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Description
3.97mm f/2.8 82d HFOV 16MP (No Distortion)(No Filter)The 3. 97mm is our newest 4K lens designed for the GoPro HERO camera line. With its 16MP sharp 8 glass non fisheye optics this lens captures the GoPro HERO 4, Hero 3+ and Hero 3 model's 12MP photos and up to 4k (8. 4MP) video. After removing the stock lens the 3. 97mm threads in easily. No need to change to a different lens mount and all GoPro accessories that mount around the plastic black lens surround are supported. No gap is present between the
The 3.97mm is our newest 4K lens designed for the GoPro® HERO® camera line. With its 16MP sharp 8 glass non-fisheye optics this lens captures the GoPro® HERO® 4, Hero 3+ and Hero 3 model's 12MP photos and up to 4k (8.4MP) video.
After removing the stock lens the 3.97mm threads in easily. No need to change to a different lens mount and all GoPro® accessories that mount around the plastic black lens surround are supported. No gap is present between the lens and the black GoPro® lens surround as the 3.97mm lens spans the entire cavity.
No fisheye/barrel distortion means objects are naturally straight and just as your eyes see the world. Mounting to a UAV? You'll be glad to know that's exactly where we mounted this lens the most as we were tweaking its production. See the videos below for examples mounted to the 3DR SOLO.
With the same f-stop as the stock lens the GoPro® software will never know the lens has been changed. Light levels will be handled as normal and depth of field will be very similar.
With it being over 40 degrees narrower than the stock GoPro® lens and 8 degrees narrower than the DJI Inspire and Phantom 3 cameras, this lens brings your subjects closer without being too zoomed in to introduce unwanted image jitter.
If you've thought of changing the lens on your camera but were never happy with the way the lenses on the market handled lens flare, you'll be glad to know that was a major concern of ours during development. We went through many iterations to reduce any "bad", concentrated flare spots and left only minimal cinematic flare. See the "Sunset at Scripps Pier" video below for an example.
| When you change the lens on the GoPro® HERO® cameras we recommend having us remove the stock lens profile software so the colors are natural (and not tinted pink around the edges). All example media shown has this lens profile removed from the camera. |
| Don't want to worry about sending you camera in to be modified? We sell new cameras with this lens installed HERE. |
| Model Number | GP39728 |
| Focal Length | 3.97mm |
| 35mm Equivalent | 22.63mm |
| Fish-eye Distortion | NO |
| Black Vignetting | NO |
| Weight (Stock Lens = 5.5g) | 15g |
| Angle of View (V*H*D) | 65 x 82 x 92 degrees |
| Aperture (f Stop) | 2.8 |
| Back Focal Length (BFL) | 4.65mm |
| Dimensions (Diameter x Length) | 17.40 x 22.48mm |
| Native Camera Sensor Support | 1/2.3" |
| Native Megapixel Support | 16MP |
| Thread Material | Metal |
| Optics Material | Glass |
| Fits in GoPro Waterproof Case? | Yes (Pressure on Lens Will Cause it to Shift Focus, So Use Extended Backdoor) |
| Case Mod Needed? | No (But Puts Less Pressure on Lens) |
| Dust Ring Included? | Yes (DR_A + DR_B) |
Works With These Cameras:
Example 3.97mm Media:
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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★★★★★ 5
Good product
This seems to be working really well. I used to use a different brand of BHA and I like this one better.
I do wish they had an eye dropper version, but it’s fine.
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Reviewed in the United States on April 17, 2026
★★★★★ 5
Works Perfectly
This has improved my complexion greatly. Wrinkles and fine lines are smaller. My pores have shrunken as well
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Reviewed in the United States on February 24, 2026
★★★★★ 5
Good Skincare.
It is Really Good Skin Care. I love how Gentle and good this is on the Skin. I would Highly recommend it.
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Reviewed in the United States on March 17, 2026
★★★★★ 3
Switching back to Paula’s choice
While I like the all natural ingredients, I switched back to Paula’s Choice instead. In my opinion, I think it works better.
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Reviewed in the United States on April 14, 2025
★★★★★ 5
The Best Clean Beauty Facial Sun Screen!
This spring I tried four different clean beauty facial sunscreens. This is my favorite. First, it goes on with a light tint that rubs in, which moisturizers and becomes a primer for my bare minerals powder foundation makeup. Absolutely no flacking after applying the powder. (Many times if I am just out walking, playing pickleball or working in my garden I just wear this and skip the makeup) Second, the scent is so nice and light. Third, and actually most importantly is the rating on Yuka of excellent and that it works very well in the sun. I have worked hard to find only clean beauty products for my skin and I so appreciate of companies that provide them at an affordable price. I highly recommend this sunscreen.
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Reviewed in the United States on April 11, 2026