With more than 160,000 downloads, BJP's award-winning iPad app continues to top the charts on iTunes' Newsstand, as its fourth issue is released today.

The new issue, which is optimised for the retina display of Apple's latest iPad, features the work of Thomas Ruff, Peter Fraser, Simon Roberts, Olivia Arthur, Maria Gruzdeva and Julían Barón, among many others.

We also profile four photographers in our cover story – Owen Silverwood, Josh Cole, Seamus Murphy and Timothy Saccenti – who have made the move from still imagery to the world of music video as they bring their style to the genre with their new music video-makers, including Seamus Murphy and his work for PJ Harvey and Owen Silverwood, who, along with Dave Bullivant, has created a series of videos for Jon Hopkins.

In the fourth issue, we also look at the best iPad app portfolios and report back from the International Fotobook Festival.

We review the Canon EOS 5D Mark III and Nikon D4, and look at how both cameras fare in low-light conditions. And, in an exclusive feature for BJP, we've asked Magnum photographer David Hurn to review Fujifilm's X-Pro 1 compact interchangeable lens camera.

The new issue is available now as an in-app purchase for £6.99, or with an iPad subscription (£9.99 for six months, or £18.99 for a year).

"The team have worked hard to bring a completely new version of BJP to the tablet, and we have stuck to our guns in terms of making it a completely immersive and interactive experience worthy of a premium price. With downloads topping 160,000, and paid subscribers getting close to the number of print subscribers, we are excited about the future," says Marc Hartog, group publishing director.

For more information, visit www.bjpapp.com. To download the app, visit the iTunes store.