Are DXO Having a Laugh, or just Money Grabbing?

And why not (I have lot of other sugestions for this tool), have an option (one enable/disable button) to make it work in lab color space (which would imply 2 invisible color space conversions) so it could be able to really only transform brightness and not saturation (since changing contrast/luminosity distribution change saturation in not lab color space).

So the tool would do this (invisible for user) when this option enabled :
Convert from Dxo color space to lab color space
Apply curve on luminosity axis in lab color space
Convert from lab color space to dxo color space

And saturation would not change whatever curve is applied. Only luminosity would change.

I suppose (maybe i’m wrong) changing color space is only vector-based calculus which should be lighting fast with RTX graphic cards (realtime) at least.


Affinity Photo allows LAB curves where in theory you can change luminosity by itself, so it is possible. The A and B channels give control of warmth and tint for any image (not just RAW).

Silver Efex gives completely different results than PhotoLab. We’ve already been through this before.

PhotoLab is very powerful software and with enough trial and error you can come close to matching Silver Efex on a single image. The BW “digital emulsions” in FilmPack look like desaturating a colour photo, not like a BW photo/negative. They are more or less useless.

If you have access to any version of Nik, use Silver Efex for your BW versions, unless you are a masochist or prefer desaturated colour images instead of credible BW renderings.


… and Silver Efex is normally much more effective. That´s why I like it and use it.

I have no problem spending an hour on one single image if I feel it´s motivatated but in order to have that time to spend I prefer more effective tools if there are any when I need them.

Of course it does, in your experience with your images and your way of working.

I’m sorry Alec but there, you show that you possibly don’t have the same depth of knowledge of using the FilmPack presets and other tools, from within PhotoLab, than you do using SFX.

So how do you explain how I can prepare A2 B&W prints for exhibitions that match, in every aspect, the silver halide prints that Harman (Ilford) turn out from my 5" x 4" B&W negatives?

Personally, I can’t stand the SFX UI and, despite several attempts to use it, have absolutely no inclination to waste more time fighting with it.

OK, the gauntlet is down :person_fencing: You send or make available a RAW image file, along with a TIFF result from editing it in SFX and I will use PhotoLab and FilmPack to recreate the same result.

I await your files :stuck_out_tongue_winking_eye:

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We’ve already done this with one of your images. You had your PhotoLab version of a desaturated colour image and starting with that image I was able to create a much more BW film version of the image.

I don’t know how much BW film you shot and how many prints you developed in BW yourself. I date from the epoch to have done this. Smooth mid-grey desaturated colour images do not make impressive BW image. BW photos rely a wider gamma of contrast for their effect. Crowding the shades of grey into the center of the tone curve makes for very boring images.

If that’s what you want, leave the images in colour then.

I may decide to do another extended demo on BW images but not soon. Sorry.

Not true. You were able to create your idea of what you think a B&W print should look like.

When I shoot film, I shoot 5" x 4" film, exposed using the Zone System to give me the most flexible negative that can be printed without blocked shadows and every tonal detail visible if possible.

That is my style of B&W photography, which I have carried over into digital. Maybe you like the “soot and whitewash” look to your prints - I don’t, except for certain types of shot…

You commented on my B&W Jazz musician images with “All of these images would look a lot better processed in Silver Efex” - but only if the intent was to satisfy your idea of a B&W image.

My images look like they do, not because PhotoLab can’t produce your desired look and feel, but because I choose to use it in a way that produces my idea of a B&W image.

I can reproduce any style of image and often do when preparing prints for other photographers’ exhibitions.

Which is why I suggested you send me before and after versions of one of your images, so that I can reproduce it as you would, but in PhotoLab.

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try again - effect is not reproduced.

@uncoy Take the bet !!! Show your sportsmanship !!! :boxing_glove: :boxing_glove: :boxing_glove:



Hmmm. Still no reply from @uncoy.

Still working on difficult example, but I think that he will deliver. So you have time to prepare you equipment :grin:
The crowd is waiting and enjoy popcorn and drinks


not sure where’s that going, why are you asking someone that have no experience with nik collection (silver efex in this example) to compare it with PL that is the only software she’s using (with presets as mention above)? which couldn’t replicate nik from PL as the house by the water image above.

brief answer, you don’t ask a plumber to do your electrical =/

You’ve got that back to front. Alec keeps on insisting that PL cannot do B&W as well as SFX.

It’s up to him to provide me with an image that he has produced in SFX, according to his taste, and for me to use PL to replicate the result he has from SFX.

Well, PL isn’t the only software and I virtually never use presets.

The comparisons I made were approximations of how you can replace certain tools from SFX in PL, and would require more time and effort to get a perfect match.

I would be careful with that kind of statement until you realise that you are talking to the granddaughter of a mechanical engineer, the daughter of a civil engineer, an automobile engineer in my own right and have all the skills necessary to have re-plumbed and rewired several houses, including installing gas-fired central heating - all fully approved by the relevant authorities.

Oh, and I have 60 years of photographic experience, both film and digital and regularly print exhibitions for other photographers.

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unions disapprove !

Hey, they were my houses, since when do DIY projects need union approval?

When you come and do mine. I have a long list of my half finished and poorly conceived projects that need cleaning up - though paying in Sterling with tax on top might make it uneconomic.

Bloody Brexit :joy::joy:

Nah. I maintain my UK bank account and I’m not VAT registered.

But you’ll have to wait until we can get our present house sorted. What with age and infirmity, I can get down, it’s getting back up that’s the problem.

Tell me about it. Some of my UK suppliers will no longer ship to Europe due to administration costs. And our neighbours, who are British, and sell plant seeds, have had to quit selling to the UK because each packet of seeds requires a phytosanitary certificate, which makes them unaffordable.

depending on the local codes (so it depends, not a general rule in the world) such things might require a work to be done by a somebody who is formally certified and licensed ( and who knows might be in a union too ) … and anything that you do yourself taking money out somebody’s else pocket :slight_smile: … what is next ? you will write a raw converter yourself instead of buying it from DxO every year ?

that was a very good thing actually … now I am hoping for Scotland to finally deliver a decisive blow and secede… to that effect people who can’t speak Scots language shall not be allowed to vote !

It was bad enough that British people were excluded from the referendum, just because they lived in Europe for longer than 15 years.