4"x4" Solar Filter Sheet for Telescopes, Binoculars and Cameras

Fell of when i was looking at the sun, im blind now 😔

Full disclosure: First solar eclipse photo op for me! I have multiple total, and partial, lunar eclipses in my experience base but no solar chops! Until now. The Thousand Oaks Optical brand solar filter is quite economical, if you're on a tight budget, or just frugal by nature. And there's also the argument against buying an optical glass, dedicated size, filter for one lens or telescope aperture! The T.O.O. filter is metallized Mylar film, not glass! You can buy the size for the largest lens or telescope you own and then adapt it to smaller lens sizes as needed, with a bit of additional fabrication. I adapted the 4" X 4" filter to fit the sunshade of a 70-300mm zoom lens, which I could fit on, or remove as needed. I fabricated a filter mount from white card stock and Scotch Magic Tape. As such, the fit was secure enough to not need any additional support. If it was really windy, a few pieces of Magic Tape would have secured it to the sunshade!I made some test exposures well before the event started and dialed in a starting exposure and captured the image in pic 1. Sunspots are visible in the center and left of center. Cloud cover interrupted the rest of the event, and pics 2 and 3 are marred by wispy clouds moving across the frame. As my location was several hundred miles east of totality, the eclipse was a partial for me. I was happy to have caught what I did and gained some experience from it too. The filter performed exactly as presented! Please note: The filter can be used, as delivered, by simply folding and taping the corners to whatever optical device you plan to use. However, there's a risk of leaving a gap through which sunlight can pass, causing damage to the eye or optical gear! There are a number of sites online dedicated to amateur telescope making that have information on fabricating and adapting all sorts of gadgets and accessories for astronomy Do it right, you only have one pair of eyes.Safe viewing and clear skies!! Hope this helps

It's a great cheap option for a scope if you can't afford a real filter. Works as it should.

Used it with a Panasonic Zoom Camera and it worked well enough at a fraction of the price for screw-on lens.

I bought this to get ready for the 2 solar eclipses heading through Texas in the next year.I bought the 4". I had an extra UV filter, so I cut the solar filter to fit inside the UV filter. As you can see in the photos, I didn't cut a great circle, but no extra light got into the photo which was a pleasant surprise. It also allows me to tape the leftover plastic to sunglasses to view the eclipse. All for a very affordable price!I wasn't sure which way to install the film... metallic side towards the sun or the black plastic side, so I wrote the seller. A quick reply was that the metallic side faces the sun. Probably avoids the plastic overwhelming and warping.After playing with the settings a bit, I got the pic attached to this review at 200mm zoom with ISO of 500, and stopping down -1 2/3. At that level, I was able to get a sunspot, which can be seen in the lower right corner of the sun! This pic was taken handheld while sitting in a reclining chair. Not bad for an amateur first sun pix. Other pix show the sunspot in the same place, so it's not an imperfection in the filter or lens.For a fraction of the cost of a solar filter, you can get essentially the same thing. That makes it perfect if the solar eclipse happens when it's cloudy making the whole effort moot.

Good quality and the size was good.

This film works ok for filtering the sun if you place it directly over your eyes or glasses. However it lets in entirely too much light to view the sun with binoculars. I’ve since purchased a product made explicitly for binoculars - Rainbow Symphony Solar Filters https://www.amazon.com/gp/aw/d/B00KVVFBV6?psc=1&ref=ppx_pop_mob_b_asin_image which are much darker and work great with binoculars. I’ve found from an optometrist out you can safely test the darkness of filter material by looking at a normal indoor floodlight through the material. With both this material and Soluna solar glasses I can see the light bulb very dimly. With the Rainbow product I am unable to detect any light from the bulb. Again, I think this material works as a solar filter for unmagnified solar viewing, but not for magnified viewing through binoculars or telescopes.

I bought this small sheet of solar film 6 months before the 2024 eclipse to be sure I’d have it on hand and not have to overpay or run into shortages. Then I spent about an hour trying to find the tiny cardboard envelope among all my camera accessories… But I found it in time and assembled a filter to attach to my Canon 100-400mm lens. I trimmed about 1/2 inch off of one side so that it would slide into my screw-on filter holder and secured it to the lens with a bit of painter’s tape so that it wouldn’t slip out of the holder. It worked perfectly, and I was able to capture sharp, stunning images of the partial eclipse (I wasn’t in the path of totality).I saved the film as well as my solar eyeglasses so I’ll be able to enjoy the next eclipse - even if I have to travel to witness it !