Luminous Landscape Forum

Equipment & Techniques => Cameras, Lenses and Shooting gear => Topic started by: dreed on January 06, 2019, 08:54:21 am

Title: 5D4: Canon has not solved the banding problem
Post by: dreed on January 06, 2019, 08:54:21 am: Playing around with a sunset shot that I took recently to try not get a bit white splodge, I shot at 1/4000, f/8 (-2EV) and what do I find?

Down at the very bottom of the image a purple band that spans the entire image on top of a green band that spans the entire image. (processed with LR 8.1)

No this isn't intended to be a "final image", I was just playing around with settings to see what was possible with this image (likely end result is trash.)
Title: Re: 5D4: Canon has not solved the banding problem
Post by: BernardLanguillier on January 06, 2019, 04:21:21 pm: Can’t see it, where exactly is it?

Cheers,
Bernard
Title: Re: 5D4: Canon has not solved the banding problem
Post by: Rhossydd on January 06, 2019, 05:18:27 pm: Quote from: BernardLanguillier on January 06, 2019, 04:21:21 pm
Can’t see it,
Nor can I.

Without knowing how a file has been post processed one single jpg is meaningless.
Title: Re: 5D4: Canon has not solved the banding problem
Post by: kers on January 06, 2019, 06:19:21 pm: i only see jpeg artifacts...
Title: Re: 5D4: Canon has not solved the banding problem
Post by: BobShaw on January 06, 2019, 08:56:25 pm: Sunset or sunrise is when the top of the sun crosses the horizon.
This is not -2EV near the big white blob. It is massively overexposed and you are probably just looking at flare.
You can possibly damage the sensor.
Title: Re: 5D4: Canon has not solved the banding problem
Post by: Kirk_C on January 07, 2019, 12:05:21 am: Quote from: BernardLanguillier on January 06, 2019, 04:21:21 pm
Can’t see it, where exactly is it?

Oh good I'm not the only one who can't see it.
Title: Re: 5D4: Canon has not solved the banding problem
Post by: dreed on January 07, 2019, 06:11:46 am: Quote from: Kirk_C on January 07, 2019, 12:05:21 am
Oh good I'm not the only one who can't see it.

Ok, this is really hard to demonstrate. Harder than I imagined.

* on sRGB it isn't easy to easy but on a wide gamut monitor, it looks awful
* attachments are limited to 4MB making TIFF hard to do (but I've done so - 100% crop of the very bottom)
Title: Re: 5D4: Canon has not solved the banding problem
Post by: smahn on January 07, 2019, 11:24:18 pm: Don't know what's causing it but I can recommend an easy fix if you have Photoshop or similar.

Create a blank layer above set to color mode. Use a large soft clone brush and clone over the green band with colors from above. It'll retain all that purple/green/blue color variability in the peaks and valleys of the waves.