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Description
3.97mm f/2.8 82d HFOV 16MP (No Distortion)(Blue 450nm)The 3. 97mm is our newest 4K lens designed for the GoPro HERO and DJI Phantom X3 camera lines. With its 16MP sharp 8 glass non fisheye optics this lens captures the entire image sensor. This model of the 3. 97mm lens has our Blue 450nm filter cemented to the back of it. The blue channel of the image will contain the Blue light. After removing the stock lens the 3. 97mm threads in easily. No need to change to a different lens mount and all GoPro and
The 3.97mm is our newest 4K lens designed for the GoPro® HERO® and DJI Phantom/X3 camera lines. With its 16MP sharp 8 glass non-fisheye optics this lens captures the entire image sensor.
This model of the 3.97mm lens has our Blue 450nm filter cemented to the back of it. The blue channel of the image will contain the Blue light.
After removing the stock lens the 3.97mm threads in easily. No need to change to a different lens mount and all GoPro® and DJI accessories that mount around the 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. On the DJI cameras a small gap will be created as the lens is not as large in diameter as the stock lens.
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 on the GoPro® and DJI cameras the capture 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 X3 and Phantom 4/3 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 | GP39728BLUE |
| Focal Length | 3.97mm |
| 35mm Equivalent | 22.63mm |
| Fish-eye Distortion | NO |
| Black Vignetting | NO |
| Weight (Stock Lens = 5.5g) | 7.18g |
| 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) |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.7 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
Tasty World Flavors for My Baby
Flavor Name: World Explorers Variety Pack, Size: 3.5 Ounce (Pack of 18)
I got the Serenity Kids 7+ Months World Explorer pouches to introduce my baby to more flavors. Each pouch is inspired by a popular dish from a different country, which makes mealtime fun and adventurous. They’re not meant to replace meals but are perfect for adding variety. Healthy and highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 19, 2025
★★★★★ 5
Always a Hit!
Flavor Name: World Explorers Variety Pack, Size: 3.5 Ounce (Pack of 18)
My son loves these so much! Amazing, quality ingredients! The variety packs are awesome because I buy in bulk and it makes it so much easier. Plus the variety itself is great. This is the only baby food pouch company that I trust and it’s the only one I buy from!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 23, 2025
★★★★★ 4
Toddler loves them
Flavor Name: World Explorers Variety Pack, Size: 3.5 Ounce (Pack of 6)
I like the variety of flavors that I don’t get with standard food pouches. They’re like the food we eat, but they’re safe for my daughter which gives me peace of mind. I would buy more, more often, if it weren’t for the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 15, 2024
★★★★★ 5
Child approved
Flavor Name: World Explorers Variety Pack, Size: 3.5 Ounce (Pack of 18)
Child loved all the flavors.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
★★★★★ 5
Taste amazing with good quality ingredients
Flavor Name: World Explorers Variety Pack, Size: 3.5 Ounce (Pack of 18)
Love that I can expose my 6 month old to so many flavors so early on. Way better than rice cereal! I have tasted all flavors myself to see what my baby is eating and everything tastes amazing!!! Just bland, but thats good for babies ♡ good for use crunchy and silky Mamas
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 4, 2025
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