AV News 187 - February 2012
Photoshop - Pseudo HDR for Older Versions Keith Scott FRPS
In issue No 186 of AV News we discussed 'Lens Correction' found under the
Filters menu and mentioned it's automatic facility for correction of geometric
distortion, chromatic aberration and vignette. Unfortunately I failed to mention
that this automatic function was introduced with CS5 and did not exist in CS4
or earlier. So if you have a version of Photoshop prior to CS5 then 'Lens
Correction' may still exist under 'Filters', 'Distort', but doesn't include
automatic correction or any pre-loaded lens profiles.
Amongst our readers numerous versions of Photoshop are in regular use
and unless a newer version includes functions that you specifically require
then updating to a later version may prove expensive and pointless. Early
versions of Photoshop can often achieve the same or similar result as later
versions by using the available functions with a just little imagination and
ingenuity. Which leads me into this article specifically requested by a reader
using a rather old version and without any HDR plug-ins installed. Although
we have covered HDR previously (High Dynamic Range) it still continues to
be a mystery to some and for those not intending to update then the following
alternative technique may prove useful.
To produce a sharp image HDR
requires the use of a sturdy tripod
or other firm camera support
because several images of
different exposure val Օ́