Dehaze?

[ronecc]

Suddenly, Dehaze filter is working wrong. I opened a photo that has some hills in the distance. They are a touch bright and a touch hazy. I clicked the Dehaze tab and the photo just washed out white on the hills. I could get the photo back to it's original version by reducing the distance, but neither of the other sliders will do anything. I have opened and closed Affinity twice, but it made no difference. Maybe the photo is not hazy enough. Affinity version number 1.9.2.1035 

[v_kyr]

36 minutes ago, ronecc said:

Affinity version number 1.9.2.1035

BTW, the actual APh version is 1.10.5. - Search & see also "affinity photo" dehaze filter which will point you to several other threads related to that (that filter is/behaves often picky).

[R C-R]

1 hour ago, v_kyr said:

Search & see also "affinity photo" dehaze filter which will point you to several other threads related to that (that filter is/behaves often picky).

I confess I did not open every thread that search resulted in, but in none of the ones I checked, did I see anything specifically about the filter being picky. Any info about what that means would be appreciated.

I only ask because I do not have any hazy photos of my own to test with but for the few samples I have tested from Pixabay, the filter seems to work as expected.

[Ron P.]

31 minutes ago, R C-R said:

I only ask because I do not have any hazy photos of my own to test with

Here's a couple of mine. Great Smokey Mountains.

 

Trip_Home.zip

[R C-R]

28 minutes ago, Ron P. said:

Here's a couple of mine. Great Smokey Mountains.

Thanks! The haze removal filter seems to working as expected for me on both. How well does it work for you?

[Ron P.]

It works however, unless you experiment, work with the sliders to get a feel how they affect each other, it does seem like the filter is picky.

[walt.farrell]

Can you share your photo with us, @ronecc?

Also, if you're on Windows, have you tried disabling Hardware Acceleration (OpenCL) in Preferences/Performance, if it's enabled?

[ronecc]

Hello Walt. Hopefully below is the photo in it's original form and when I have applied the haze filter. The slider is approximately at 85% on distance and the strength and exposure at around 50% each, just as affinity has set it at. Adjusting distance or strength only make the photo wash out more or return it to the original. I know it is not the best photo as it was taken on my old iphone, but I thought I could get a bit more detail in the distance. The original has the blue sky, but is showing as the second photo. I have since tried the clarity filter and that has improved it slightly on 100%, so maybe it is just that the photo is not hazy enough and confused the software.

[R C-R]

1 hour ago, ronecc said:

The original has the blue sky, but is showing as the second photo.

It does not look to me like there is much of any haze in that photo, which may be why the Haze Removal filter does not work well with it.

What happens if you try with a different photo that has considerable amounts of haze in it, like maybe one of the samples @Ron P. uploaded?

[NotMyFault]

The clarity filter, applied selectively to the distance parts, is more suitable for this image. As pointed out before, there is no haze.

The source image is almost perfect “as-is” for my taste, as it looks exactly how i would expect any photo of such capture conditions to be. Adjusting the distant slightly less contrasty areas will make it look unrealistic.

[walt.farrell]

35 minutes ago, NotMyFault said:

The source image is almost perfect “as-is” for my taste, as it looks exactly how i would expect any photo of such capture conditions to be. Adjusting the distant slightly less contrasty areas will make it look unrealistic.

I agree.

[Lisbon]

20 hours ago, ronecc said:

I clicked the Dehaze tab and the photo just washed out white on the hills.

(I probably didn't quite understand the problem)

Dehaze tab?
Are you refering to the "Haze removal" filter?
I'm getting a completely different result.

Have you tried @walt.farrell suggestion?

Im running windows. What is your OS?

[ronecc]

3 hours ago, Lisbon said:

(I probably didn't quite understand the problem)

Dehaze tab?
Are you refering to the "Haze removal" filter?
I'm getting a completely different result.

Have you tried @walt.farrell suggestion?

Im running windows. What is your OS?

Hi. The hardware acceleration option is not ticked and is not available it tells me. I am running Windows 10. There is no way my software adjusted the haze that much, in fact it washed out on the same setting you show

[Lisbon]

1 hour ago, ronecc said:

I am running Windows 10.

Same as me.

1 hour ago, ronecc said:

in fact it washed out on the same setting you show

I see.
It's doing almost the opposite of what it's supposed to do.

Initially you said that the dehaze suddenly stopped working.
I noticed that in the last few days my operating system has been very active with updates.
It is possible that the problem is related. Or, it could just be coincidence.

In the meantime, if no solution emerges, I suggest you report this under "Photo Bugs found on Windows".