pinoyplaya4life
Member
Re-reading through this thread it seems like you were the one who found the 8mm lens which you pointed out had BFL of 10.02mm. If you had some more knowledge and taken actual measurements of the camera this was going to be integrated into, you would have known that it’s going to be a ”cross your fingers” fit just looking at the specs …. if you understood what MBF meant and looked at that instead.There are a few 3 MP 8mm starlight lenses available now from Treeye and Yumiki that I don't recall seeing when I purchased the two different 6mm versions I own. There's a 4K 8mm available now too.(10.5 mm BFL)
Yumiki M12 CCTV 3MP 8mm lens F1.5 Focal Length 8mm Sensor 1/2.5"
Starlight Lens 8mm CCTV Lens HD 3.0Megapixel IP Cameras Lens F1.5 M12
4K Lens 12Megapixel Fixed M12 Lens 8mm Long Distance View 1/1.7 inch For IMX226 IMX178 4K IP CCTV camera or 4K Action Camera
If you were really that experience, there would have been no need to modify the lens mount (you would have recommend a lens that fits without modifications to the mount). It would have been a simple plug and play. But look how this 8mm mod played out.
The mount needed to be modified because focus couldn’t be achieved. This could have easily been known beforehand if you used my equation (with proper measurements accounting for initial thread engagement distance and sensor thickness)
But nope. The 8mm lens resulted in trial and error (by having to modify the mount).
Like I said, trial and error is your experience.
I think I’ve proven my point.
This specific 8mm lens will not work without modification to the M12 mount (for this specific camera: A139 interior camera). You need an MBF of 6mm or less to make it work without modification to the mount (all other specs and requirements still apply). But the BFL does NOT matter.
Lens referenced is
4K Lens 12Megapixel Fixed M12 Lens 8mm Long Distance View 1/1.7 inch For IMX226 IMX178 4K IP CCTV camera or 4K Action Camera
End of discussion.
The other lens such as this one:
Starlight Lens 8mm CCTV Lens HD 3.0Megapixel IP Cameras Lens F1.5 M12 For HD CCTV Surveillance Cameras
….will work without alterations to the lens mount for this A139 interior camera since MBF is less than 6mm. It would be a plug and play but still needs an cut-filter.
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