1. Why is GREY_SCALE3 interpretation being used on 16-bit color data 
when it isn't on 24-bit data? (source/image.cpp, near line 540). This 
winds up getting only effective five out of fifteen bits of elevation 
precision.

2. When reading 16-bit grayscale TIFFs, shouldn't the Image->Image_Type 
field be set to IS16GRAYIMAGE? GeoTIFF elev data can't be used as 
heightfields correctly without this.


Ray Gardener
Daylon Graphics Ltd.

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