You need to ad an IR/UV cut filter either in front of the lens or at the rear. You may have seen a pinkish looking filter attached to the rear of the original lens. Then the colour balance will be spot on. Focusing with a longer FL lens is also more critical and the have a much more limited depth of field, again making focusing requirements more accurately-hard to do unless the camera is mounted on a tripod and focused on a distant object at infinity. Check to see if the front of the lens has a screw thread then check on Google for one of the correct diameter. I have a great many varies video and still camera modules I use in astronomy, and this is always an option because some users want the IR wavelength, especially with B&W cameras. There are a vast range of such lenses as these at a wide range of quality and price points.
I'm interested in putting a 12m varifocal lens on a xiaomi mijia 4k action cam to shoot a short film. Is it possible to remove the IR receptive filter or are ir block filters available for cctv varifocal lenses?
Hi. Very good demo, thank you. I was interested in seeing how this tele zoom can operate for magnification, on a desk - for soldering purposes - for me to use with a display.
It needs an IR filter I think. I have one of these lens's and also need a cure for that problem. Answers please somebody. The original lens has an IR filter.
What this needs is some kind of focus peaking mode on the camera to lock focus... Oh, and get a 5 cent IR cut filter and glue to the rear of the lens... I've done this, it works well, but focus is always a problem, this lens is wide open aperture with no adjustment, minimum depth of field, nice effects possible, but between the focus going off every little change to zooming (varifocal), and the tiniest movement of the lens throwing focus off, it is very difficult, especially on the fly, to establish good focus on a subject... When you do get the focus bang on, this lens is sharp! Oh, and - this lens can focus real close up for nice, sharp, shallow depth of field work, I've video'd a bumble bee bumbling flower to flower with this lens... A warning... the copy of this lens I purchased, after mounting the IR cut filter, could extend backward dangerously close to the sensor when you zoom (out, I think) as you focus, the lens at the back extends past the rear threads of the lens, possibly into the sensor if you are not carefull... Oh, and watch the dirt as you mount lenses, the sensor needs periodic cleaning...
Zoom lense is useless in action cams coz they dont have continuous auto focus.......off course still photography can be done....but action cams are not made for it.....
You need to ad an IR/UV cut filter either in front of the lens or at the rear. You may have seen a pinkish looking filter attached to the rear of the original lens. Then the colour balance will be spot on. Focusing with a longer FL lens is also more critical and the have a much more limited depth of field, again making focusing requirements more accurately-hard to do unless the camera is mounted on a tripod and focused on a distant object at infinity. Check to see if the front of the lens has a screw thread then check on Google for one of the correct diameter. I have a great many varies video and still camera modules I use in astronomy, and this is always an option because some users want the IR wavelength, especially with B&W cameras. There are a vast range of such lenses as these at a wide range of quality and price points.
I'm interested in putting a 12m varifocal lens on a xiaomi mijia 4k action cam to shoot a short film. Is it possible to remove the IR receptive filter or are ir block filters available for cctv varifocal lenses?
and or which lens
should I be buying?
Hi. Very good demo, thank you. I was interested in seeing how this tele zoom can operate for magnification, on a desk - for soldering purposes - for me to use with a display.
That looked a little too easy to disassemble. There isn't any glue holding the original ekens lens in place?
I've been looking for the eken zoom lens. I find tutorials for how to put it on, but not where I can buy it. Please advise
Where did you buy the lens?
I also need a
Poerfavor tell me where did you buy
Keep in mind this lens was made for security cameras and you won't get a sharp HD, 4K resolution image from the camera.
it does look surprisingly sharp even without the IR filter. 1920x1080 in under 3MP, so the 3MP lenses should give sharp HD. But not 4K.
Why is the color very bad on the zoom lens?
It needs an IR filter I think. I have one of these lens's and also need a cure for that problem. Answers please somebody. The original lens has an IR filter.
Probably the IR filter in the lens is not very good. Check it before buying.
You can make some colour correction afterwards in video editing software (autolevel is the easiest) or set it manually.
it generally has no IR filter due to night vision destiny
CS/C-mount lenses have no IR cut filters on them. You will need to put an IR-cut filter over the sensor or the back of the lens.
With that lens to see in the dark?
You should put IR blocker on the replacement
Does this lens fit to all action cams? what is this action camera that fits so well?
is there a c-mount adapter for this camera out there?
Any idea how to remove the Infrared from the lens
does the camera output live hdmi for monitoring?
Where to get this and how much does it cost?
in where i will get that zooming lense
How remove fish eye of 4k action cam without plugin ,through of lens. Sorry my english!
If there is no distortion correction mode in ur cam, it is not possible to correct fish eye
dimana saya bisa mendapatkan barang ini?
I have two questions 1. What website did you get that lens from ? And 2. How did you get the front to come off so easy ?
Mee too same doubt
And where to buy?
You have review picture or video from lens?
hello once you install the zoom deceo then if I can put the original lens greetings?
WHAT CAM IS IT? LINK IN DESCRPTIONS??
1:10 but it looks all pink? It looks awful so whats the point?
Hello,
Is the lens compatible with the SJ4000?
And is it possible to correct the bad color?
Eckardt Mustermann it is m12 standard, i replaced my stock screw lens with go pro 170
Thanks exactly what i wanted to know!!!!!!
So different colour when you replace lens??
anang berkah it's just because the lense replacement doesn't have an IR Filter
can you do that to a eken h8r?
you forgot to install the polarizing filter
I want this lens plz send me buy link plz!!!
Link?
where did you buy the lens from, could you please give me the price range of this lens so that i can look at the right ones and save time.
ru.aliexpress.com/af/m12-lens.html?ltype=wholesale&d=y&origin=n&isViewCP=y&catId=0&initiative_id=SB_20160819041034&SearchText=m12+lens&blanktest=0
I got mine here ..... www.banggood.com/700TVL-2_8-12mm-13-Sony-CCD-Manual-Zoom-Camera-Lens-FPV-p-962646.html
@@stewjade Thanks for a fine information.
@@PrinzEugen7ss Thanks man but it is a terrible lens.
What is the resolution (Mpixels) of the lens? 3mp?
Spec 12 mp..but the real is only 4mp due to chipset n sensor
Looks like the white balance gets screwed up when in focus. Can the white balance of these cheap action cameras be turned off?
No, it can not be
Can take photo portrait?
Which Eken is this? H9? (it doesn't say Eken on the front)
It is probably fake.
The Eken don't have "Eken" wrote on the front
Tem augun brasileiro ai?
Só tuga
Beliny di mn bos
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What this needs is some kind of focus peaking mode on the camera to lock focus... Oh, and get a 5 cent IR cut filter and glue to the rear of the lens... I've done this, it works well, but focus is always a problem, this lens is wide open aperture with no adjustment, minimum depth of field, nice effects possible, but between the focus going off every little change to zooming (varifocal), and the tiniest movement of the lens throwing focus off, it is very difficult, especially on the fly, to establish good focus on a subject... When you do get the focus bang on, this lens is sharp! Oh, and - this lens can focus real close up for nice, sharp, shallow depth of field work, I've video'd a bumble bee bumbling flower to flower with this lens...
A warning... the copy of this lens I purchased, after mounting the IR cut filter, could extend backward dangerously close to the sensor when you zoom (out, I think) as you focus, the lens at the back extends past the rear threads of the lens, possibly into the sensor if you are not carefull... Oh, and watch the dirt as you mount lenses, the sensor needs periodic cleaning...
Bangladesh price?
Good bye water proof case 😂😂😂
music please
Original lens much much better color sharpness and white balance. The zoom lens plenty of magenta color cast and sharp as the original lens.
It' because there is no IR filter
Kene beli 1 ni..singgah ye 👍
Beli dmna ya
cool
ZOOM GitUP 2P Не плохо. Я тоже переделывал объектив, делал фокус на близкие расстояния. Можете зайти на канал и посмотреть
Too much IR interference 😲
Bagus
No IR/UV Filter. Color is terrible.
i would buy this but the color is really shit. good review tho
the real pepe the lens he bought is for cctv application, no ir or uv blocking.
Zoom lense is useless in action cams coz they dont have continuous auto focus.......off course still photography can be done....but action cams are not made for it.....
Like
i dont wont wi fi.
fucking stuff
чушь полнейшая.Пока настроишь резкость и зум,уже все желание пропадет
Color is very bad.
Looks like a waste
TEST EKEN
th-cam.com/video/CXmPS_hIwa8/w-d-xo.html
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What about bad colours....? Is it possible to correct it in camera setup?
halo , dimana saya bisa mendapatkan barang ini?