Sale!
100mm Milky Way Reveal Focus Filter
Original price was: $59.00.$45.00Current price is: $45.00.
The 100mm Reveal Filter is good up to about a 90mm lens filter size. If your filter on the front of the lens is under 60mm the 85mm size may work better and be snugger. If in doubt about the filter size, each lens generally lists the filter size on the front writing of the lens.
How it works: The Goal of the Reveal Focus Filter is to create six spikes (really there are three spikes that pass through the star but if you are counting them one-by-one I don’t want you confused) on bright stars. There is a main large spike then an X of four smaller spikes. The goal is to get the main large spike centered between the X and centered on the star itself. As soon as that is done BOOM you have perfect focus in as little as 2-3 seconds.
How it works: The Goal of the Reveal Focus Filter is to create six spikes (really there are three spikes that pass through the star but if you are counting them one-by-one I don’t want you confused) on bright stars. There is a main large spike then an X of four smaller spikes. The goal is to get the main large spike centered between the X and centered on the star itself. As soon as that is done BOOM you have perfect focus in as little as 2-3 seconds.
5 in stock (can be backordered)
Additional information
| Weight | 2 lbs |
|---|---|
| Dimensions | 4 × 4 × 2 in |
Thomas M –
It took me a bit to figure this out. The diagram on the box seemed simple but at night it was harder than I thought. I used a 24mm lens and with the live view it was hard to see the pattern. I took a few short images and the pattern just popped. Now I mostly use it to check that focus is perfect. It is very quick and easy after you play with it a few times.
Transient Astro –
Fine focus is really important with astrophotography and this filter does the trick! If you don’t know what a Bahtinov mask is look it up, it’s an easy and accurate way to get to perfect focus on stars. Basically when you get down to it, holding this filter in front of your camera for a second or two while looking through a fully zoomed in live view on a bright star a star spike pattern shows. take some quick photos to get it as sharp as possible and your done! As with most photography accurate focus can be what separates an 8 from a 10.
Michael C. (verified owner) –
First became aware of a similar product on YouTube, checked it out and decided to purchase. Only problem was, the size I needed was no longer in stock. So I began searching and found Dave’s product. I’ve used it several times now and while it’s tough to use with my 14mm lens, it works fine for 24mm and longer. I hand hold it most of the time as using the screws/grommets isn’t necessary. It is now a valued piece of gear for astrophotography. Practice patience while learning to use it. After a couple times, it becomes second nature.
David Lane –
Thanks Mike the 14mm and below is tougher. I’ve had to do 10 second or more exposures sometimes to get the pattern. On some lenses its not super practical. Glad you are enjoying it!