The 150 x 170mm Star Soft Astrophotography Filter from NiSi is designed to make stars and constellations appear bigger, making them stand out from the background. The brighter a star is, the bigger it will appear, making it sparkle in the night sky.

This 150 x 170mm filter is 2mm wide and fits most standard filter holders with a 150mm capacity. Taking a design cue from graduated neutral density filters, the lower 60mm of the filter is clear, so it may be positioned to enhance the stars without affecting the foreground. The Star Soft filter has no light loss and offers a neutral tone with no added color cast.

Enhances Stars for Astrophotography    150 x 170mm Size, 2mm Thick    No Light Loss    Neutral Tone, No Color Shift    60mm Clear Area without Effect

Related Questions and Answers

Q: 1. What material is this cap made of?

A: It is just like the original soft lens cover that comes with the sigma 150-600 Sport lens. I think it is made of heavy nylon outer, soft felt liner and velco

Q: 2. Is there a one to one comparison of this lens vs the Sigma 150-600mm f/5.6-6.3 somewhere on B&H (i.e. actual users who have experience with both lenses, rather than online detailed technical reviews)?

A: Not really, no. While each lens has a Reviews tab where customers who own the lens in question may post their review or experience with the lens, we do not have a side-by-side comparison from customers, and most people do not purchase both lenses. If you wish, you may purchase the lenses to do you own comparison, or you may use a rental website such as a href= http://lensrentels.com target= _blank lensrentels.com/a to see if they have both options available. Otherwise, you would have to use Google to search for reviews from users who have used both lenses, but we have no one spot on our website designed for this usage other than the Reviews tab on the lens' webpage.

Q: 3. Can I use the lens in my Nikon d7500

A: Yes, fully compatible with the D7500.

Q: 4. Will this lenswork with a canon 5D mark II?

A: If you order the lens with the EF Canon mount then yes. This lens comes manufactured with different mounts. I have used it with both my 5D and 7D.

Q: 5. Is this lens compatible with the Canon EOS400D?

A: Yes, it is.

Q: 6. i have a nikon camera with a tamron lens sp150-600mm and it says lens not connected?

A: Sorry that I can't help your exact situation. I use this lens with Canon mount on my Canon 5D Mark II and have not experienced this problem.

Q: 7. Will this lens work on a canon rebel T6?

A: Yes. That's what I am using it with.

Q: 8. You answered the question about the 1.4ext and auto focus but if I use MF on a tripod will the 1.4 and 2x canon extenders work properly using the 5D III. Thanks

A: The Canon extenders are only compatible with a select number of Canons pro level telephoto lenses; they are not compatible with lenses from other manufacturers such as the Tamron 150-600mm. You would need to use a third party teleconverter with this lens (Tamron, Kenko, Vivitar, etc.). Autofocus will not be supported, so you will need to manually focus the lens. http://bhpho.to/1pzmipP

Q: 9. Does the zoom lock work at all focal lengths?

A: No, at the 150mm setting.

Q: 10. What is the total weight of this lens kit(Tamron 150-600mm)...anyone with the knowledge can answer,...thank you very much.

A: Manufacturer Specification Weight68.8 ozActual Weight61.6 ozLens Hood Weight3.4 ozTripod Ring Weight9.5 ozIn-Use Weight74.5 oz