Canon's enthusiast APS-C DSLR from 2007 with 10.1MP sensor, robust build, and reliable 9-point AF.
The Canon EOS 40D was released in August 2007 as Canon's prosumer APS-C DSLR, featuring a 10.1MP CMOS sensor, 6.5fps burst rate, and weather sealing in a magnesium alloy chassis. No video recording is supported — the 40D predates the Canon DSLR video era that began with the 5D Mark II in 2008. Single CompactFlash card slot. At approximately 740g with battery and card, the 40D targeted event and outdoor photographers who required speed and weather sealing.
The 10.1MP APS-C CMOS sensor pairs with DIGIC III processing. The 9-point AF system provides standard acquisition. Burst shooting runs at 6.5fps. No video recording — stills only. Weather sealing is built throughout the magnesium alloy chassis. Battery life approximately 800 shots using the BP-511A. Body weight approximately 740g with battery and card, single CompactFlash card slot.
The 40D's 6.5fps burst rate and weather sealing positioned it as the prosumer choice for event and outdoor photographers in 2007. The 10.1MP CMOS provided a resolution upgrade over the 8.2MP 20D/30D, and DIGIC III improved processing speed for reduced buffer clearing times. The 40D represented the practical ceiling of APS-C DSLR performance at launch, before the 50D's 15.1MP in 2008 and the 7D's 18MP plus enhanced AF in 2009.
On the used market the Canon EOS 40D is very affordable as a vintage prosumer APS-C DSLR. Condition checks: shutter count via EXIF (rated 100,000 actuations), CF card slot contacts, BP-511A battery health — shared with the original 5D, 20D, 30D — and weather sealing at port covers. No video. Compatible with all Canon EF and EF-S lenses.