This Week in the World looks at tips & tricks, photo news, product releases, and other interesting stories we stumbled across this week.

Using camera technology designed to be used in telescope construction, astronomers in the UK created a “prototype device that can help detect Age-Related Macular Degeneration (otherwise known as AMD) — a common form of sight loss,” a device they’re calling a Retinal Densitometer.

A Montreal-based startup is garnering buzz for its crowdsourcing platform that finds “newsworthy” photos on Twitter and helps the photographers make them available for purchase by news media outlets.

Ever wonder what the 10 most expensive photographs in the world are? Well, now you can find out.

Check out this lesson in cinematic lighting using a scene from the sci-fi noir classic Blade Runner.

Two photo projects that blew us away this week: Detonations by Ueli Alder and Suburban by Ian Strange.

Take some business advice about selling your photos professionally and pricing your fine art prints. Want more business advice? Register for our Photography Business Seminar on August 3.

Sports photographer Brad Mangin offers some tips and tricks on taking awesome Instagram shots.

And in case you missed it . . .

New to You: All Kinds of Canon

Gearing Up: Print with Purpose