B+W 093 Infrared 830 F PRO
Virtually no other digital camera facilitates the use of infrared light with the same ease as the M8, enabling surreal attributes to be introduced into the image – such as the ghostly luminescence of a bright green leaf contrasted against a dark sky. It is well known that, due to a consequence of design, the IR barrier filter in the glass cover of the M8's image sensor is extremely thin, causing raised sensitive to infrared light – so much so, that for conventional photographs it has always been advisable to attach an additional IR cut filter in order to avoid a magenta cast on skin tones and black fabrics.
Yet the M9, M-E and M Monochrom are just as suitable for experimenting with the visual effects of capturing long waves. All that is needed for this imaginative transformation is a lens filter such as the 093 Infrared 830 F PRO by B+W. As is customary for B+W, the finely polished, streak-free filter is cut from premium-grade optical glass. By blocking the entire spectrum of visible light, pure infrared photographs are made possible – with the transmission only beginning to exceed 1% at a wavelength of 800 nm, rising to 88% at 900 nm.
As IR filters require considerably prolonged exposures, the use of a stable tripod is advisable. It would be futile to rely on automatic exposure mode – the best way to determine the optimal exposure setting is through a series of test trials. Achieving the correct distance setting, too, is a matter of practice. As a general rule of thumb for infinity focus under IR conditions, multiply the focal length by 300 – in the case of a 50 mm lens, the result would be 15 metres.
Available in sizes E39, E46, E49, E55