Celestron – EclipSmart Safe Solar Eclipse Telescope and Camera Filter – Meets ISO 12312-2:2015(E) Standards – Works with Your Telescope, Spotting Scope, or DSLR Camera – Observe + Photograph Eclipses

I tested this filter out against a lot of other ones and while this one wasn't the best, it did have the virtue of being the most versatile. The ability to collapse or expand the opening to fit a lot of different telescope and camera lens sizes is very handy! And it has excellent design and construction for what is basically a paper-craft project with a bit of solar filter film super-glued to a bit of cardboard. The directions are a bit hard to follow because of the uneven drawing skills of whomever did the art, but once you have the idea, it's fairly easy to construct and get it into the proper configuration. The solar filter is obviously not H-alpha quality, so you won't see solar prominences, but I was able to make out sunspots without too much difficulty. The color balance of the filter is also fine, tinting the sun to the orange-red side of the spectrum, which reduces eye fatigue when keeping the sun under longer observation. This will work fine for the coming eclipse or for any other solar observation use!

I travelled to the US-Canada border with a few cameras and used this filter to capture the total eclipse on April 8, 2024. It's a square cardboard item, but the filter is professional grade, and I used it for two Nikon DSLRs and a Canon Pro HD video camera. Perfect results.

I use this filter on my Canon R7 and am pretty happy with it. It doesn't fit securely on the RF 100-400 mm lens, too big and not sure how to adjust down. The best thing in my opinion is how it gives the sun a nice yellow orange color (first and third pics), much nicer than the white image I get from a more expensive glass ND 16.6 stop filter (second pic taken a few days later). However, it's not as sharp as that filter and there is a glow around the solar disk, which is aesthetically pleasing but more an artifact of the filter rather than true to life. Nit-picky I know but there it is. I like this Celestron filter and trust that it's protecting my gear from damage. Pretty good for 20 bucks.

My son is a amateur photographer. He wanted this for the eclipse and for solar pictures. Works great, fit on the camera just fine. Allowed great viewing safely. Read the directions as it does say only use this for 3 minutes at a time to prevent damage. So you have to take breaks while shooting. Great affordable way to capture the eclipse.

This is exactly what you would expect. A simple foldable cardboard piece with a round filter in the middle. You must use provided rubberbands to secure the folder structure to a lens or telescope. The filter is effective, but not durable. Overall, it is overpriced for what you get. Good for single use, like an eclipse, but would not stand up to regular use. Should be almost ten dollars less than what I paid.

Pretty easy to put together for almost any normal sized DSLR lens and most small - medium telescopes (Check your lens diameter first!). Good quality plastic style film provided a good quality image through the scope. Great for any general solar photography or viewing and a lot cheaper than a specialized high stop neutral density or white light filter.

This was perfect for photographing the Sun and not damaging my equipment or my eyes.

Put this on a telescope and a camera. Did not work on either one of them. I looked through it with the naked eye and could not see anything. No outline of the sun and or any indicator that the sun is there. The filter is terrible, the fit needs to be perfect since it’s made of paper. Easy to use but cumbersome to set up. But not bad.