![]() Topaz AI on the other hand I find good for both digital camera noise and film grain. But, so far as I can see, it's rubbish on film grain, it exaggerates it instead of removing it and there are no settings I can find that fix it (yes I tried turning off global sharpening). ![]() I find it's good on digital camera noise and manages to remove it whilst retaining/increasing detail. I just downloaded the trial of DXO PureRaw 2. Have you tried it on slide grain yet? That would be the holy grail. Plus my 2 (and sometimes more) layers workflow. The lack of control means you don't know what you are losing. Putting all my images through an expensive black box like Deep Prime before raw processing is not the way to go for me. This is not something to do if one was working on an industrial scale but very nice for high quality results that pass Alamy QC.įor high ISO digital camera captures, one pass LR noise reduction and downsizing works well enough for most purposes for me. This is usually followed up with downsizing. One conversion uses heavy NR with little or no sharpening for bland areas such as sky and the other uses more sharpening and less noise reduction for details areas. I came to the conclusion that manual noise reduction in LR was the way to go for effective grain reduction in slides - doing two raw conversions and blending them in Photoshop works really well. It is also incredibly resource-intensive and very slow so experimenting with different settings can take ages. I have not used it on my latest M1 machine so that may handle it better if it has been optimised for silicon Macs but they charge for regular upgrades so I am not intending to bother (my version is a few years old). The biggest problems I found with Topaz AI was that it produced strange coloured artifacts around the edges of slide mounts and even within the slides around objects when trying to deal with grain (not noise). ![]() I will try Topaz AI again when the occasion arises. I have used Topaz in the past way before ACR was any good. I may just not have tried hard enough or not the right way with Topaz. However this was trying to find a way to get rid of B/W grain in old negative scans. There was nothing I couldn't achieve with ACR. I've checked it against dfine and plain ACR. I'll DXO Pure Raw to see how it does, but I've not been that impressed with Prime Denoise previously. In spite of the above limitations, I still use V2.4.2 for slide processing but haven't updated in spite of frequent nag screens as the price isn't attractive enough for a minor upgrade. If it decides film grain = noise it will totally remove it, if not it may leave "mottled" areas, so it takes a bit of tuning to see what works. So I tend to use Topaz on a duplicate layer and then blend at 50% with the original. I find that it can remove all noise (which then looks unnatural) and it tends to over-sharpen edges (even on the lowest sharpening setting). ![]() I also use Topaz on a separate layer so I can reduce the effect if needed. ![]() I therefore use the Topaz plugin within PS after conversion from RAW in ACR. In my experience Topaz Denoise AI doesn't work well on RAWs. grain in B&W negative scans or is that a no no? Also do either satisfactorily help in reducing p.m. I’m also interested in which application is the biggest resource hog, as I believe both use AI, as well as making the best job of minimising digital noise. When I get a spare moment I’ll search for reviews. ![]()
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