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alright so im pretty new to this photography bit. I took a class my junior year which was 3 years ago. And it was with film. But anyways, the lenses. What are the differnet between them. Like 28mm-300mm or 17mm- Xmm. Does it affect the zoom? or something. What exactly does each lense have that the others wouldnt. And for the ISO, i was looking are reviews and when they show the pic in different ISO's it gets worse as it hits 1600. So what is the point of the higher ISO's if it is less quality pictures.

any help would be awesome


thank you

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ISO

ISO is the standard sets in the sensitivity of your image sensor. This standard is inherited by the image sensor in the films. Films are also rated in ISO. The higher the ISO the more sensitive your sensor or film. The more sensitive means you only need low levels of light to capture your image. The higher ISO is usually used in higher shutter speed or smaller aperture. Due to very high sensitivity your picture will be noisy if used in lower speed shutter. They used the highes ISO in review to check the noise of the image sensor. The image sensor by the way is the one refered in Megapixel. Hope this help!

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also with megapixels.. isnt the higher the better? Than why is all theses really good cameras have really low mp?

thanks again

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megapixel

Hi Clan,

Of course the higher the megapixel the better the picture should be. pixel stands for picture elements and the higher the number of your elements the more details you get in your picture. however the quality of your picture does not really on the number of pixel, there are factores like the lens used and the speed and performance of your sensor and of course the way you execute your shot.

Hope this help

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You also need to factor in the size of the ccd or cmos sensor. A small ccd sensor with say 7 mp, will produce less detail, and smaller print than a 6 mp with a larger ccd sensor. EX: point and shoot vs. dslr.

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i plan on getting the D50 or the D70, so they both should be pretty good for just 6.1mp?

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If you can afford it, I would get the D70
The D50 is good but the D70 is even better.
Also, from what I read, the D50 does not use the standard CFII card. So if you ever decided to buy a new updated DSLR like the Nikon D70 D200 or even a Canon, you would have to go out and buy all new memory cards.

As it stands now, all DSLR cameras use CFII cards but the D50 does not, it uses a SD card

see this link at DPReview

http://www.dpreview.com/reviews/com...70&show=all

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Yea im going to buy the D70, with my tax return. Which lense would be best?

thanks again

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I would suggest getting the kit lens - 18-70mm. It is outstanding for a prosumer lens.

Then at a later date - you can add to your arsenal of lenses....

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It seems that we did not address your questions about lenses, different lenses have different uses and abilities.

Lenses have two important numbers associated with them on is the speed and the other is the focal length. the speed is rated in "F" stops, the lower the number the better which means, an f1.5 opens wider and thus lets the light in faster and is more expensive than an f4.0 which is slower, the faster you let the light in the better. the next rating is the Focal length, low numbers mean wide angle meaning you can get more in the shot from left to right. these are good for landscapes and travel photos, on your Nikon it will be between 10 - 17mm.

Around 18 - 55mm are typically more for average length images around 35mm or so mimics a true perspective or what your eye sees good for general photography and the 55mm end is good for portraiture. above 55mmyou start getting into telephoto or more desciptively you start bringing images closer to you, good for taking wildlife or sports photos anything you want to get closer to. keep in mind the higher the number 300mm or 500mm the more steady your tripod will have to be to get a non blurry image.

Any lens with two numbers as a focal length like 18 - 55mm is a zoom lens and can be adjusted anywhere between the two lengths and a lens with only one number like 50mm is a prime lens often very usefull as they tend to be faster and sometimes clearer.

Although the camera needs to be a good recording instument the lens is considered by most to be he most important feature in photography.

I hope this helps

The Big Kahuna

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