Friday, May 2, 2014

Help with cameras please?




Ohio


Okay so I need a new camera. At the moment I'm using a Sony Cyber-shot - that's all I have. I am thinking about getting a proper one for Christmas. I have around £200 - £250. At the moment I don't really know the difference between DSLR film and digital. Could someone explain them two please.

I think I just want a decent camera that will take sharp pictures (mainly of people in a surrounding) that I can load straight onto the computer and edit them upload, etc.

Any help would be appreciated!



Answer
There are NO DSLR film cameras. Only DSLR's (digital single lens reflex cameras). The SLR's that use film are called 35 mm SLR's

The difference between a camera like your Sony called P&S cameras and a DSLR are as follows:

The DSLR has a sensor that is at least 15 times larger than a P&S
DSLR's are fully adjustable ... P&S cameras pick all the exposures for the user.
DSLR's can use lenses from fisheye to extreme telephoto .. a P&S has one lens ... no chance to change to another one.
The electronics on DSLR's are much more sophisticated than any P&S camera

DSLR Lens Help :) ??




scuba_dive


I've seen all these lenses like 18-55 and 24-105, what do these numbers refer to -- explain!! I know for example 24mm is a wide angle lens (I think) but why?


Answer
On a APS-C sensored camera, a 24 mm lens is not that wide an angle lens. The wide angle lens range for those cameras are from 10 mm to about 18 mm, so a 18-200 mm lens will provide you with a wide angle to long telephoto range and a 10-24 mm lens will provide you a super wide angle lens to moderately wide angle lens

In general the shorter the lens, the wider field of view of coverage it will have, hence it is called a wide angle lens. There is an important part you may not know about. The angle of coverage of a specific lens length differs depending upon the size of the sensor or film.

For instance.

A 65 mm lens is a wide angle lens when used on a 4x5 view camera
A 50 mm lens is a wide angle lens when used on a medium format camera
A 24 mm lens is a wide angle lens when used on a full frame camera like a 35 mm SLR or full frame dSLR
A 14 mm lens is a wide angle lens when used on a APS-C (so called cropped sensor) dSLR
A 4.5 mm lens is a wide angle lens when used on a P&S camera

Here is a link to what various focal length lenses can "see" when attached to a full frame SLR or ASPIC dSLR. Just choose which you would like to see at the bottom of this linked page

http://www.tamron-usa.com/lenses/learning_center/tools/focal-length-comparison.php




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