Auto brush difficulty

Jerry C

• 2021年12月06日 17:53

I have not used auto mask for a while and had to experiment a bit to get it to work in the latest version 12. It only works if the hardness setting is low enough to see the area between the outer and inner circle of the brush and the area to be auto masked is brushed over with the edge between the outer and inner circle. If you brush anywhere over the edge with the inner circle, auto mask fails.

I can live with this, but my memory, perhaps a false memory, is that the edge did not have to be between the inner and outer circle to work. Hardness setting should have no relevance when auto masking and so it is unnecessarily tedious to have to keep the edge between the inner and outer circle.

 

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  SFA

  • 2021年12月06日 18:13

  Jerry,

  From memory it has always worked that way.

  More recent versions of C1 have introduced some alternative ways to achieve the sort of edge masking that automask was intended for and indeed requires to work at all.  (A good and usefully sharp delineation of the edge being the main requirement.)

   

  Hardness is really quite key to the auto process since a hard edge (as seen visibly) is required in order to properly delineate between mask and nonmask data values. 

  I've always felt that if I don't need the hard edge I don't need the automask and so I can save time by not using it. Colour selections and luma ranges or often better options for me and are also potentially portable self adapting masks across similar images - especially luma values. Auto masks - especially detailed masks - are less portable across images unless shooting very consistent scenes - studio product work for example.

  Or at least that is how I see things.

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  Ian Wilson

  Moderator

  • 2021年12月06日 21:54

  

  I don't use auto mask very often, but when I do, I find that using a hard brush helps keep the edge in the right bit of the circles. With auto mask you see three circles and you have to keep the edge between the inner one and the middle one - easiest with a hard brush so that the distance between the inner and middle circle is greater.

  Ian

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  Jerry C

  • 2021年12月06日 22:11

  Thanks, Ian. That works quite well and was as easy as I recalled. The auto brush sometimes gets confused without an adequate difference in tone between the sides of an edge.

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