mogrify -monochrome producing larger images

[bravolingus]

Hi,

I upgraded from ImageMagick 6.4.2 Q16 to ImageMagick-6.4.5-6-Q16 on Windows XP Pro.

I am using the mogrify -monochrome to make sure multipage *.tif images are Black&White.

Since the upgrade, the resulting image size has gone up significantly.
A 1.9MB tif image now results in an 11.2MB image. When before it would be the same size or smaller.

Unforunately, I can not provide example images due to the fact they contain sensitive information.

Anyone else experincing this? Any Sugesstions?

I couldn't find an archive of back versions. Is there anyplace I can download version ImageMagick 6.4.2 Q16?

Thanks.

[magick]

Try adding +dither to your command line. If that fails, post a URL to one of your TIFF images here and the command you are using to convert it. We'll download it and reproduce the problem and come up with a fix and post it here.