The Canon BG-E11 Battery Grip is an optional battery grip with improved ergonomics designed specifically for the Canon EOS 5D Mark III, 5DS, and 5DS R. It allows users to load a choice of one or two LP-E6 battery packs. With two packs, the already-impressive battery life is doubled, compared to using a single LP-E6 pack in-camera. This is especially useful when taking advantage of the camera's movie mode or Live View mode operating modes that use more power. In addition, with the included battery magazine, you can also run the camera off six AA batteries.

The BG-E11 also provides full vertical shooting controls, which can be independently turned on or off as the photographer needs to enhance camera handling, especially for shooting vertical pictures. It has a large number of operating controls as well shutter button, Main Dial, multi-controller, AF point selection button, AE lock/FE lock button, AF start button, and multi-function button.

The Haida Multi-coating Circular Polarizing (PROII) filter helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. The light from the sun naturally becomes partially polarized due to reflecting off electrons in air molecules, causing the light to scatter into what appears as haze. A polarizing filter arranges, and filters, this directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of this light. This results in a noticeable reduction of glare and reflections from non-metallic surfaces and an increase in the saturation of skies and foliage.

A circular polarizer only differs from a linear polarizer in that it contains a quarter wave plane in addition to the linear polarizing filter. The addition of this quarter wave plane is to circularly polarize the linearly polarized light for the use of auto focus and exposure functions. Due to how the light is broken down and filtered with a linear polarizer, auto focus and exposure accuracy become skewed during use. When the light becomes circularly polarized, it permits the use of these functions.

Haida MC C-POL (PROII) filters are constructed from high quality glass for increased optical clarity and color fidelity. They feature an aluminum filter ring for durability as well as jamming prevention. This filter is both an anti-reflection coating as well as a protective surface. It helps to increase light transmission by reducing reflections, scattered light, and ghosting. Additionally, it offers greater protection to the filter substrate and stays cleaner for longer than uncoated filters.

• Digital water proof and scratch resistant multi-coating offers both protection to the glass and helps to improve light transmission and image quality.
• High quality aluminum filter ring helps to prevent jamming and provides additional strength.
• Constructed from high quality glass for optical clarity.
• The slim filters are specifically designed for use with wide angle lenses.