6 replies to this topic

[jmurra31]

I realise most users here use PI and one day I am sure I will follow but for now photoshop is my main processing software.

I've just noticed photoshop have introduced a new denoise facility where it takes about 8 mins and saves file as a new dng file...................I've only used it so far on wildlife images but results seem very impressive, has anybody used it for astro images yet and if so what do they think?

[Zambiadarkskies]

I used it a few evenings back.  It wasn't really "proper" astro.  I was evaluating a camera that I had bought for one of our guides.  A Panasonic Lumix FZ100.  I was shooting widefield exposures of the Southern cross to see what the little camera could do.  The denoise worked superbly.  

 

But I have no idea how it would do compared to noise exterminator as yet.  The one thing is that I understand it has to be a raw file for it to work.  That might be a problem (certainly in my case) for some.  

[jmurra31]

Ah yes I didn't realise that at the time, won't even work on tiff files.....oh well

[stefsaber]

Where in photoshop is this new denoise option?

[jmurra31]

Where in photoshop is this new denoise option?

Within Camera Raw, it's called 'Denoise' and you can either reduce noise or do an up sampling I think (not tried the upsampling) but not that I can see both at the same time.

It isn't there is you load a file into Photoshop and then go back into Camera Raw it's only there when you first go into camera Raw..................so as previously mentioned it will only work on Raw files, not tiffs, not jpegs and definitely not on fits. Good results though, just not yet suitable for deep astro (unless working with Raw files), maybe milky way though.     

[Tapio]

NoiseXTerminator, try it.

[jmurra31]

NoiseXTerminator, try it.

I will do...... I understand though that you can't use it on linear images in photoshop or do you know of a work around or best practice of when to apply it if using app and ps?.My usual process flow is stack in APP and extract channels if needed there too as well as background calibrations. Apply a light stretch 10% from memory.....then take resulting tiff files into ps. Here I'd remove stars and apply a denoise to the starless images and carry on processing.......any recommendations above and beyond or instead of that flow?