Carnival of Digital Cameras and Photography is a weekly round-up of all the latest news, trends, digital camera reviews, top blogs, photography tips and professional advice.

This week, we have a new carnival host. John Koontz, who runs SyncSpeed, a site on digital photography for the time challenged. His debut with Carnival of Digital Cameras & Photography #39 features a debate about third-party lenses and snobbery with camera purists, composition in landscape photography, Nikon's DX2 update and a review of the Canon 30D.

The Carnival of Digital Cameras will run weekly. To find out more about the carnival, see my main Carnival of Cameras.

Tags: digital cameras, carnival, cameras, news, photography