[GRASSLIST:3295] SRTM data are not truly projected?

[tatel at euskalnet.net]

Hi all,

I'd read this on SRTM_Topo.txt from srttm download site

############# Quoating ###################################
This sampling scheme is sometimes called a "geographic projection", but of
course it is not actually a projection in the mapping sense. It does not
possess any of the characteristics usually present in true map projections,
for example it is not conformal, so that if it is displayed as an image
geographic features will be distorted.
###########################################################

Does this mean I need to rectify SRTM data in order to make coincident
with a MrSID image?

Thanks,

Roman