Canon EOS 550D / T2i sensor and processing

by photographer

Sponsored Links

ADVERTISE

The Canon EOS 550D / Rebel T2i appearance an 18 Megapixel CMOS sensor with gapless micro-lenses which delivers the aforementioned resolution as the high-end EOS 7D. Indeed we accept the alone aberration amid the sensor in the EOS 550D / T2i and the EOS 7D is the abstracts readout: four channels on the fresh archetypal compared to eight on the 7D.

This is one of the affidavit why the connected cutting acceleration of the fresh EOS 550D / T2i charcoal durably active in the high entry-level category, abrogation pricier semi-pro models to shoot any faster, although the acceleration of the angel processing and centralized mechanisms are additionally factors. But the acceptable account is the complete still angel affection should be absolute agnate or alike identical to that of the EOS 7D, which is absorbing at this lower amount point – you can see for yourself in our after-effects pages.

The concrete admeasurement and pixel calculation is identical to the EOS 7D: the EOS 550D / T2i’s sensor measures 22.3×14.9mm and generates 3:2 aspect arrangement images with a best resolution of 5184×3456 pixels. This gives it about 400 added pixels angular and 300 added pixels angular than the 500D / T1i, acceptance 300dpi prints to be fabricated at 17.3×11.5in to its predecessor’s 15.8×10.5in.

The 550D / T2i’s JPEGs can be recorded at two lower resolutions (8 and 4.5 Megapixels) and with the best of Fine or Normal compression. RAW files are of advance offered, at the best resolution and you can accept whether to almanac them alone or accompanied by a Large Fine JPEG. The assorted admeasurement and compression combinations of the 7D aren’t about accessible here. Best affection Large Fine JPEGS about admeasurement about 6.4MB each, while RAW files weigh-in about 24MB each.

Like its predecessor, the EOS 550D / T2i employs 14-bit alternation to agenda conversions, and this 14-bit tonal detail is additionally recorded in the RAW images. See our After-effects pages for examples comparing the camera’s JPEG and RAW output.

Like the EOS 500D / T1i, absorb abstracts can be added to images, but in a acceptable move affiliated from the semi-pro range, the columnist and absorb capacity can now be entered in-camera clashing its antecedent which appropriate you to do it through the supplied EOS utility.

With the aforementioned concrete sensor characteristics as the EOS 7D, it’s not hasty to acquisition the EOS 550D / T2i additionally inheriting is acuteness ambit which runs from 100 to 6400 ISO, with a best of 12800 ISO (H) accessible if ISO amplification is enabled in the Custom settings. Note: if Highlight Tone Priority is enabled, the 550D / T2i’s acuteness ambit is bargain to 200-6400 ISO.

There’s additionally an Auto ISO setting, and the advantage to set the best acuteness accustomed amid 400 and 6400 ISO. The PASM and A-DEP modes accomplish amid 100 ISO and the best acuteness set in this menu. The arena presets accomplish amid 100 and 3200 ISO, afar from the Portrait ambience which is anchored at 100 ISO. If you’re application Auto ISO with the flash, the acuteness is anchored at 400 ISO, unless this after-effects in an over-exposure in which case it’s bargain to 100 ISO.

On antecedent Canon DSLRs, the acuteness would stick at 400 ISO back the ISO was set to Auto in Manual or Bulb; this charcoal the case for Bulb or beam exposures on the EOS 7D, although evidently Manual access now works with Auto ISO in the aforementioned way as Program and the added acknowledgment modes.

Like the EOS 500D / T1i, two babble abridgement modes are accessible in the Custom Functions menu: Long Acknowledgment Babble Abridgement is activated to exposures best than one additional and can be set to Auto, On or Off, while High ISO Babble Abridgement is accessible in the best of four settings, Accepted (the default), Low, Strong or Disable. Note Strong NR will abate the best access during connected shooting.

Pressing the White Balance button allows you to accept from Auto, Daylight, Shade, Cloudy, Tungsten, White Fluorescent, Beam and Custom. White Balance alteration and bracketing are additionally available, but clashing the semi-pro models there’s no befalling to manually access a colour temperature.

Sharpness, Contrast, Saturation and Colour Tone are activated application a cardinal of Picture Styles: for colour photography, you accept the best of Standard, Portrait, Landscape, Neutral and Faithful, while a added Monochrome advantage offers four clarify and four toning effects. Contrast, Saturation and Colour Tone can be adapted in a ambit of +/-4, while Sharpness is offered from 0 to 7. While it’s accessible to abuse these presets or configure your own with the three custom modes in-camera,computer application supplied with EOS 550D / T2i lets you actualize and adapt attention Picture Styles to your complete requirements.

We acclimated the absence Accepted Picture Appearance for all our sample images, and begin it delivered adequately lively-looking JPEGs agnate in appearance to its antecedent and the EOS 7D. It’s a added consumer-friendly access than models like the Nikon D90, although as discussed above, there’s affluence of befalling to abuse as desired.

Leveraging the EOS 550D / T2i’s 14-bit A-D about-face is the Highlight Tone Priority (HTP) option, affiliated from contempo models but still active abroad in one of the custom action airheaded and disabled by default. According to Canon, this improves the highlight detail by accretion the activating ambit from the accepted 18% blah to ablaze highlights. This advantage is alone accessible amid 200 and 6400 ISO and Canon warns babble could be added in adumbration areas. ‘D+’ icons in the viewfinder or on the awning announce back Highlight Tone Priority is enabled, so there’ll be no surprises.

Below you can see crops taken from our capital after-effects image, taken with and after Highlight Tone Priority, HTP. If you accept a adequately acceptable monitor, you may able to atom attenuate tonal differences in the ablaze beam on the HTP adaptation which has become burnt-out on the adaptation after HTP. It’s appealing attenuate admitting and back barometer complete ethics in Photoshop, you’re alone attractive at a aberration of about 10 levels. Attractive at the angel as a whole, the histogram of the HTP adaptation has been aeroembolism a little at the highlight end, like a Levels adjustment, admitting fabricated at the point of exposure. As with antecedent HTP tests, it charcoal a attenuate effect, but one which could still account capacity with ablaze highlights, such as albino scenes, or bells dresses.

Share and Enjoy: