Use the Alpine Astronomical Baader 0.6 Neutral Density Filter to reduce the amount of light coming into your eye during lunar observation and improve the view and contrast. The lens surfaces are fully multi-coated with Phantom Group seven-layer optical coatings. This maximizes light transmission across the entire visual spectrum, stepping down the light throughput while maintaining color-neutral views without reflections, ghosting, or stray interference light.

Its housing is made to fit most 2" eyepieces and has female threads for stacking it with other ND and colored filters to further improve views when observing planets and other objects. This iteration of the ND filter line has an optical density of 0.6, with 25% transmission and a reduction factor of 4—making it ideal for viewing and photographing the moon at its half-moon phase.

The filter can also improve solar viewing, but only as a secondary pre-filter stacked with a primary dedicated solar filter. Failure to use a dedicated solar filter may result in permanent eye damage up to and including blindness.

Ideal for Lunar Observation    Phantom Group Optical Coatings    Fits 2" Eyepieces and Accessories    0.6 Optical Density    25% Transmission    4 Reduction Factor    Stackable with Colored and ND Filters

Related Questions and Answers

Q: 1. The numbers on the filter dial, are they 'optical density'? What is the maximum density in stops?

A: The KIPON Mark 3 Neutral Density Autofocus Lens Mount Adapter for Canon EF-Mount Lens to Sony-E Mount Cameras would go from 5 stops which is indicated by the 1.5 mark to 24 stops which is indicated by the 7 mark.

Q: 2. Will the adapter and AF feature work with Sigma Art lenses that have an EF mount?

A: Although this adapter has electronic contacts to maintain autofocus and aperture control, we're not aware of any tests made with Sigma lenses with the EF mount. The results may vary.

Q: 3. does the adapter have weather sealing?

A: Unfortunately, this Kipon adapter doesn't offer weather-sealing.

Q: 4. Does the AF and IS diffently work with canon L series, I've read a few reviews saying it doesn't on the mk3?

A: Yes the KIPON Mark 3 Neutral Density Autofocus Lens Mount Adapter for Canon EF-Mount Lens to Sony-E Mount Camera is compatible with the Mark 3 series Sony cameras.

Q: 5. Does this bag hold a full-size DSLR and Canon 600mm F4 lens with the hood attached? Any room for an extra lens?

A: I have a Nikon 600mm and a D5 base. It fits the lens comfortably and I put the D5 on top of as there is a partition between the lens compartment and the top of bag. If you didn't use the top portion for your camera base you could possibly put a 24-70 or smaller in that space. The pockets on the side are great for putting all of your extra gear like cards, batteries, etc.

Q: 6. Does the filter have any colour cast? I'm needing a high-quality filter that doesn't take away sharpness or change the colour is this suitable? Does it allow smooth electronic image stablisation and iris control on canon lens?

A: This adapter will allow for the use of Image Stabilization and aperture control on a Canon EF lens. There have been no reports of a color cast or a reduction in sharpness when using the built-in ND filter.

Q: 7. How is mark iii different from mark ii?

A: This adapter, unlike previous, has autofocus.

Q: 8. Is the bag as good as the Lowepro 600 mm bag? This bag is much cheaper, so I am not sure if it is as well made or not.

A: I'm not familiar with the other bag, so i can't compare. I just got this bag because i bought a 500mm lens and it seems to be a good quality bag.

Q: 9. Hi...Side pocket size is enough to carry Wimbley Gimble head?

A: No, I don't have one, but the ones I have seen (heads) have been large. The pockets are ample in shapebut don't expand much. I love this backpack. So light.

Q: 10. Will it fit the width of a 400 f/2.8 lens?

A: Yes,the 400mm 2.8 will fit without any issues.