Amazon is creating a double dip of their own: they have the Canon EF 17-40mm f/4L USM for $639.00, and the Canon EF 135mm f/2.0L USM for $889.00, after $100 mail-in rebate. This is after a price drop equal to the value of the rebate ($100), effectively creating a double dip for you. This is the lowest price we’ve seen for both these two lenses in four or five years.

Recall that last week they discounted the 35L by $150 for one day, the amount of the rebate. It seems like they’re going through the lenses one by one and applying the discount. Here’s to hoping that a $300 double-dip on the 24-70 II is next.