Tokina 11-16mm f2.8 lens on the Nikon D700 (full frame)

dombowerphoto.blogspot.com shots taken at f4 and compared against the nikon 14-24mm f2.8 in this video i am showing the affect of the tokina 11-16mm vs the nikon 14-24mm super wide angle lenses the tokina is a dx only lens but it can cover a full frame as you can see here

Digital camera basic tips pointers and advice

First time digital buyer user advice and terminology to consider. Sensor size vs. image quality in ultra compact digital zoom consumer cameras to DSLR models. Cameras shown in this video are the Canon SD770 IS 10 MP ultracompact camera. Canon S3 IS 6MP zoom which zooms from 36mm wide to 432 telephoto, not the 180 I said in the video my mistake. And finally the Canon 30D 8 MP Digital SLR camera. Video shot with JVC HD7 camcorder. Does not do well in low light, as you can see.

The Parts of a Camera and Their Functions

Photographs enable us to capture events and moments in time and preserve these for years. This is made possible by the use of photo Cameras. A Camera is a technological device for obtaining photographic images of objects of interest.

This device is made up of three basic elements: the mechanical element (the Camera body itself), the optical element (the Lens), and the chemical element (the Film [although there are also digital cameras that don't make use of the traditional film]). All the other numerous parts and components that make up a camera simply function to support or enhance any of the above mentioned core functions.

Listed below are 15 functional components of a Camera, following which I will explain the function of 10 of them.

1. The Camera Body
2. Lens
3. Film
4. Viewfinder
5. The Shutter
6. Aperture
7. Shutter Release Button
8. Shutter Curtains
9. Shutter Speed Control Knob
10. Film Cavity
11. Film Rewind Knob
12. Film Sprockets
13. Flash Shoe (Accessory Jack)
14. Focusing Ring
15. Self - Timer Button

(1) The Camera Body: All the internal mechanical, optical, and chemical parts of a camera are held together by the Camera body. This serves to protect these very sensitive parts. The Camera body also serves as a framework against which the other parts of the Camera articulate to function properly.

(2) The Lens: The Lens is undoubtedly the most important component of the Camera (considering the main purpose of a Camera). The lens takes the beams of light bouncing off an object and focuses this light on the image plane so that a real image is formed that can be photographed. The greater majority of the modifications and refinements that have occurred in the camera since its invention have centered on or around the Lens, and that underscores the importance of this part of the camera.

(3) The Film: This is a thin roll of light -sensitive plastic which is placed at the image plane of the Lens. When the Camera is ready to take pictures, several devices combine to ensure that the film is exposed to the image formed by the lens. When the film is exposed to the image coming from the lens it records the image, and we have pictures! Before and after use, the film is stored in a light-tight film holder. Unknown to most persons, there are no black and white or color cameras. We only have black and white and color films. It is the film that determines whether a picture will come out as black and white or colored.

(4) Viewfinder: This is a part of the Camera that helps us decide which object we want to photograph. It helps us point the camera in the correct direction and indicates what will or will not appear in the final photograph. Viewfinders are of two types: (1) Those that work independent of the lens, known as aim-and -shoot cameras; (2) Those that show exactly what the lens is seeing, found in SLR (Single Lens Reflex) cameras.

(5) Shutter: The shutter determines how long the film is exposed to light or to the image coming from the lens. Shutters are of two types: the one located just behind the lens, called the leaf shutter; the second type is located in front of the film plane, it's called the focal plane shutter. The shutter consists of two metal sheets or "curtains" which remain shut or closed when the camera is not in use. But when the shutter release button is depressed, one of these curtains slide open to allow the image from the lens to hit the film. After a brief moment, the second metal sheet of curtain will slide in to close the opening. The interval between the opening and closing depends on the speed we selected using the shutter speed knob.

(6) Aperture: This is an opening, or hole, at the center of the lens. The function is to cause images to be brightened or dimmed uniformly. This is achieved by increasing or reducing the size of the hole, using a knob called the Aperture Ring. When the opening is enlarged, more light passes through the lens, causing the picture to brighten. Conversely when the opening reduces, less light is let in, thus dimming the image or picture.

(7) Flash Shoe (or Accessory Jack): This is the hook to which one may attach a flash, if one chooses to use a flash and the camera supports it. This accessory is located just above the Viewfinder.

(8) Focusing Ring: When we are looking through the Viewfinder, it is the Focusing Ring that is used to bring the object into focus. It is more like an adjuster.

(9) Film Cavity: This is the location where the roll of film is placed in the camera. This cavity is secured from light. It is a sort of dark chamber whose job is to ensure that the only light reaching the film is the one coming through the lens, and even then only when the shutter is open. This is important since the film cannot differentiate between the light coming from the lens and the one coming from other sources. Without this cavity lights from the surrounding area would easily hit the film and distort the picture quality.

(10) Film Rewind Knob: This knob is used to return all the exposed roll of film back into their casing. This must first be done before removing the exposed film from the camera; otherwise the negative will be ruined! Some modern cameras perform this function automatically once we've taken the last exposure.

Summary: A Camera helps us preserve memories. Understanding how the various parts of this devise work will help us get the best from our Cameras.

the author, kenneth is a leading writer on SEO articles, he is also a freelance article writer. he has written over 200 articles for online clients. some of his personal articles can be read at http://www.kennetworks.com. kenneth can also be reached via info@kennetworks.com.

Reverse lens technique tutorial

© DeadlyTeaParty Property This is a video showing you how to use the reverse lens technique. This allows you to take macro photographs without having to buy and expensive macro lens. Music: Cavern of Time V2 by Butterfly Tea #59 - Top Favorited (Today)) - Howto & Style - United Kingdom (Thursday 17th February 2011) #92 - Top Favorited (Today)) - Howto & Style - United Kingdom (Thursday 17th February 2011) #74 - Most Discussed (Today)) - Howto & Style - United Kingdom (Friday 18th February 2011) #73 - Most Discussed (Today)) - Howto & Style - United Kingdom (Friday 18th February 2011) #54 - Most Discussed (Today)) - Howto & Style - United Kingdom (Friday 18th February 2011)

Easy Modification for a Canon 10-22mm to use on a 1D Series (1.3x)

How to mount a 10-22 to your 1D. Filmed on a T2i.

2009 SLR Camera Comparison Guide

In this article we will do a SLR camera comparison, between four models: Nikon D40, Nikon D90, Canon EOS Digital Rebel Xsi and the Canon EOS 40D.

Nikon D40

The Nikon D40 digital camera has a resolution of 6 megapixels and an LCD that has 2.5 inches and 230,000 pixels. It can take photos at a maximum speed of 2.5 photos per second. The shutter speed of the camera is 1/4000 sec. The duration of the flash sync is 1/500 seconds.

This camera had help files included and you can also edit photos right from the menu. The ISO varies between 200 and 1600. If you want, you can also use a wireless remote with the camera.

Canon EOS Digital Rebel Xsi

A 12.2 megapixel camera, the Digital Rebel Xsi comes with a kit lens that is image stabilized, sensor cleaning that is built in, Live view and dust removal software. The LCD screen has 230,000 pixels on a 3 inch LCD screen. A bit faster than the D40, this camera can take 3.5 photos per second. The duration of the flash sync is 1/200 sec.

The ISO varies between 100 and 1600. This camera also has a nine point autofocus, mirror lockup, spot meter an option for automatic depth of field. You also have the option of a wireless remote and flash if you need them.

Nikon D90

The Nikon D90 is a camera with 12.3 megapixels and an impressive 3 inch LCD screen with 920,000 pixels.. The Live View also has movie mode, but you don't have the option to autofocus once you start shooting the movie.

You can shoot movies in the following formats, at 24 frames per second: 320x216, 640x424 and 1280x720. It has 11 autofocus points and the ISO is between 100 and 6400.

For live action photos, you can take 4.5 frames per second. The flash sync takes 1/200 seconds and the shutter speed is 1/4000 sec.

Canon EOS 40D

The Canon EOS 40D has less megapixels than two of the cameras above (10.1 megapixels), but it compensates with great performance for live action shots. It can take 6.5 photos per second, with a shutter speed of 1/8000 sec.

The camera's body is made of magnesium and it has weather seals and a kit lens with image stabilization. It also comes with a built in cleaning sensor and Live view, which you can also use with an optional grid overlay. There are six program modes that you can choose from.

Getting the perfect SLR camera, is never an easy thing, due to the constantly changing technology. Fortunately, there are plenty of helpful websites online, that can narrow down your search and help you find the SLR camera with all the features important to you.

The Best Digital SLR Cameras Ever

Now that you've decided to graduate to the big boys end of the pool. Time to buy yourself a shiny new SLR digital camera, and leave the old point and shoot for the kiddies to play with. However, after reading up on SLR technology, your a little baffled and bewildered.

Have no fear, as everything will soon be cleared up. SLR camera technology can be somewhat of a maze that sends you wandering from one confusing review to the next great marketing sales pitch, and back again. If your the type that needs to understand all the finer points of any product before making a purchase, this could be the never ending purchase for you.

Buckle up baby, and lets go. Believe it or not, all that technology your battling to understand is a good thing. Really, it is. The past few years in the digital camera industry, have been extremely competitive for the manufacturers and retail folks. As a result, each year they cram more and more features into those shiny little SLRs, and continuously drop prices to stay ahead of the competition.

OK, here's the easy part. If you want to buy a good SLR, there's no need to fret. Just about any of the top three SLRs will do the job for you. It's pretty much impossible to get a bad camera out of this bunch. These days my short list would look something like this. Anything from the Canon Rebel lineup would be good. The XSi or the new T1i should be a corker. Or for some variety, a Nikon D40 or Olympus Evolt E510.

It's quite remarkable, that you can have any one of those SLRs for under a grand. That's a lot of camera for very little coin. Don't even ask me what I paid for my first digital camera. I get ill just thinking about it.

I can make the above assumption with a great deal of confidence, because I know that the single biggest deciding factor to your success as a photographer, has nothing to do with the camera. The single most important feature of any camera, is the skill of the person with their finger on the shutter. A great photographer can take amazing photos with disposable camera.

Another thing you can do, if your still interested in looking around a bit more, is to get some hands on experience. Borrowing a SLR from a friend or relative to try out is a good idea. You'll get a feel for the controls and how everything works. The more different models you try out, the better feel you'll have for what feels right for you. Like I said, your the most important part of the picture taking process.

While it can be nice to visit your local camera store to get some hands on experience, it makes a lot of sense to make your final purchase online. All the big name websites have very fair return policies, and online shopping is the best way to guarantee you the price and selection you want.

Well, that's about as simple as I can make it. Time to decide. Believe me, it's a lot more fun taking pictures, than shopping for cameras.

Getting the perfect camera, is never an easy thing, especially with the way digital technology is constantly changing. Fortunately, there are plenty of helpful websites online, that can narrow down your search and help you find the camera with all the features important to you.