Digital BW, The Print

Jerry, Michael, & John,

This 'Stair Interpolation Action' seems to be simply an action to upsample
in 10% increments using PS's standard bicubic interpolation. It just goes
into Image size and increases the image size by multiples of 10% with
resampling checked. So the SI 1.5x upsamples by 10% five times, and the SI
2x repeats that cycle a second time.

Apart from putting it in an action, it's nothing new; TonyHath posted a
query about the same method a year or more ago:-

I recently returned from a trip to the Antarctic with a bunch of
photographers including John Shaw of nature photography fame.  He has got
into digital imaging quite extensively and told us something which I found
very interesting.  By upsizing in increments of 10% there is no loss of
identifiable definition.  He says you can do this many times.  If you go
over
10% the quality will suffer.  Anyone familiar with this procedure?

It seems to work; perhaps someone could say why; I don't think anyone
replied to Tony last time.


Bob Frost.


----- Original Message -----
From: "johnvphoto" <jvlist@...>
>
> I'm not Jerry but here is a link to the Stair Interpolation Action - it's
> free...