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Technical Support Professor Newman on… Attack of the hacks The manufacturers may not like them, but a wellchosen hack can add functionality to your camera The latest photography kit and technique at your fingertips One of the interesting things to have emerged in recent years is the phenomenon of the camera ‘hack’. First, it is important to determine its meaning. From the 1960s, hacking was the term used to describe what talented computer programmers could do – they could hack out code. Nowadays, it has gone on to mean any illicit programming activity, no matter how small, from compromising security on computers to making devices do things that the manufacturer did not intend. It is this latter use of the term that is relevant in this week’s column. The fi rst widespread camera hack was the ‘Canon Hack Development Kit’ (CHDK, visit http://chdk.wikia.com/wiki/CHDK), which started back in 2009. This exploited the mechanism that Canon provided for users to load new fi rmware onto their cameras. By examining the data in the fi rmware download, hackers could discover the type of computer chips that the cameras were based on, and from the data sheets for the computers they could identify much of the way in which the camera worked. Then they started writing their own software for the camera, adding new functions that they wanted in their cameras. They gave raw fi le and video capability to cameras that didn’t have it, remote-control facilities and the ability to control the camera via scripts (small pieces of high-level software). From CHDK came ‘Magic Lantern’ (www.magiclantern.fm). This was directed specifi cally at motion picture usage (I differentiate from ‘video’ intentionally), adding to Canon camera facilities that would be useful to fi lmmakers, moving them closer to professional cinema cameras. Video has been a potent driver for camera hacking. A well-known ‘Nowadays, hacking means any illicit programming activity, however small’ All these cameras can be significantly enhanced with camera firmware hacks Ð but it voids the guarantee camera hack is Vitaliy Kiselev’s ‘Ptool’ (www.personal-view.com/ faqs/ptool/ptool-faq). Ptool is a piece of software that can modify Panasonic fi rmware images, allowing new facilities to be added to the fi rmware. Rather than a complete package of enhancements, such as those found with CHDK or Magic Lantern, Ptool is used to add selected functions to the fi rmware, and there are a number of specifi c packages available with it. One of its most popular applications has been to increase the video data rate with the GH-series cameras, providing better video quality than that which Panasonic originally provided. Initially, Panasonic tried to stop the use of Ptool, until it became clear that its use was increasing the fi rm’s sales. Vitaliy Kiselev was also behind the Nikon Hack (https:// nikonhacker.com) – unsurprisingly structured in a similar manner to Ptool and called ‘Nikon Patch’. The Nikon Hack was very much video-based, trying to relieve some of the specifi cation weaknesses that Nikon cameras had with respect to video. There’s one thing worth noting about all the various hacks mentioned here: they will void your camera’s guarantee, so, if they fail, you are on your own. Manufacturers do not generally approve of them, and recently Canon has taken measures to prevent Magic Lantern from functioning on some of its cameras. To me, this seems strange, because the new capability enhances sales. I would think that a more measured approach would be to open up the camera’s application programming interface and enable a market in certifi ed and quality-controlled camera apps, similar to that with mobile phones. More great pictures More technique More opinion More inspiration ● Download online, enjoy offline ● Buy from the comfort of your own home ● Available the day the magazine goes on sale ● Missed an issue? Simply download a back copy Try it today www.amateurphotographer. co.uk/digital-edition Bob Newman is currently Professor of Computer Science at the University of Wolverhampton. He has been working with the design and development of high-technology equipment for 35 years and two of his products have won innovation awards. Bob is also a camera nut and a keen amateur photographer subscribe 0330 333 1113 I www.amateurphotographer.co.uk I 14 May 2016 59
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