Digital Single Lens Reflex (DSLR)

What should you look for in a dslr camera lens?


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2007-09-01 15:29:05
2007-09-01 15:29:05

The focal length is an important consideration because all DSLRs do not have the same size image sensor. For a camera with a full frame sensor, a given focal length will provide a magnification, angle of view and depth of field similar to a 35mm film SLR. For cameras with smaller sensors, the magnification is increased by a factor of from 1.3 to 1.6. The angle is more narrow and the depth is likely also affected. This is more bang for the buck if magnification is desirable, but when you need a wide angle, such as a 24 or 35 mm lens, the size factor works against you. So you will get an angle of view more like you would see with a full frame sensor at 35mm x 1.6 or 56mm (not very wide). Fortunately manufacturers have produced a new series of lenses to give an extra wide angle of view for these bodies and sensors.

Care must be taken if you plan to use the lens on more than one camera, as some DSLR lenses extend deeper into the body (closer to the path of the mirror) and may not work on all cameras. These will often have some marking to indicate that they are for digital only, which signifies that the dimensions are unique.

A good lens for any SLR camera should be sharp and have a useful range of F-stops or apertures. Sharpness is part glass quality, lens shape (Spherical vs aspherical) and number of elements and type of coatings used. Smaller f-stop numbers (or large apertures) give faster shots in lower light and help to blur the background. While the larger number (smallest aperture) determines the maximum depth under any conditions. The widest f-stop will also dictate whether your lens will still auto focus with a tele-extender. So check compatibility.

These factors all have to be balanced against the cost and proportions of the lens. A heavy lens may require that a tripod is mounted at the lens instead of the camera. They can be cumbersome and obvious, making it hard to get candid shots. Lenses for full frame bodies tend to be more in the bulky category, but can be worth it.

Some 'digital' lenses have an extra coating designed to cut ghost due to the refective nature of the image sensor. There are differing opinions as to whether of not this is necessary. But there do not seem to be disadvantages.

Auto focus speed is determined by the type of motor and gears. This also affects cost. The type of mechanism can affect how long your batteries last or whether you have enough battery power for the lens to work as intended. You need fast focus for action shots. Some lenses have image stabilization. Not all stabilization designs are equal and sometimes that feature as already in the body.

The filter size is another factor. Does the lens take a filter which is expensive and hard to locate, or is it common and maybe the same size used with your other lenses?

Check the location of the manual focus and zoom controls. Are they easy to use? Does the price include a sturdy case and a lens hood?

Kind of wordy I know, but there is much to consider.


Related Questions

DSLR = Digital Single Lens Reflex It's a digital camera made to look like a 35mm SLR. Usually the lens is interchangeable, but not always. - - - - - It is a camera with a detachable lens for great shots Hope this helped

A Digital Single Reflex Lens or DSLR is a type of camera which uses a series of mirrors inside the camera, so that when you look inside the viewfinder of a DSLR, then you will see almost precisely what the camera sensor sees, accurate to a few thousandths of a millimetre. This construction of the mirrors makes the camera more expensive to make, and most cameras simply use the easier and cheaper method, digital viewfinders, which only work when the camera is turned on, whereas on a DSLR, you can look through it anytime (as long as the lens cap is off!)

A single lens reflex (SLR) is a camera that uses the same set of lenses to both focus the image on the CCD (digital) and enable the photographer to frame the picture. That is to say, when you look through the viewfinder of a DSLR you are looking directly at the object through the main lens. You are not looking at the digitally re-created picture of the object or through some other lens that is off-center of the main lens. A point-and-shoot camera will have some other mechanism for framing the picture.

The Canon Rebel DSLR is what you will want to look at.

SLR & DSLR are acronyms for: Single Lens Reflex and Digital Single Lens Reflex SLR gave photographers the possibility of seeing exactly what the camera is going to take by bouncing the image off a mirror into the viewfinder. Before the viewfinder was created it was separate from the lens which gave the photographer an approximate of what the camera is capturing however it wasn't very useful. Over time photographers were trying to figure out how to look through the lens to see exactly what the camera is capturing and placed a mirror in between the lens and film/sensor that reflects the image up into a prism and into your viewfinder- quite genius if you ask me. This system is called single lens reflex. Hope that helps!

Shopping online is a great way to save money on big ticket electronics like DSLR cameras. Look for the DSLR camera you want online and compare prices at several retailers to get the best prices. Remember to take shipping and tax costs into account when you compare DSLR camera deals available at multiple retailers. Sometimes these costs will negate the value of a price that would otherwise appear to be a great discount.

It will tell you on the camera lens or on the box. ask a salesman or look on the internet.

SGNL by Sony - 2010 Exclusive First Look at the New Sony A57 DSLR Camera 1-28 was released on: USA: 13 March 2012

SGNL by Sony - 2010 First Look Sony A99 Full-Frame DSLR Camera 1-52 was released on: USA: 12 September 2012

The JVC video camera does perform well and it does come with a good lens. This camera has good reviews on it and you can look them up through various websites.

Canon DSLR cameras start from around $550. Try Ebay or Amazon for the lowest prices. Also take a look at the Target, WalMart and Sears websites for further choice.

I'm looking for the same answer,someone reply!.cos' when i look on Google it suggests the similarities but not the differences-.-c'mon people:L.answ2. have a crack at Pinhole Camera in, and similarly with eye.

What you should look for in a computer camera depends on what the camera will be used for. The higher the megapixel the better quality the picture or video will be.

Consult your camera manual for specific instructions.Carefully blow any dirt off the rear lens element (use an air can).Note: NEVER USE AN AIR CAN TO BLOW INTO THE CAMERA BODY!You can easily damage the sensor or mirror with the high-speed air jet. Generally, there will be a red dot on the lens and another on the camera body. Match up the dots, insert the lens into the body, and turn it into position. You should be able to tell the direction to turn the lens by the location of the writing on the lens. The rotation is usually clockwise, as you look at the front of the camera. Do not force it. If it is fit properly, it should turn with little effort.

The lens that you should use to first look at a slide on a microscope is a low power lens then move on to a higher power for more clarity.

The "Fisheye" lens will give the photograph a convex look. I it is very difficult to create a photograph that will work well with the lens without leaving the subject too distorted.

so they make sure tht we can seem them good

Both the Canon 60D and the Nikon D600 have great reviews. Take a look at the specs, think about what you want from a camera, and figure out which best fits your budget. Neither is a bad choice, it just varies from person to person!

You should look for a camera that has red eye reduction and simple plug and print technology.

If that is happening it likely means you have a slightly tilted lens.

A SLR camera is a camera in which the viewfinder sees directly through the lens via a mirror. Most point and shoot cameras have an additional lens that you look through which is offset from the lens that takes the picture. This means the photographer sees a slightly different image than the camera records. A film SLR records the image on negatives rather than in a digital format.

Digital Camera Photography is very popular here in the United States because it is the newest form of technology for photography. Anytime you get professional photos taken they usually use a DSLR Camera. For more information look here:

It is a lens that mounts on the end of your camera lens. Some are wide angle adaptors (0.75x is an example) and some are multipliers (1.5x or 2x) which move you half the distance to the subject you are shooting. They can be handy adaptors, but can also reduce critical focus in your pictures, or degrade sharp focus. There are also lens adaptors for digital SLR cameras to use lenses from another type of camera. A lens adaptor could also screw onto the end of a lens to allow filters of another size to be mounted in front of the lens. ---- Just an added note: Although the principle is the same, not all adapters mount on the end of the camera lens. Some adapters mount to threads on the body which may be hidden by a removable ring. So the camera may not always appear to have threads when it does, if you know where to look. Check the manual.

For high quality pictures look for a camera with at least 8 megapixels.

Most cameras are built to be used both indoors, and out. You will want a camera with high resolution. 6 megapixels are good, but 10-12 megaixels are better. You also have to decide on the type of camera you want; point and shoot, or dSLR. a point and shoot is more affordable, easier to use, but cannot compete with the image quality of a dSLR. A dSLR will be more expensive, but will produce much more pleasing images. A good point and shoot: A good dSLR:

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