Index: tiff-3.9.4/libtiff/tif_jpeg.c =================================================================== --- tiff-3.9.4.orig/libtiff/tif_jpeg.c +++ tiff-3.9.4/libtiff/tif_jpeg.c @@ -850,6 +850,7 @@ JPEGPreDecode(TIFF* tif, tsample_t s) if (downsampled_output) { /* Need to use raw-data interface to libjpeg */ sp->cinfo.d.raw_data_out = TRUE; + sp->cinfo.d.do_fancy_upsampling = FALSE; tif->tif_decoderow = JPEGDecodeRaw; tif->tif_decodestrip = JPEGDecodeRaw; tif->tif_decodetile = JPEGDecodeRaw;