Mobius 5MP Varifocal Zoom 6-22mm ƒ/1.6

Lola

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You are unlikely to find any variable focal length CCTV lens with that level of barrel distortion correction. For one thing CCTV cameras have no need for that level of correction and for another, as a varifocal, the level of optical distortion will change as you go from the widest setting to the telephoto setting, decreasing at the longer lens extensions. As you can see in all of the (varifocal) telephoto images in this thread there is virtually no barrel distortion to be concerned with anyway and if you think about it, there is no compelling reason to use these varifocal lenses on a dash cam for anything other than their telephoto capabilities. Anyone seeking a distortion free wide angle lens on a dash cam would be better served by installing a well corrected fixed focal length lens.
Those pictures you posted made with the 6-22 Varifocal were simply amazing to me with better resolution and depth of field then I have seen on this forum or any where else for M12 type lenses.:cool: I completely gave up on finding a M12 12mm (fixed FL) lenses, none of them come close to the 6-22 Varifocal. I will be ordering another one as a backup in the near future. As for wide angle smaller FL companion lens, these have all ready been discussed in depth a few months ago and will take care of things in around the 4mm FL level. Now all I have to do is buy another camera to replace the stolen one. That bothers me because apparently the parts used in them (Mobius 1) are not at as high a level as the older cameras had quality wise!

I was hoping the new Mobius Maxi would fill the new camera gap but as you pointed out the M1 still has a greater level of massaging the best picture to be had. Why their people decided to go with another camera after the M2 fiasco and cutting short the massaging capabilities of the mother board is totally beyond apprehension. As it is the Maxi falls short of what it could have been because of the executive decisions at Mobius. The above are just my opinions:rolleyes:.
 

TonyM

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Wonder if there are any m12 zoom lens between 4-24mm that has less than 1% optical distortion.
This CS mount 4-10mm zero distortion lens from Peau Productions could possibly give approx 6-16mm on a 1/3" sensor camera with an appropriate stepping ring.
It's rather large to fit onto a Mobius, and it's not cheap!
1531220490436.png
4-10mm f/1.4 GP41014CS (No Distortion)
 
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TonyM

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OK, so Treeye sent me several 9.5mm IR-cut filters to play with and I installed one on my 6-22mm lens with great success. Treeye did a great job of getting the filters to me extremely fast as they arrived two days ago and they came extremely well packaged in a small cardboard carton when they just as easily could have been sent in an envelope.
I just received my batch of 9.5mm IR cut filters from Treeye. Very quick delivery in less than a week from placing the order, and once again safely packaged in a cardboard box.

Is there any difference in coatings between the front and back sides that I should be aware of to get the correct orientation?
 
OP
OP
Dashmellow

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I just received my batch of 9.5mm IR cut filters from Treeye. Very quick delivery in less than a week from placing the order, and once again safely packaged in a cardboard box.

Is there any difference in coatings between the front and back sides that I should be aware of to get the correct orientation?
The rule of thumb is to put the shiniest side towards the objective (pointing towards the direction the light is coming from). If it's hard to determine the shiniest side, you may find that when laying the filter horizontal then flipping it over, you'll probably be able to see a double reflection on one side (second surface reflection) and a single (first surface) reflection on the other side. It's the single reflection side that should face the front end of the lens. For dash cams, if you just can't figure out which side faces front don't worry about it as it's not likely to make much of a difference any of us could detect and it will still block near IR waves lengths. If you were installing a dichroic filter on a high end piece of laboratory equipment where precision results are mission critical, you would absolutely want to make sure everything is perfect.
 
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Lola

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The rule of thumb is to put the shiniest side towards the objective (pointing towards the direction the light is coming from). If it's hard to determine the shiniest side, you may find that when laying the filter horizontal then flipping it over, you'll probably be able to see a double reflection on one side (second surface reflection) and a single (first surface) reflection on the other side. It's the single reflection side that should face the front end of the lens. For dash cams, if you just can't figure out which side faces front don't worry about it as it's not likely to make much of a difference any of us could detect and it will still block near IR waves lengths. If you were installing a dichroic filter on a high end piece of laboratory equipment where precision results are mission critical, you would absolutely want to make sure everything is perfect.

WHATo_O, you trying to say a Mobius1 isn't a precision piece of electronic equipment, BLASPHEMY, you know better:D
 

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