Video Camera Zoom Lenses

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December 9th, 2008 admin Leave a comment Go to comments

Video Camera Zoom Lenses

Digital Camera - Capture Golden Moments

A digital camera is a camera that takes digital photographs on a light-sensitive sensor. Many digital cameras can also record sound and videos besides still photographs. These cameras can store thousands of images on a small memory space. The users can also edit the stored images. They can also delete the stored images. Deletion of stored images will free the device's memory which can then again be used for taking more photographs.

The digital cameras now-a-days are being incorporated into devices like mobile phones & personal digital assistants (PDAs) and vehicles. There are various types of digital cameras like video cameras, line-scan cameras, bridge cameras and live-preview cameras. The video cameras are further classified as camcorders, professional video cameras and web-cams. While a web-cam is attached to computers for video conference purposes, a camcorder is meant for the use of amateur photographers.

A Bridge camera often has a super-zoom camera lens that provides a very wide zoom range. These cameras are often confused with digital SLR cameras as their appearance is similar to each other. Many of the Bridge cameras store images inloss-less RAW format. They are generally lighter that DSLR cameras and provide images of good quality. Most of the compact digital cameras store images in Tagged Image File Format (TIFF) and Joint Photography Experts Group (JPEG) file formats. Some cameras also use formats like Design Rule for Camera Format (DCF), Digital Print Order Format (DPOF) and Exchangeable Image File Format (Exif).

Zoom camera lenses are designated as 3x, 4x, 5x etc. These designations refer to the ratio between the longest and shortest focal lengths. A larger zoom designation does not necessarily mean that the image cannot be magnified any more. A zoom lens is one wherein a photographer can vary the focal length of the camera lens within a predefined range. The zoom lens allows users to achieve a variety of perspectives and compositions. These zoom lenses come handy when the user has to capture images of a dynamic subject matter like an athletics event.

About the Author

Jayson Pablo, an author who writes on different themes for Rupiz Compare and appeal to visit the site to get information about cunsumer electronics and Digital Camera.

What is the name / how do you do this video camera effect?

Okay, so I know this is a long shot, but there is this camera effect that I've loved ever since the first time I saw it. I'm an amateur learning the ropes, so I'd like to either know the name of the effect (so I can look up how it's done and with what lenses and equipment) or I'd like to know directly about the technique.

It's a bit difficult to describe, but I'll try. The best way to put it is that it's a zoom technique where the background and who ever is in the foreground zoom at different rates. I think there is very little zooming into the person, but it looks like the background around them is being "compressed" by a lens and moving in closer. There's LOTS of examples of this techniques in movies but I can't think of any right now. I do know that it's in the "Angel in Disguise" short by Tenacious D.

I know that's not too much info to go on, but I'm hoping someone will know. It has to be a camera technique and not a post-production technique.

Thanks.
You are my hero!!!

I think you are talking about the effect that Hitchcock created by zooming in at the same time as he had the lens move back to broaden the image. In other words, the camera is moving in closer to the central figure/object and the background seems to move away.

(see link below)

Telescope Lens Gets Digital Camcorder Closer To The Action