Bahtinov Focus Tool for DSLR Camera Lens

Bahtinov Focus Tool for DSLR Camera Lens

$34.99

Shipping calculated at checkout.

Never worry about blurry stars again. Get perfect focus for astrophotography every time with a bahtinov focus tool.

If you've ever spent hours trying to manually focus your camera on the stars at night, you know the struggle. A bahtinov focus tool will cut your setup time down to mere minutes with ease. 

the lagoon Nebula

The simplest, easiest to use Bahtinov Focus Tool for camera lenses.

 

Clips to the Exterior of the Lens

The tool clips to the exterior of the lens, allowing for easy mounting and dismounting, even in the dark. Removing the mask won't bump your focus ring.

Three sizes are available to fit lenses with an exterior diameter between 60 and 120 mm. Be sure to measure the exterior diameter of the lens or dew shield for the best fit. 

the orion nebula

Article: How to use a Bahtinov Focus Tool with a DSLR camera

Bahtinovs are easy to use. Before attaching the device, aim your lens or telescope at a bright star and manually adjust the focus of your lens or telescope until it looks close to focus. Then, gently attach the bahtinov. The mask will diffract the light into three spikes. Adjust focus until the middle spike is centered, then carefully remove the mask to begin viewing.
This product is NOT a medical device.

Bahtinov Focus Tool for DSLR Camera Lens
Bahtinov Focus Tool for DSLR Camera Lens
Bahtinov Focus Tool for DSLR Camera Lens
The Milky Way Core
Soft tips to protect your lens
The Lagoon Nebula
Bahtinov Focus Tool for DSLR Camera Lens

Customer Reviews

Based on 34 reviews
82%
(28)
12%
(4)
6%
(2)
0%
(0)
0%
(0)
R
Rob
Super bright star otherwise useless

Arrived no problem, only realised it from USA when during shipping tracking saying leaving USA city etc (so I thought maybe hassle returning etc / not worth cost) etc.
1st time I tried it moonless clear sky,pitch dark night, zero light pollution, north Scotland, sky full of stars but no matter what star I tried it was useless, too faint on live view. Sony a7iii, samyang 24 f2.8, Sony 70-200 f4 even my sigma 14mm f1.4 DN. No X showing on live view up so I consigned this to my junk drawer.
Then I got the 60 day review email & tried it again on my old Sony a7 full spectrum modded, samyang 135mm f2, 1 day after full harvest moon with Jupiter (close by) as subject. Live view zoomed in & Jupiter showed up fine with usable X in live view.

So it works at 135mm on Jupiter but not my wide lenses. For wide lenses I use my screw on star eight filter (which works perfectly on southern hemisphere : capetown) on my 24mm f2.8.

I’ll keep trying this mask, some nights it’l work & others not so. But Mega bright objects req.

D
Dave Twell
works great

excellent bahtinov mask, the fine patten works on my 50mm, 135mm lenses and my refractor scope perfectly with a dslr or dedicated astro camera, it even worked on my 30mm guide scope. Very satisfied with this mask and would highly recommend.

V
Vijay Shah
Bahtinov Mask for DSLR

This is a perfect tool and works very nicely with my Canon camera. I am highly satisfied with the results.

A
Anonymous
Gets the job done.

Works great on DSLR telephoto lenses. Definitely recommended.

B
Ben Gedzyk
Good news and bad news

This mask works good as intended. No complaints there. The problem I have is that it came to me dinged up, thin metal ring has dents, and there is some sort of adhesive smeared all over the back side of the mask. I tried to clean it but it won’t come off. Poor quality control. I emailed Johannes Scientific about this and never heard back. It functions well but looked used and abused. It did come sealed so it’s a manufacturer’s issue. Still, Johannes should pay closer attention to what they sell.

123