I've read through many of the spotting Q&As here, but was wondering if spotting with pens or other materials changes the finish of the paper, ie, would the spotted blemish look glossy on satin or matte paper? Or vice-versa? Can you see the spot by holding the paper at an angle, etc...?
Depends on the surface to an extent, RC glossy tends to show the spotting much more than say a semi-matt.
I have only ever used Tetenal spotting pens which are very good on small spots and the spotting tends to disappear after it has been applied for a while but certainly gloss is by far the most difficult surface to spot.
Most viewers who aren't looking for the spotting would not notice. Trick is to spot lightly and use a pen whose shade is slightly lighter than the surrounding area. You can always go darker and apply more.
Good as they are, I'd do almost anything to avoid the need for spotting in the first place.
Never tried those - I'm quite partial to the SpotPens brand of spotting pens. The tip can produce a spot as small as a size 00 brush, or with more pressure applied you can fill a fairly large area. The ink sinks into the paper surface so they don't show when they're dry.
I started this thread almost 4 years ago, and what I've found is that regular Spotone or the Peerless watercolor cards (from Freestyle) do the best job. I use a tiny brush 00 or 000...