Index

Manuals

	Nikon	Tokina	Sigma	Tamron
Material		Coated paper	Coated paper	Paper
Pages		one huge folded sheet	one huge folded sheet	one huge folded sheet
Languages		One	Eight	Eight
Stupid Warnings		50 %	15 %	3 %*
DOF Tables?		Yes, meters only	No.	No.
Shared?		Two lenses	No, but covers Canon version, too.	Two lenses
User Perils*	May catch fire if cap left off.	Blindness, suffocation, child injury from fallen lens and fire.	None. Only safe lens tested.	Damage to your camera if you touch the focus ring in AF mode. Blindness, fire and child injury if lens falls on them. Suffocation from strap. "Do not use lens except for photographing."
Overall		DOF Tables useful		Warns of damaging lens if you hold the focus ring while camera is focusing.

* Stupid warnings from the manuals. Tamron includes a separate sheet of warnings in addition to the manual!

Warranties

This is how I interpret what I found in the boxes I saw. I can't vouch for what you'll get since I don't know where, when or how you're getting yours.

	Nikon	Tokina	Sigma	Tamron
Document		card	big blue folded sheet and card	Folded survey card and multipart NCR form
Languages		one	eight	one
Valid		Not specified	WW including USA.	50 US States
By	Nikon USA	THK PP	Sigma	Tamron USA
Time*	5 Years	3 years	1 + 3 = 4 years**	6 years
S/N filled in?		by hand in pen	by computer in glossy ink w/barcode	No.

* In USA.

** The lens I borrowed had cards listing Sigma in Ronkonkoma NY and only 1 year. Sigma tells me this lens also comes with an additional 3 years of coverage for a total of 4. Looks like I was missing a card. Weird.

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