Warranty

Dealer will not be serviced under warranty regardless of the service required. The Sigma
Corporation of America Service department will service these products but it will be at the
owner's expense.
Courtesy Updating
In today's day and age of ever changing technology Sigma will, at our discretion, offer some
updates if available to the original purchaser of the equipment at no charge. These updates are
done as a courtesy and are not considered warranty repairs. Remember, your Sigma Product
works correctly with the equipment you owned when you purchased it and is not Defective!
Impact Damage
We do our best to repair Sigma products that have sustained damage due to impact, liquid, or
other forces outside of normal use, but there is no guarantee that your item will function exactly
as it did prior to damage. All service is performed using the most exacting methods, but
sustained damage to equipment may prohibit return to the original condition.
AF Data Adjustment
Due to extreme sensitivity of the digital camera mirror box, more than 5 times as sensitive as that
of a film camera, it may be necessary to adjust the AF data in your Sigma lens. At Sigma, we
adjust all of our lenses to a neutral focus point during manufacturing. It may be necessary to have
your Sigma lens adjusted to your own personal camera. This is a known problem with digital
cameras and many companies have included Micro Focus Adjustment capabilities on their high
end cameras to address this problem with their lenses. If you are able to do this with your camera
and lens combination, there's no need to send your equipment in for adjustment.
Technical Support
1-800-896-6858
Repair Department
631-227-2036
Marketing Department
631-227-2017
General Inquiry
631-585-1144
631-585-1895 Fax
Manufacturers’ warranties may not apply in all cases, depending on factors such as use of the
product, where the product was purchased, or who you purchased the product from. Please
review the warranty carefully, and contact the manufacturer if you have any questions.