Astronomik Canon EOS XL CLS clip-filter (no filter IR)

• This Astronomik CLS EOS XL Clip Filter uses the Canon EOS Clip format designed for full frame Canon EOS cameras that have an IR blocking filter over their detector
• Your Canon EOS camera's standard operations such as focus, image stabilization, etc. will not be influenced by using this filter
• This filter has been optimized to simultaneously block out as much spurious light as possible while providing the best performance for desirable wavelengths
• The CLS Filter is a great for photographing deep-sky-objects with telescopes or photo lenses of all apertures, operating at f/3 and above
• Makes for an excellent light pollution filter as it blocks the light of the spectral lines of mercury and sodium-vapor lamps
• Made in Germany, a country known for producing optics of superior quality!
• Compatible with full format Canon Cameras 5D Mk II, 5D Mk III, and 6D
• Please note that Astronomik XL Clip filters will not work with the Canon 6D Mk II, 5DS, 5DSR, and the 5D Mk IV camera bodies, and will only work without LiveView with the Canon 5D Mk I

The Astronomik CLS EOS XL Clip Filter is suitable for use with full frame Canon EOS DSLR Cameras under light-polluted conditions, for astronomical use. This filter further highlights the contrast between your selected object and the background. Due to its wider transmission curve compared to UHC filters, a greater quantity of light will be transmitted by this CLS filter. Stars will appear less dim. This filter has been optimized to obstruct the greatest amount of spurious light possible while, at the same time, providing the finest performance for desirable wavelengths. Does not block long-wavelength Infrared light.

By impeding the spectral lines of mercury and sodium-vapor lamps, but allowing a large portion of visible light and H-alpha emissions to get through, the CLS filter efficiently restricts most encompassing light pollution, which can ruin your images. This filter is designed for use with lenses of all apertures, operating at f/3 and above.

With the Astronomik EOS-XL Clip Filter, astrophotography with DSLR cameras is possible even with severe light pollution without shifting the white balance. All Astronomik filters are parfocal with all other Astronomik filters. There is no drop in optical performance. This filter is impervious to scratches, as well as the effects of aging and high humidity. Astronomik filters include a superior quality, long-lasting plastic storage container.

Astronomik's exclusive Clip-Filter system is made with black anodized aluminum and laser-cut on contemporary machinery. EOS XL full frame clip filters are designed to be used with full format Canon Digital SLR camera bodies such as the 5D Mk II and 5D Mk III. This clip filter can be inserted into the Canon EOS camera body within seconds using nothing but your fingers. Removal is just as easy. No tools or adjustments are necessary, and all lens functions such as focus, screen, and image stabilization, are unaffected. The Astronomik Clip-Filter system also shields your sensor from dust accumulation when taking extended exposures. Unfortunately this filter is not compatible with the Canon EOS 6D Mk II.

• 92% transmission at 486 nm (H-beta)
• 92% transmission at 496 nm (OIII)
• 92% transmission at 501 nm (OIII)
• 97% transmission at 656 nm (H alpha)
• Passes wavelengths from 450 nm to 540 nm and from 640 nm and above
• Passes Infrared wavelengths