What is the pixel pitch of the Canon T4i?

The Canon EOS Rebel T4i provides 17.9 megapixels from an APS-C sensor. This pixel density gives rise to a size of the individual pixel of 4.31µm.

The pixel size or pixel pitch can be calculated by dividing the sensor area by the pixel count and then taking the square root. In particular, the sensor in the Canon T4i measures 22.3mm in width and 14.9mm in height, so that the total imaging area of the sensor amounts to 332 mm². Moreover, the T4i has 5 184 horizontal pixels and 3 456 vertical pixels, for a total of 17.9 megapixels. Then, the size (height or width) of each individual pixel can be calculated as the square root of the ratio of the sensor area (332 mm²) to the MP count (17 915 904).

Larger pixels provide advantages with respect to gathering light, particularly in low-light situations. Large pixels notably have a better signal to noise ratio, meaning that they can better differentiate between incoming photons and the noisy signals that the internal processes of the camera create. As a result, big pixels are particularly helpful to the photographer when shooting with high ISO settings.

Sensor specs and performance

The table below compares the sensor specs of the Canon T4i to those of several similar cameras. The reported DXO values are indicators of the sensor's imaging quality (higher is better), covering color depth (DXO Portrait), dynamic range (DXO Landscape), and high-ISO noise (DXO Sports). Larger sensor cameras tend to outperform cameras of the same generation that are equipped with a smaller imager. On the other hand, larger sensors are more expensive and require bigger and heavier lenses than smaller light receptors.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Canon T4i	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	722	62
2.		Canon Rebel	APS-C	6.3	3072	2048	none	21.0	10.8	544	55
3.		Canon T1i	APS-C	15.1	4752	3168	1080/20p	21.7	11.5	663	63
4.		Canon T2i	APS-C	17.9	5184	3456	1080/30p	22.1	11.5	784	66
5.		Canon T3i	APS-C	17.9	5184	3456	1080/30p	22.1	11.5	793	65
6.		Canon T5	APS-C	17.9	5184	3456	1080/30p	21.9	11.3	724	63
7.		Canon T5i	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	681	61
8.		Canon T6s	APS-C	24.0	6000	4000	1080/30p	22.6	12.0	915	70
9.		Canon XSi	APS-C	12.2	4272	2848	none	21.9	10.8	692	61
10.		Canon XT	APS-C	8.0	3456	2304	none	21.8	10.8	637	60
11.		Canon XTi	APS-C	10.1	3888	2592	none	22.1	11.0	664	62

Further information on the sensor in the Canon T4i and the camera's operation can be found in the camera manual.

In the United States, the T4i was initially launched in June 2012 at a price of $849.

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Camera to camera comparisons

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