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Bellows Lens
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Image stabilizers are schemes to compensate for the motion of images due to air turbulence or telescope vibration. The most popular scheme is to use the so-called tip-tilt mirror. Image stabilizers have been around for a while in the home video recorder market, but have only recently has this technology become available to the stills photographer. As with a number of the previous breakthroughs this innovation was introduced by Canon. Image stabilizers work to give you sharper pictures by counteracting camera shake. Image stabilized lenses and cameras use two tiny gyros that precess with camera movement and send a signal via a servomotor to move lens elements, a prism, or the sensor plane in the opposite direction of your camera's movement.

Lens length does not alter during zooming and the front lens element does not rotate during zooming or focusing. The lens employs an almost perfectly circular barrel aperture, helping create attractive, even background blur. Lenses or cameras with image stabilization help, but they're often quite expensive. Surprisingly it's a bolt, washer, and some string.

Shoot Only IS mode is only activated when the shutter button is pressed. When set to Continuous, some blurring may occur depending on the subjects. Shooting in low light situations of course. With latest Image Stabilizer lens, you can handhold up to four stops to get usable picture. Shoot enough and you might get lucky and get a sharp one, even at really long speeds.

Secondly, an optical system increases power drain by roughly 30 percent when used constantly, reducing battery life. Finally, any type of stabilizer can lead to some unsharp images because it's deactivated after a few seconds of nonuse to conserve battery power. Second, high ISO images appeared "soft" because fine details were obscured by digital noise or by excessive (automatic) noise reduction processing.

Canon was able to reduce the overall size and weight of the binoculars by incorporating a new, Tilt Mechanism Image Stabilizer system. Unlike other Canon Image Stabilizer binoculars which use a vari-angle prism composed of two glass elements and a flexible bellows, the 8x25 IS model works by "tilting" a single lens element in the left and right lens barrels to counteract shake. Canon FS 100 Provides spotlight, portrait, nightmode, fire work, sports, snow, beach and sunset shooting modes for better quality. Canon and Panasonic use optical image stabilizer technology in selected cameras of their product ranges. The technology comes with specialized sensors inside the camera that detect a shake or wobble in the lens.

For more information on Image Stabilizers visit our site: All You Need to Know About Canon Image Stabilizers.

The Smart Way to Make Photo Enlargements

The market for digital cameras is evolving very fast. Even if you tried to keep up with the highest resolution, unless you are willing to invest in a new camera every six-twelve months you would find that impossible. However, some people buy a digital camera mainly because they want to enlarge their photos and the resolution is therefore very important.

Luckily there is a different way of achieving this, one that will keep you satisfied for many years. With an investment of under 1,000 U.S. dollars, you can purchase a used 4x5'' film camera and a high-resolution flatbed film scanner. This way you've got more than one hundred mega pixels in high-detail film, which you can enlarge to 30x40'' keeping the same quality. This technique has been successfully used for nearly on hundred years in both personal and commercial photography like wedding photos, portraits, documentary, landscape and advertising.

But where can you buy a used 4x5'' film camera? As these cameras have been widely used before 1960s, they can be easily found on U.S. auction websites. A good camera with lens can generally be purchased for no more than four hundred dollars. With flatbed film scanners is even easier. You can find a brand new one for less than five hundred dollars. All you have to do is make sure it can scan films.

There are a few features you should look for when buying such a camera: it has flexible bellows, it can be folded into a compact box, it accepts sheet film, the lenses are interchangeable, it has a ground glass focusing screen, it has an optical viewfinder accessory and it can be easily handheld. There are four main categories of lenses: general-purpose, wide field - generally used in landscape and close-ups, extreme wide angle and special effects. However, for most photographs all you need is a general purpose 127x152mm lens. If you want to take macro and architecture photos, you can buy a special lens manufactured after World War II.

They have excellent performance compared to today's cameras. Lenses can also be found on auction websites. When buying an old 4x5'' camera, make sure that: there are no light leaks in the bellows; there are no scratches or fungus on the lens; the lens shutter works fine at all speeds; the focus works good between the film and the ground glass.

Using a 4x5'' film camera coupled with a flatbed film scanner for enlarging photos is a viable and affordable option. A 4x5'' film camera is cheaper and usually offers better quality than top digital camera models. If you want even more detailed enlargements, you can always opt for an 8x10'' film camera. This offers four times wider film size and is though of as the ultimate step in photo enlargement. Analog product can sometimes work better than their digital counterparts. If you're doing photo enlargements a lot, you should try a 4x5'' film camera. You may be surprised of the results you can get with it.
About the Author

Alex is a writer about photography techniques for http://reshade.com . Reshade works in the field of online picture processing programs and offers a free online photo resizer web-tool. It's also possible to purchase a photo resizer application for Windows. Give it a try !

Does polycarbonate block all harmful UV?

have UV lights that I would like to put in a tube and block it's harmful UV rays. I plan to use a polycarbonate tube, but I'm getting conflicting answers on wikipedia if it 100% blocks harmful UV.

http://en.wikipedia.org/wiki/polyca...
Above link it says polycarb resists UV fairly. (right and colum in yellow)
On the same page bellow the graph it says: 0% transmission at almost exactly 400 nm, blocking all UV light transmission."

Then here:
http://en.wikipedia.org/wiki/uv_lig...

It says under "Eye" paragraph. "Some plastic lens materials, such as polycarbonate, inherently block most UV."

What's the straight story on this?
From what I gather. I think polycarbonate naturally blocks a majority of UV, but not 100%. That more treatment is needed to make it a 100% blocker.

100% protection - that is why they use them on glasses.

http://www.allaboutvision.com/lenses/polycarb.htm

Special chemistry between directors and actors has produced some of Hollywood's best movies
Hear ye! Hear ye! By proclamation — or Hollywood's version of it — the righteous outlaw of Sherwood Forest will once again return to the big screen. Be it further known that when "Robin Hood" opens next month - at the Cannes Film Festival and then internationally - it will herald the fifth collaboration between director Ridley Scott and actor Russell Crowe.

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