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From maarten_hofman@hotmail.com:
The caustics might be a bit too much... I like the reflections of the window, though it seems a bit blurry at the same time.
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From tyler@cg1.org:

Sorry, but the water just looks...wrong. Horribly wrong.
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From rgow@lanset.com:
Nicely modeled toilet. Lighting needs work, some of the shadows don't agree with the visible light.

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From mr.kroll@verizon.net:
i feel that whoever used that toilet before this image was taken and forgot to flush should seek medical attention at once! lol, just kidding. 

the floor looks like the cross section of a tree stump, less circular pattern woud have been better, but very good for an inexperienced raytracer, keep at it!
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From jjaguar@worldnet.att.net:
The water in the bowl needs a little more work.

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From slone@hiwaay.net:
Looks like ice in the toilet and the circular pattern on the floor looks odd.
Nice texture for the toilet.