Sigma BP-51 Battery Large Package A Special Low Dispersion (SLD)

A Special Low Dispersion (SLD) lens and one high refractive index SLD lens provide excellent correction for all types of aberration and distortion

the weight of a DSLR and attached lens are suspended on the front of the backpack

Three illumination patterns provide total control over flash coverage and the easily accessible A:B mode enables wireless control of multiple flash units

4m closest focusing distance

In addition to the microphone's native 40Hz-20kHz response a selectable high-pass filter at 80Hz is available

Sigma BP-51 Battery Large Package A Special Low Dispersion (SLD)This rechargeable lithium ion battery from Sigma is compatible with the dp Quattro, dp2 Quattro, and fp cameras.