Convert JPG to TIFF using ghost script

i am trying to convert images from .jpg to .tiff using ghost script.And i have executed following command to do that.

gs -q -dNOPAUSE -dBATCH -dSAFER -sDEVICE=tiffg3 -sOutputFile=sip.tiff -f sipchat.jpg 

But i am getting this errors.

Error: /undefined in �����Exif
Operand stack:

Execution stack:
   %interp_exit   .runexec2   --nostringval--   --nostringval--   --nostringval--   2   %stopped_push   --nostringval--   --nostringval--   --nostringval--   false   1   %stopped_push   1894   1   3   %oparray_pop   1893   1   3   %oparray_pop   1877   1   3   %oparray_pop   1771   1   3   %oparray_pop   --nostringval--   %errorexec_pop   .runexec2   --nostringval--   --nostringval--   --nostringval--   2   %stopped_push   --nostringval--
Dictionary stack:
   --dict:1155/1684(ro)(G)--   --dict:0/20(G)--   --dict:77/200(L)--
Current allocation mode is local
Current file position is 11
GPL Ghostscript 9.04: Unrecoverable error, exit code 1

What is the problem with my command? Any suggestion and guidance will be appreciated.I have to convert my images using ghost script because if i am using the images which is converted by other tools is not being accepted.
Thanks

Answer

Why don’t you just use ImageMagick…?

convert rose.jpg rose.tiff