How camera lenses are made

How camera lenses are made

You are thinking about purchasing a wireless hidden camera but, like many people, are afraid of electronic products. You keep reading about words like “lux” and “camera resolution” and “line of sight” — do I really have to know what these mean? And, isn’t the wireless hidden camera hard to install?

The answer is NO and I’m going to tell you how easy it is to install and use your wireless hidden camera. I will also explain some of the “difficult” terms in plain, understandable English so you won’t be intimidated any more.

The best thing about a wireless hidden camera is just that — it’s WIRELESS! You won’t have to run any wires through your walls or under your rug.

These wireless cameras are called “hidden” because they are built into an existing everyday object that you see in your home or office. Most of these objects are functioning electrical appliances, e.g. clock radios, cordless phones, and even computer speakers.

Each object contains a wireless camera. The camera will function as long as the object is plugged into the wall outlet. For example, even when you turn your radio off, the camera is still working! These objects look natural when plugged into the wall, so your camera remains hidden and unsuspected.

Don’t forget — the object in which your camera is hidden is usually portable, e.g. clock radio. So even if you disconnect the plug from the wall — perhaps to move the object — you can still use your wireless camera with batteries. The batteries work for about 4-8 hours, so it’s best that you have another set handy or use a battery charger for a fresh supply.

You want to purchase a wireless surveillance camera system that is “Plug and Play.” This means just what it says — plug it in and begin using it! Your wireless hidden camera comes with 2 main components: 1) a camera and a transmitter connected inside an everyday object; and 2) a receiver which is attached to your VCR or TV. That’s all there is to it — you’re now ready to record!

Record what? There are unlimited uses for your wireless hidden camera.

How about as a hidden nanny camera — you can watch your children while they are being cared for by their nanny or baby sitter. What about your mother or father who is getting up in years and needs special care. Wouldn’t it be great to know who’s on your property all the time or even at the door? And how about your children — you can keep an eye on your tots with your hidden nanny camera to make sure they don’t leave the house or property. And, now with your small security camera, you will know the real time your teens return home at night!

By using wireless hidden cameras in the workplace, you will always be aware of what’s going on in your store, office and warehouse. Just set up a hidden camera to view your cash register, entrance and exit doors, loading dock, or just about anywhere.

All this and much more can be viewed from your VCR tape or live on your TV. And, with special software, you can watch what’s going on in your home or business on your computer screen, even when you’re away.

Should you choose a Black and White (B/W) or Color Camera? That is a personal choice that you should make. A Black and White camera does better as a low light wireless camera than a color camera because it has a lower lux. Color Cameras, however, would be more helpful to the police in identifying the burglar, shoplifter, assailant, etc. by giving a better description — for example, “the man with red hair in the green and yellow shirt.”

Finally, I promised to explain some technical camera terms. Here are some of the general questions you might ask about your wireless hidden camera:

• What is a Wireless Camera? A wireless camera consists of a camera with a transmitter attached to it and a receiver which connects to a VCR or a TV.

• What is “Plug and Play”? Plug and Play is the easy way to install your wireless surveillance camera system. Just connect the power supply (either AC for wall power or the battery pack) to your camera. Place the object containing the camera to show what you want to review. Connect the receiver to your TV or VCR using the red and yellow RCA cable from the receiver. You are now set up.

• What is a Transmitter? A transmitter is a device that converts video signals into radio frequency signals and transmits them as radio waves.

• What is a Receiver? A receiver is an electronic device that receives radio signals from a transmitter and decodes the signal for use as pictures on your VCR or TV.

• What is “Lux”? Lux is a method of measuring a camera’s sensitivity to light, i.e. it is the amount of light the camera needs to provide an image. The lower the number, the less light the camera needs to reproduce a clear image. A Black and White camera usually has a lower lux than a color camera. It will hold an image longer than a color camera. For example, a B/W camera with a .05 lux will be better in low light than a color camera with a .5 lux.

• What is the meaning of “camera resolution” for security cameras? Camera resolution is a measure of the clearness of a security camera. It’s determined by the number of horizontal video lines that the camera must have to reproduce the correct image. The higher the resolution number, the sharper the image.

• What is a Monitor? A monitor is what you use to view your camera image. The monitor could be a TV, CCTV (closed circuit TV) or even your computer screen.

• What is “Line of Sight”? Line of Sight means that the video signal travels from the transmitter in your camera to a dedicated receiver (e.g. VCR or TV) placed a certain distance away with no obstructions or interference between the two. The signal can go through walls and floors. Low Power Cameras usually have a line of sight of 700 feet. However, you can upgrade to a High Power Camera which has a line of sight of 3,500 feet.

So there you have it — you don’t have to be a camera buff to install or operate your wireless hidden camera. Just plug and play!

Don’t Become the Next Crime Statistic! A wireless hidden camera will show you
what’s REALLY happening in your home or business.

For more information on hidden cameras, please click on this link:
http://www.feelsafeandsecure.com/wireless_hidden_cameas.html

Feel Safe and Secure is a seller of home security products, self defense products and wireless hidden cameras. To view these amazing products, please visit our website: http://www.feelsafeandsecure.com  and Don’t Be the Next Victim!

Watch the video related to camera

Hidden camera / practical joke show

Help answer the question about camera

What digital camera would you suggest for recording a low budget film?
It's an extremely low budget movie.

I would like to use a digital camera to record it because digital cameras are obviously cheaper and easier to use.

Should I record a movie with a digital camera or would it look to cheap? If I can, what digital camera would you suggest? If you say no to the digital camera idea, what other camera should I use (that's low-priced preferrably)?

About Author

Larry Zolna -
About the Author:

Larry Zolna is an author of numerous articles regarding Home Security Products, Self Defense Products and Wireless Hidden Cameras. All of these products can save you from the bad guy so you won’t become another crime statistic. To see more about these crime-deterrent products, please visit http://www.feelsafeandsecure.com

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18 Responses to “How camera lenses are made

  • 1
    Taylor
    June 25th, 2010 14:15

    That lens adapter adds screw threads to your lens so that you can add screw-on lenses to your camera. These lenses will be 2x, 0.5x, maybe fisheye, etc. They'll give you more zoom, or wider angles or special effects like fisheye. What they won't give you is professional images. These screw-on lenses are generally poor quality and only serve to degrade your image.

    If you want true interchangeable lenses, you'll need an SLR. The other benefit of an SLR is that the sensor is MUCH larger so images generally come out noise-free. Most professional photos are taken with an SLR.

  • 2
    chinnmusic
    June 25th, 2010 14:42

    ahhhhhhhhhhhh……….stop it please. This is lame

  • 3
    jimdemer
    June 25th, 2010 14:43

    how…. the camera is invissible….. LoooooooooL

  • 4
    Anonymous
    June 25th, 2010 15:02

    Simple way to tell if a lens will work with a particular body:

    Take your lens off & look at the mount on the body. The Rebel will have a red dot (around 12 O'clock) and a white square (around 2 O'clock). Now look at your lens; the 18-55 (all EF-S lenses) has a white square. Old AF film lenses (EF) have a red dot on the base.

    Your camera can take any AF lens that have the same mark on the body. So all AF Canon lenses fit the Rebel, but only red dot lenses fit film & full-size sensor cameras like the 5D.

    Update: Old lenses (as long as they're EF/EF-S) aren't necessarily any worse than their newer replacements. The only real problem might be that there are no parts to repair some of them if they break. Many newer versions now come with Image Stabilization and that can improve your hand-held pictures. Of course L-lenses are fantastic, but they're bigger & very expensive. EF-S lenses only exist in the wide-angle zooms (usually starting at 18 or wider) and there really aren't any old lenses to compare them to.

  • 5
    han80cock
    June 25th, 2010 16:58

    I like it and I will try it ” thank U “

  • 6
    krabat797
    June 25th, 2010 18:09

    I’d like to see some test vids with that one in a red light district or rocker bar or something like that

  • 7
    bewhour
    June 26th, 2010 15:04

    Hi. Sorry you are so confused. It all boils down to what you are going to do with the camera. The D90 and the D700 are both amazing cameras. However, they are not in the same class.

    From my experience, the pro (FX) lenses are going to hold their value much better. They are generally faster too. You already have the FX lenses and you got them for a steal. Why would you be thinking of going backward now? Backward in a sense that you have pro lenses and you are considering selling them to buy a DX camera and some of those cheap plastic DX lenses?

    Be happy. You got a great deal on the lenses. Obviously you don't mind holding out for a good deal. Find a D700 for a fair price and be done. You have everything else you need. :)

    Good luck. If you need more help, please email me.

  • 8
    Shattered
    June 26th, 2010 23:23

    oh your life is not ruined and your christmas is not ruined either.

    Stuff happens, things break. No one is going to stay mad forever because something got broken. Just try to be more careful in the future, that's all.

  • 9
    toettli
    June 27th, 2010 01:07

    Wow, can’t spot that sneaky little camera thats sticking out of that huge hole in your pocket. Why don’t you just go buy a real spy camera?

  • 10
    payment892
    June 27th, 2010 01:53

    YESSSIR go to mp3gather..com to download utube music to mp3s.

  • 11
    JRussell
    June 28th, 2010 05:10

    Yikes, you DO have a lot of questions – it would take a few pages to answer them all.
    If you like, you can send me an email and then try to hook up via Yahoo messenger. If you have a headset or mic/speakers, it would be much easier to try and do all this via audio.

    Apart from that, basically every one of your questions has already been answered countless times here on YA as well as many other venues on the internet.
    With some serious research, you could quite easily find all the answers yourself.

    To get you started on your journey:

    Go to your local library – mine had tons and tons of photography books.

    The major camera manufacturers (like Canon, Nikon, Olympus etc) all have very useful sections on their website for learning about photography.

    http://www.usa.canon.com/dlc/controller?act=HomePageAct

    http://www1.nikonusa.com/slrlearningcenter/index.php

    http://www.olympusamerica.com/cpg_section/oima_learn_center.asp

    The internet is full of tutorials, just start googling.

    I'm glad you are willing to put in the effort – you will thank yourself for it.

  • 12
    MSJDesign
    June 28th, 2010 12:12

    “put your screw driver in” thats what she said.

  • 13
    live forever
    June 28th, 2010 12:41

    Anything off brand is less valuable than anything name brand. Also, be sure it fits your camera – you can fit a lens with a Canon mount on a Nikon, or any other brand on any other brand.

    Image quality can also be a major issue with 3rd party brands – so buyer beware. If you're going to go 3rd party go with Sigma, Tamron, Tokina, etc.

  • 14
    conacre
    June 28th, 2010 14:47

    See Samsung:

    http://www.samsungcamera.com/

    According to Wikipedia:

    "Many of Kodak's earlier digital cameras were designed and built by Chinon Industries Chinon, a Japanese camera manufacturer. In 2004, Kodak Japan acquired Chinon and many of their engineers and designers joined Kodak Japan. In July, 2006, Kodak announced that Flextronics would manufacture and help design their digital cameras."

    en.wikipedia.org/wiki/Kodak#Cameras
    See also:
    http://www.kodak.com

    As for the lenses, Schneider Kreuznach (according to this reference) is currently the original equipment manufacturer "lens maker for Kodak and Samsung digital cameras"

    Reference: en.wikipedia.org/wiki/Schneider_Kreuznach

    Schneider Kreuznach does have an U.S. subsidiary "Schneider Optics".
    See also: http://www.schneideroptics.com

    ****

    That's all a bit piecemeal but perhaps provides you with enough clues to do a little research on your own.

  • 15
    manhtien1997
    June 28th, 2010 16:32

    shit,men…if i have a USB wireless,it will better than your!!

  • 16
    AnsleyH.
    June 28th, 2010 17:12

    The Olympus Pen is an excellent camera. For years now Olympus has made cameras smaller than most other manufacturers. It will work for all ofthe purposes that you want it to.

    When you purchase the camera, do it at a camera store and not a big box store. There you get a professional opinon rather than to talk to an idiot that just got his job last week.

    The 14-42 is good for landscapes, giving you the equivalent of a 28 mmm (on a 35mm film format) lens up to a 84mm which is good enough for portraits and closer up. That lens should serve you for about 85% of the situations that you will encounter.

    They have a longer zoom that will take care of the other 15% or so. For portraits, get a 50mm with the widest aperture. If the 35mm is a macro, that will do, but a standard 35mm will not give you macro unless it tells you it will.

    I have shot Olympus cameras since 1970 and really like them. I still have four old film cameras that I love and take most of my 35mm film shots with.

    What you will really like about the Pen is the size – it will not weigh you down.

    Olympus is a specialist in small photo-optical equipment. If you had to go to the hospital for a look down your esophagus, that will probably be done with an Olympus camera and the pictures it takes will be suitable for framing – if you want pictures of your esophagus.

    A lot of people don't like Olympus because the format is not a 3:2, but a 4:3. Really, that is a bit stupid because most professional photographers also shoot things in medium format, which is not a 3:2. Lumix and Leica use the same format, so it is not totally alien.

    With an adapter, you can use older Olympus lenses if you want. That might be seen as a convenience factor, but the Olympus lenses made for your camera are made especially for digital photography. A film surface is totally flat in the camera, but the surface of the sensor in your Olympus, and other digitals, is not totally flat, they have little recesses in them, pockets so to speak. Olympus is the only manufacturer that makes all of their lenses from Glass with no plastic elements.

    Olympus was making cameras before either Canon or Nikon existed, so they know photography.

  • 17
    Kellan
    June 28th, 2010 18:10

    what you need:
    a box with a lid of some kind: i recommend a tin cookie box or something similar
    something to poke a hole in the box: knife, drill, screw driver, ect- be careful!
    small square of foil
    black spray paint
    tape
    light sensitive paper: just normal photo paper used for making prints

    how to do it:
    the first thing you need to do is to make a light-tight area inside the box (i HIGHLY recommend that you do not use a round box so that when you set your camera down it does not roll!) to make the box a light-tight camera you will need to spray paint the inside black- make sure to paint the inside of the box completely especially if it's tin since tin is reflective.

    next make a hole in the box opposit the lid. it will be so much easier to drill the hold here and not into the LID.! it does not matter how big you make the hole!

    next take enough foil to cover the hole and use a small needle head to gently poke a hole into the foil- this is best achieved by placing the foil on a hard serface and applying little pressure to the needle as you twist it to make a VERY small hole- the smaller the better! you may need to do this a few times until you get the hole right

    then use tape to attatch the foil over the hole. make sure that the hole is completely covered! and do not tape over the hole!!!

    (optional but advised)
    if you do not want to walk around with your hand over the hole you will need to make a lense cover. you can do this by simply taking some painters tape, duct tape, or that black tape to cover wires and take a long peice and just fold half of it so half is not sticky. tape it with the sticky part attatched to the tin box and have the folded over part on the foil so when you remove it the foil will not rip. you may need to play around with it and attatch another piece of tape to hold the nonstick part down…………just do what you think is easiest so the hole is covered and easily uncovered

    after you paint the inside and make the hole your camera is finished- all you have to do now is to remove the lid, place a piece of photo paper into the lid while in a dark room- fold tape over and put it gently on the back of the paper so it sticks to the lid and doesnt move while you are taking your picture. put the lid back on TIGHT so that no light gets in and place your camera infront of your subject and uncover the hole.

    you will need to play around with the amount of time to uncover the hole

    dont get discouraged, you'll need to be patient with it- the first few photos will most likely be over-exposed, but you'll get the hang of it!

    good luck!

  • 18
    vincevega0
    June 28th, 2010 20:42

    “How to ruin a good sweater.”

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