topic Re: Canon 5D Mark IV and 24-70mm L and when shooting vertically, camera bottom side is dark in EOS DSLR & Mirrorless Cameras

Canon 5D Mark IV and 24-70mm L and when shooting vertically, camera bottom side is dark

lifer311 — Wed, 26 Oct 2016 19:17:36 GMT

So i'm shooting product photos for an auction and I shoot vertically a lot. Usually I turn the camera clockwise, with the camera bottom being on my left. When I take the picture, the left edge of the photo seemed shadowed or slightly darker. I thought it was a lighting problem, but I've noticed that if I turn the camera counter clockwise, the right side is dark, not the left. Never experience this before. Suggestions?

Re: Canon 5D Mark IV and 24-70mm L and when shooting vertically, camera bottom side is dark

kvbarkley — Wed, 26 Oct 2016 19:24:58 GMT

Are you using flash? Is it on camera?

Re: Canon 5D Mark IV and 24-70mm L and when shooting vertically, camera bottom side is dark

lifer311 — Wed, 26 Oct 2016 19:34:54 GMT

Softboxes. Here are two undedited examples. I'm simply turning the camera opposite ways. I cropped it slightly, but they were both shot vertically . First photo has the bottom of my camera facing the right. Brand new camera, used lens.

Re: Canon 5D Mark IV and 24-70mm L and when shooting vertically, camera bottom side is dark

RobertTheFat — Wed, 26 Oct 2016 19:41:41 GMT

Are you using flash? What you describe sounds like you may have had the flash unit angled for bounce flash and forgot to readjust it when you rotated the camera.

Re: Canon 5D Mark IV and 24-70mm L and when shooting vertically, camera bottom side is dark

lifer311 — Wed, 26 Oct 2016 19:51:38 GMT

Two softboxes, equally spaced, pointing towards the wall on a slight angle inward. If I shoot horizontally, both the left and right sides are equally lit.

Re: Canon 5D Mark IV and 24-70mm L and when shooting vertically, camera bottom side is dark

RobertTheFat — Wed, 26 Oct 2016 20:10:48 GMT

Is that the old 24-70 or the Mark II? I've read that the old one had a huge and rather wacky lens hood. Could it be casting a shadow? Something must be.

Re: Canon 5D Mark IV and 24-70mm L and when shooting vertically, camera bottom side is dark

lifer311 — Wed, 26 Oct 2016 20:19:05 GMT

It is the old one, but I'm not using a lense hood. I'm stumped. It doesn't make sense to me.

Re: Canon 5D Mark IV and 24-70mm L and when shooting vertically, camera bottom side is dark

Waddizzle — Wed, 26 Oct 2016 20:25:08 GMT

The only obvoius variable that's changing is gravity. It's almost as if the image circle shifts.

Re: Canon 5D Mark IV and 24-70mm L and when shooting vertically, camera bottom side is dark

Waddizzle — Wed, 26 Oct 2016 20:29:08 GMT

@lifer311 wrote:
It is the old one, but I'm not using a lense hood. I'm stumped. It doesn't make sense to me.

You don't have auto-rotate enabled? Should the one image be upside down?

Re: Canon 5D Mark IV and 24-70mm L and when shooting vertically, camera bottom side is dark

RobertTheFat — Wed, 26 Oct 2016 20:50:45 GMT

It looks as though something on the top or bottom of the camera is interfering with the light from one of the softboxes. (Which one depends on which way the camera is oriented.) A tripod mount, perhaps?

Re: Canon 5D Mark IV and 24-70mm L and when shooting vertically, camera bottom side is dark

Waddizzle — Thu, 27 Oct 2016 00:31:06 GMT

@RobertTheFat wrote:
It looks as though something on the top or bottom of the camera is interfering with the light from one of the softboxes. (Which one depends on which way the camera is oriented.) A tripod mount, perhaps?

Whatever the issue is, it is staying one the same side of the camera. It's not switching sides.

Re: Canon 5D Mark IV and 24-70mm L and when shooting vertically, camera bottom side is dark

TCampbell — Thu, 27 Oct 2016 01:29:58 GMT

What shutter speed are you using?

Some 3rd party flashes have a tiny bit of lag and the camera needs to be backed off the normal flash-sync speed by about 1/3rd of a stop.