I am trying to decrease the resolution of some psd files. The desired result is also psd. But it seems "convert" cannot handle the transparency in the proper way when the source file is psd. Taking a look into the metadata it appears the Number of Channels is 3 instead of 5 (CMYK + transparency = 5)
I am using ImageMagick 6.5.0-2.
I tried this: 'convert source.psd -alpha on result.psd'
And I tried some other alpha options also like '-alpha set' etc. No success.
I created test files like this http://urbanstudionyc.com/cmykTransparent.psd
Does anyone have any thoughts?