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Hiker
Posts: 12

Hero 9 Lens Specs ?

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hi everyone, i cant find the documentation about lens that hero 9 use. can you inform me about the lens.

 

  • F No.: ?
  • Focal Length:?
  • Optical Back Focal: ?
  • Flange Back Focal Length: ?
  • Image circle: ?
  • Lens Structure: ?
  • Mount: ? (M12*0.5)
  • FOV: (H*V*D) ?° * ?°* ?°
  • Resolution: more than 300 line pairs/mm

and one more question ; can we take off lens with heat gun and just turning left without dissamablly the camera. i mean is it stay there with only glue?

Nomad
Posts: 322

Re: Hero 9 Lens Specs ?

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Hiker
Posts: 12

Re: Hero 9 Lens Specs ?

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thank you for the post. but not enough information about lens structure.

Nomad
Posts: 322

Re: Hero 9 Lens Specs ?

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Screen Shot 2021-01-01 at 22.39.55.png
Hiker
Posts: 12

Re: Hero 9 Lens Specs ?

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thats good but i need to know the mounting thread measurment. can you find it?

Nomad
Posts: 322

Re: Hero 9 Lens Specs ?

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No, but I'd love to know it too! You know since the beginning GoPro's are created by Chinese industry no? 

Hiker
Posts: 12

Re: Hero 9 Lens Specs ?

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yes i know but i talk about lens thread with 2 people. they said that lenses that can mount on hero5-6-7 dont fit hero8-9. so i need to learn the thread and dimensions on hero9 for make custom lens mount on ccd sensor.

Nomad
Posts: 322

Re: Hero 9 Lens Specs ?

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That sounds promissing, no idea here sorry. Please share it if you do it!

Hiker
Posts: 12

Re: Hero 9 Lens Specs ?

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i think support team is very very busy and the updates have various problems. if it goes like this customers have to choose different brands in the feature. every new model comes with different software and hardware problems. i will just wait a satisfying answer from team about lens dimensions and techical information.

Hiker
Posts: 120

Re: Hero 9 Lens Specs ?

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Lens FOV may be found here

 

https://community.gopro.com/t5/en/HERO9-Black-Digital-Lenses-FOV-Information/ta-p/712624?gclid=Cj0KC...

 

For info, the Max Lens Mod gives a 123° Horizontal FOV with Hypersmooth/HL turned on.

 

I thought the standard lens was f/2.5 not 2.8.

Nomad
Posts: 322

Re: Hero 9 Lens Specs ?

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Interesting, thanks @stevep71516 , I think would be interesting to put a 3mm. but with f/ 1.4 or less, it would quadruple the amount of light to de sensor, being GoPro so bad in low light.

Hiker
Posts: 120

Re: Hero 9 Lens Specs ?

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Wide angle lenses are rarely, if ever, faster than f/2.8, the complexities of distortion and maintaining an image circle are huge at shorter focal lengths.

I have to say that I somewhat disagree about GoPro’s poor low-light performance, it’s image sensor is tiny and you get about as much as you’d expect from such small light-wells. The GoPro is an action camera, if you want excellent low light performance then get something with a large sensor and low megapixel count, and something with sensor cooling, something you’re likely to pay $0000 for.
Nomad
Posts: 322

Re: Hero 9 Lens Specs ?

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I have a Meike circular fisheye f/2 (double the light of 2.8) and it has no distortions, puting a big lens in front of a GoPro is OK if it gives me more light.

The fact that one is not a physicist in optics doesn't mean that as a GoPro user don't want to use the camera in all the situations without ripping the eyes off in low light.

I agree with you, but without closing to the fact that many things can be done to make a poor light recording a worthy pratice. 

 

Hiker
Posts: 12

Re: Hero 9 Lens Specs ?

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For me , i use hero3-hero4-hero5-hero6 with 4.3mm 90 degree and 5.4 70 degree lens. there is a huge quality difference with standart narrow and 4.3 90 degree lens results. after change the stock lens the aftermarket one can use all the ccd sensor not the small part of it. i use camera at spearfishing and i need close up view. and with these all models the recordings are perfect and clean with aftermarket lens. but at hero8-9 i cant find the thread measurments about lens holder. and i dont want to dissambley the all camera before i know the technical spec of stock lens.