Here is an example of a picture from Moscow 1978 run through Topaz.
Topaz has an interesting feature called Text Enhance. It definitely helps making text more readable. There is also a feature called Recover Faces that often is far too much because it often smears the faces hopelessly. It sometimes even starts to enhance and smear faces on statues which sometimes gives really strange effects.!! So here I did not use it.
Even the use of Denoise has to be done carefully since it often gives pretty unpredictable results. Still, I think it mostly is far better than the results I can get from Photolab with these pictures taken with Agfa CT 18 and CT 21 color slide film that have an often very coarse grain. (18 and 21 DIN is in Deutsche Industrie Normen and is equivalent with ASA/ISO 50 or 100). The left and original picture was originally processed with Photolab and exported in JPEG.
When it comes to grain I like fine grained Kodak- or Ilford-film simulations. It is preferably added after everything is fixed in Topaz. These can also help a little to reduce the unwanted original grain
Feel free to zoom by dubbelklicking
Mark up for the Text Enhance
You have to zoom a lot then the difference is very obvious