon for over 15 years, and is on hand to answer all your EOS and photographic queries

"How do you stop tall buildings from appearing to fall over when photographing them with a wide-angle lens?"

Claire Jenkins, Oswestry

BRIAN SAYS… Tall buildings appear to be falling over when shot with a wide-angle lens as the top of the building is further away from the camera than the bottom, so it appears smaller; an effect known as perspective distortion. You can avoid it by positioning the camera at the mid-point of the building, but invariably this is not possible. A solution that Canon pro architecture photographers use is a tilt-shift lens. Pictures are captured with the camera back vertical and then the lens is shifted up to correct the perspective distortion. For occasional use, you can correct verticals with Photoshop or Lightroom afterwards, but the results aren’t ever as good as tilt-shift lenses (see page 16 for how to use a Canon TS-E lenses).

Taken with a 24mm lens, this photo needed perspective correction in Photoshop to make the building look upright, instead of leaning back

12 frames per second is the maximum drive speed without using a Canon EOS R5’s or R6’s electronic shutter mode

"What causes the EOS R5 to slow down as with high speed drive I’m not getting close to 20 frames per second? "

Christian Holmes, Galashiels

BRIAN SAYS… EOS R5 and R6 have several conditions to achieve the 20fps shooting rate. The first and most crucial is that the shutter mode is set to electronic.

You’ll also need a fast card to maximize the duration of the burst. Electronic shutter mode cannot be used with flash, and may exhibit rolling shutter artifacts and/or banding under artificial lights.