Ricoh's GXR modular camera system came out well over two years ago, but the company's continued to improve its performance with new lens and sensor hardware. Today it's the software getting a boost, though, with firmware version 1.50 bringing a range of new features. The list includes ISO bracketing of three different exposures, ISO sensitivity settings that go down to a third of a stop, the ability to shoot single RAW files without an accompanying JPEG, an auto ISO setting in manual mode, a useful-sounding function that locks exposure settings if you keep the shutter halfway pressed after taking a picture, and more. You can download the update from Ricoh's site, but it might be the last time you have to do so — the last item on the v1.50 changelog states that "Firmware version updates can now be done from the menu."