B3 To B4 Lens Adapter
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MAS
5
Five Stars
They looked great. Car was stolen b4 they were installed
24/09/2022
Jessica
5
Family gift cancer patient
Amazing I had one b4 I gotten this one for my aunt she is going for treatment cancer figure she can use some relaxation
29/07/2022
Rosa Payton Rosa Payton
5
Worked perfectly
So far I honestly love everything about these.. You should have seen what I was working with b4.. lol But I just still haven't been able to pair the Bluetooth to my TV yet but will update ya'll when I accomplish this.. But so far really good!!
01/07/2022
Many cameras owner Many cameras owner
5
Easiest To Setup and Use. Great service.
This is the 7th Galayou or Wansview camera I have installed at 2 different homes. Of all the cameras I have used over the past 4 years, the Galayou are the easiest to setup and use. The app is great. The attached picture is the most recent one I installed inside a garage at my vacation home. I did have a problem with one camera and after some great email assistance from "Jane" at Wansview it was determined the camera was faulty and within 3 days I received a new replacement camera. I have B4, B3, W9, and Y4 style cameras. The B3 is great where you do not have a 120 volt service available. Batteries typically last 3-4 months and recharge is quick and easy.
12/05/2022
Eddie
5
Much needed QoL
There’s not much you can say about the adapter. I mean it works so what else would you expect? Well, it is well constructed and makes a nice click when installing your lens. I read some of the reviews on the cheaper alternatives and saw reviews mentioning the product feels cheap and how the lens are not firmly and securely attached. I rather not risk it but others have without issues. If you’re on a budget, do look at the cheaper alternative. If you can afford it then this is the one you want.
05/05/2022
hrs
5
Awesome cameras. I now have 10 wansview outdoor ca
Awesome cameras. We have 10 W9, 2 B3, and several indoor cameras. We use them to monitor our property and animals. Wife can monitor her horses day and night since the IR works great. Very pleased and satisfied with the cameras and customer service.
06/03/2022
kolijahc
5
Amazeballs
I bought these to go with the zoom B3 I got at the same time 

Zoom B3 Bass Guitar Effects and Amp Simulator









 to be able to play my bass silently. I was a little torn between these ones (tuned flat) and the ATH-WS77 (heavy bass) 

Audio-Technica ATH-WS77 Solid Bass Over-Ear Headphones









. I got these because I plan to do some recording with the B3, and wanted an accurate sound reproduction.I just received these today, and I've had them on for the last 5 hours with no discomfort. The sound is amazing. I've been playing around with the B3 and everything sounds great. I then tested them on my iPod and the sound great as well. I could wear these all day. I love the replaceable cords. They lock in place nicely. They won't make a fashion statement, but that is not why I bought these. This is my first pair of ATs, and I'm glad I gave them a shot.
11/11/2021
gary a.
4
Good earphones
Was working well b4 my wife put them in washing machine
18/06/2021
Related Faq
Q
I have a rf camera m2 and some nikon ai lens. if i use this adapter to connect both, can we see the focus frame “overlap” in the viewfinder?
A
Dear Customer, this adapter isn't suitable for your lens and camera. 
Q
Does the autofocus work with the Nikon lens on the Canon camera?
A
This adapter is non-electronic and so will not enable electronic communication between lens and camera, so no autofocus. 
Q
I have a nikon d3100 camera and need an adapter to fit a minolta 75-300 lens. does this adapter do that are can you direct me to one that would?
A
K&F have a list of which adapter will work for each lens to camera combination they support 
Q
Too loose/there is gap between lens and adapter ring
A
  1. If there is ever any more than a slight amount of rotational play, you may want to try tightening the lens mount adapter so it will hold the lens tighter to the mount. There are 3 flanges in the middle of the adapter (what the lens locks onto) that are split open slightly, this gap is what gives the tension that holds the lens tight to the body. Over time and with use these gaps decrease in size, no longer pulling the lens tight to the adapter, which allows the lens to move inside the mount more than it should.
  2. To tighten the fit, get a slim metal object (a #1.5 or #2.0 small flat eyeglass screwdriver is ideal) and insert it into the slit to open it up just a little bit (see images below, make sure to do it to all 3 evenly). The more you open the gap, the tighter the lens will be to the adapter; too much and the lens will have a hard time mounting so make sure to do it just a little bit at a time to all 3 flanges evenly, it doesn’t take much at all to get a tight fit.Note: please do not use too much strength, or the shrapnel will be damaged.
 
Q
Why camera indicated “lens is not properly installed”?
A

If your camera indicated "lens is not properly installed", please modify the camera menu settings. Usually called the "release the shutter the lens is not installed", you can modify the settings to allow. Specifically refer to the camera manual.Following are some examples:

  1. MFT(M4/3 mount camera)'Lens Not Found' - Warning Message Appears
    For Panasonic Lumix:
    The camera needs to be set to function without a MFT-Mount lens attached. You can do this by changing the following camera setting:
    'Menu' -> 'Custom Menu 5' -> 'Shoot W/O Lens' -> 'On'
    (Exact naming and location of this option may change depending on camera model)
  2. Fujifilm X mount camera, The camera needs to be set to function without a GFX-Mount lens attached. You can do this by changing the following camera setting:
    'MENU' -> 'SETUP' -> 'BUTTON/DIAL SETTING' -> 'SHOOT WITHOUT LENS' -> 'ON' (Exact naming and location of this option may change depending on camera model) Choose ON to enable the shutter release when no lens is attached.
  3. Sony E mount camera, 'No Lens Attached' - Warning Message Appears
    The camera needs to be set to function without a E-Mount lens attached. You can do this by changing the following camera setting:'Menu' -> 'Setup' -> 'Release w/o Lens' -> 'Enable'
    (Exact naming and location of this option may change depending on camera model)
  4. Nikon 1-Series mirrorless camera , 'Check lens. Pictures can only be taken when a lens is attached' - Warning Message Appears
    With a Nikon 1-Series camera (such as the J2), you will need to make sure the camera is in 'Manual' exposure or shooting mode and the focus selection is also set to manual. When in any other mode the camera tries to take control of the lens which is not possible as the adapter does not have any contact with the camera circuitry, so you get the lens check warning as the camera does not think there is a lens attached.
  5. 'EOS M mirrorless camera ,'No Lens Attached' - Warning Message Appears
    The camera needs to be set to function without a EF-M Mount lens attached. You can do this by changing the following camera setting:
    'Menu' -> 'Custom Menu' -> 'Custom Function 7' -> Select 'Release shutter w/o lens'
    (Exact naming and location of this option may change depending on camera model)
  6. Konica Minolta:
    For Konica Minolta and "No Lens Attached"
    Custom Menu 3
    First item "Shutter Lock"
    Set it to "Off: no lens"
    (Depending on camera model "Shutter Lock" May be in different menu location)
  7. 'Samsung NX 'No lens.' - Warning Message Appears
    The adapter is designed to trigger a sensor inside the camera body itself so no setting needs to be changed. If the error message is coming up with one of our adapters attached, then it is possible that the adapter is not hitting that sensor the way that it should. Usually rotating the adapter slightly in the mount, or un-mounting and remounting the adapter clears the problem with no further action needed. If that doesn't solve the problem, then the best course of action would be to swap out the adapter you have with a replacement.
 
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