Crop body

steve001

steve001

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Steve
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Hi all,

Sorry for possible sounding thick but I am new to this! Could you tell me what makes a crop body and how do you tell what you have got?:shrug:

Thanks,
Steve.
 
It's a reference to a dx sensor, that being smaller than the orginal 35mm used in film cameras. The newer digital FX, full frame cameras are the same as the film.

Sure someone more technical than myself will be along shortly.

Rob
 
Crop body has a 'cropped' sensor, ie it has been cropped and made smaller than a full frame sensor, which is 24 x 36mm - same size as 35mm film which was the standard in film cameras.

Your Sony has a cropped sensor. Any DSLR costing less than about £2k has a cropped sensor. They vary a little in size, but roughly 22 x 15mm give or take. Only major difference is 4/3rds format which is quite a bit smaller.

Associated with this is the crop factor, which is 1.6x for Canon and 1.5x for Nikon, Sony and most others. The crop factor is used to calculate the equivalent field of view, relative to film cameras, so that those people used to film can make comparisons.

So, if you are used to the kind of framing of a scene (how much you get in the picture) with a 50mm lens on film, you multiply by the crop factor to get the equivalent framing (field of view) with a crop camera. In this example, Sony 1.5x crop will give the same framing with a 33mm lens (50/1.5=33).
 
steve001 said:
Hi all,

Sorry for possible sounding thick but I am new to this! Could you tell me what makes a crop body and how do you tell what you have got?:shrug:

Thanks,
Steve.
Click to expand...

You have a cropped sensor camera. The crop factor for your Sony is 1.5x so if you were to use a 50mm lens on your camera it would frame like a 75mm lens, because the sensor in your camera is smaller than the equivalent full frame sensor.

http://www.cambridgeincolour.com/tutorials/digital-camera-sensor-size.htm

Nikon have several cropped 1.5x sensor camera's D60, D90, D300 being the latest, there Full Frame camera is D700....+ pro models D3 models
Canon have the same, 500D, 50D are 1.6x cropped sensor camera's, there Full Frame camera's are 5D MKII....pro 1D series, the 1DS (FF), 1D (1.3x)

Sony have just release their first full frame camera in the A850/900.

Olympus and Panasonic use a 4/3rds system which is basically a 2x cropped sensor.

The crop factor is the sensor's diagonal size compared to a full-frame 35 mm sensor. It is called this because when using a 35 mm lens, such a sensor effectively crops out this much of the image at its exterior, due to its limited size of the sensor
Click to expand...

Peter
 
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