[magick-users] TIFF conversion error

[Michael Ashton]

With ImageMagick 6.3.3.0 Q8 (dll) on Windows XP Pro SP2
 With ImageMagick 6.3.2 compiled from source on Mac OS 10.4.9
The following command (pseudo):

convert MyImage.jpg MyImage.tif

returns the following errors:

Unknown pseudo-tag 65537. `TIFFSetField'.
Unknown pseudo-tag 65538. `TIFFSetField'.

The image appears to convert OK and is readable.

By adding a (any) -compress option e.g.,

 convert MyImage.jpg -compress None MyImage.tif

No error is returned.

No other options seem to have an effect.

ImageMagick 6.2.8 does not return this error under the same conditions.

Tried with multiple images and multiple input formats.

Is -compress now a mandatory option for TIFF on Windows?

Am I missing something else?

Michael Ashton