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How camera lenses are made

From the Discovery Channel
Категория: Howto & Style
Время: 00:06:59.250
Теги: Lens Canon Nikon camera
 

Physics: optics of lenses and mirrors (1)

Physics: Introduction to geometric optics for lenses and mirrors. Concave, convex, converging, diverging; real, virtual; upright, inverted, magnified, shrunk. Sign conventions for focal length, image distance, object distance, magnification. The lens/mirror equation; the magnification equation. Introduction to ray tracing. This is a recording of a tutoring session, posted with the student's permission. These videos are offered on a "pay-what-you-like" basis. You can pay for the use of the videos at my website: www.freelance-teacher.com For printable documents containing the "handout" and problems discussed in this video series, go to my website. For a list of all the available video series, arranged in suggested viewing order, go to my website. For a playlist containing all the videos in this series, click here: www.youtube.com (1) The lens/mirror equation. Focal length distance, object distance. Convex, concave, diverging, converging (2) Image distance. Real, virtual (3) Continued. Magnified, shrunk (4) Continued. Upright, inverted (5) Continued. Magnification equation (6) Continued. The lens/mirror chart (7) A problem (8) Continued. Ray tracing (9) Continued (10) Another problem (11) Continued tags: educational college student MCAT exam instructional video education
Категория: Education
Время: 00:08:06
Теги: physics geometric optics lenses mirrors magnification real virtual image focal point concave convex educational college student MCAT exam instructional video education
 

How To Apply Contact Lenses

The lenses I use are coloured contacts, NOT for my vision. They're meant for cosplaying, dressing up or just a one-off. They are not meant to be worn constantly. You should ALWAYS check with an optician before purchasing lenses just to make sure they're ok. If you have a history of eye problems, if your eyes are different shapes, of if the lenses just don't feel right DO NOT USE THEM. Always keep your tools clean. I always wash the tweezers after using them and make sure that the lens cases are super clean. I learned at lot of new tips and tricks for this video from Earaness, check him out his makeup is awesome!: www.youtube.com I've said this in the video but I just want to say it again, ALWAYS check with an optician before doing anything with your eyes. What I used: -Contact lenses (single colour grey): www.funkylenses.co.uk -Lens Tweezers can be found on e-Bay :) -(And for those of you asking the earrings here is the seller I bought them from): www.ebay.co.uk Just as a precaution I'm going to paste the FAQ's from the contact lens company I buy my lenses from: Soak your Funky Eyes in solution for at least 2 hours before wearing them. PLEASE DO NOT OVERWEAR. On the first day, wear for no more than 4 hours, you may then increase this by 2 hours each day but never wear them overnight. DO NOT share this product DO NOT let this product dry out. DO NOT wear or use our products if damaged. DO dispose of this product 30 days after opening. FREQUENTLY ASKED QUESTIONS. Q : How do ...
Категория: Howto & Style
Время: 00:03:03
Теги: How To Apply Contact Lenses Circle
 

How to Put in and Remove Contact Lenses

Expand the description and view the text of the steps for this how-to video. Check out Howcast for other do-it-yourself videos from dpakman91 and more videos in the Eye Care category. You can contribute too! Create your own DIY guide at www.howcast.com or produce your own Howcast spots with the Howcast Filmmakers Program at www.howcast.com Nothing is worse than having a contact slide under your eyelid. OK, there are worse things. But this is one you easily can avoid. To complete this How-To you will need: Good lighting A sink Unscented soap A mirror Your contact lenses And contact lens wetting solution Good lighting A sink Unscented soap A mirror Your contact lenses And contact lens wetting solution Step 1: Find well-lit mirror Find a well-lit room with a sink and mirror. Tip: Close the drain so that if you drop your contact lens, it won't be washed away. Step 2: Wash your hands Wash your hands with unscented soap. Oils and dirt can not only damage your lenses, but could cause eye infections. Tip: Always put your contact lens in before applying makeup. Step 3: Wet the lens Using your index finger and thumb, pick up one of the lenses and moisturize it with some contact lens wetting solution. Step 4: Position lens Hold the lens on the tip of your index finger the way it will go into your eye —bowl shaped, with the "cup" facing up. Tip: Make sure the lens isn't inside out: If it's a perfect "U" it's fine; if the edges flare out, it needs to be flipped. Step 5: Hold eyelid ...
Категория: Howto & Style
Время: 00:01:48.750
Теги: healthbeauty diy instructional tutorial do it yourself tips essential skills learn to health care eye
 

Halloween Contact Lenses | Coastal.com

Check out these creepy, scary, freaky and cool contact lenses - perfect for Halloween! Halloween Contacts: www.coastalcontacts.com Some choices: Twilight (Gold Vampire), Banshee, Cat Eyes, Vampire Red, Black Out and more. AboutCoastal Contacts: Coastal Contacts is the largest online retailer of contact lenses and eyeglasses, providing high quality brand name contacts and designer eyeglasses, all delivered to your door for a fraction of the price.
Категория: Entertainment
Время: 00:00:50.250
Теги: halloween contacts vampire contact lenses halloween contact lens twilight contact lenses red contact lenses gold contact lenses golden contact lenses gold contacts scary eyes freaky eyes crazy eyes crazy freaky scary cool creepy
 

Convex Lenses

Convex Lenses
Категория: Education
Время: 00:07:02.250
Теги: Convex Lenses optics
 

CONTACT LENSES

long awaited video I have more pictures and details where to purchase on my blog iamvonhorror.blogspot.com and my outfit of the day can be viewed here www.youtube.com
Категория: Howto & Style
Время: 00:03:58.500
Теги: beautifeye contact lens lenses tutorial how to blue eys green aqua iamvonhorror makeup summary mac nars mineral eyeshadow black eyeliner market cheap bright marylin marilyn manson scary halloween
 

Le Midget's Contact Lenses: Collection

My collection of pictures and mini reviews on the brands I've worn in the past. Part 2: Ordering www.youtube.com Some pix + how to order: dirtontherocks.blogspot.com
Категория: Entertainment
Время: 00:04:27
Теги: midgetmakeup colored contacts bausch & lomb jade platinum waicon tricolor green freshlook colors colorblends colorvue contacts fusion
 

5200mm Canon Lens World's MOST powerful Super telephoto EF FD (updated upload)

READ!! Canon 5200mm F14 Prime Lens. The world's largest dedicated SLR Super Telephoto lens. Extremely rare. Made in Japan. Most probably a government ordered cold war spy tool - it certainly wasn't designed to just look at the stars with the use of it's ND filters... It uses a mirror & lens combination. The front lens is massive. Rear drop-in filters can be used. •Focal Length: 5150mm •Exposure Control: Light quantity is controlled with the use of built-in ND filters, corresponding to f/14, f/16, f/22, f/32 •Minimum Object Distance: 120 meters (Approx 393 feet!) •Size: 500mm(wide) x 600mm(high) x 1890mm(deep) [20x24x75.6] •Weight: 100kg (220 lbs) without stand. From a Canon Flyer: "This is the only ultra-telephoto lens in the world capable of taking photographs of objects 18 to 32 miles away (30km to 52kms away). Having a focal length of 5200mm, Canon Mirror Lens 5200mm can obtain one hundred times as large an object image as that of a 50mm lens." "For focusing this mounted or fixed lens on an extremely distant object, two aiming telescopes are set on the side of the lens barrel, and the entire lens is placed on a rigid stand which rotates smoothly. Minimizing the overall length had been a big problem in designing this lens. However, the Catadioptric system that is applied to the other two Canon mirror lenses (Canon 800mm f3.8 & 2000mm f11) has succeeded in reducing it down to one third of the nominal focal length. In general focal length and optical aberration increase ...
Категория: Science & Technology
Время: 00:01:30
Теги: 5200mm F14 Canon Prime Lens SLR DSLR EF FD EOS L series lens Worlds most powerful zoom lens Massive huge rare strange film 35mm Cine HD photo photographer photography Nikon Leica Carl Zeiss Made in Japan China heavy heatwaves super telephoto extreme moon shots close up scopes expensive odd zoom lens telescope mirror astronomy spy Big Camera Digital
 

Making Contact Lenses

Learn how to make contact lenses
Категория: People & Blogs
Время: 00:03:48.750
Теги: contact lenses lens make create eyes
 
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