With only £50 separating the EOS 750D from the EOS 760D it asks the question; is there a need for two beginner models so similar in the Canon EOS line-up? Michael Topham investigates
Canon EOS 750D Review – Image Quality: Detail and Noise
At ISO 100 the 750D resolves cleanly to 3200l/ph, which is what we’d expect from an APS-C sensor with an anti-aliasing filter. As the sensitivity is increased, the resolution drops gradually to 3000l/ph and then to 2800/lph at ISO 1600. The sensor preserves 2800/lph up to ISO 3200, but from this point onwards detail deteriorates more rapidly as the sensitivity is increased to about 2600l/ph at ISO 6400, reducing to 2400l/ph at ISO 12,800. At the maximum expandable ISO setting of 25,600, the 750D’s sensor struggled to resolve more than 2200l/ph.
The 750D produces exceptionally clean images at low ISO settings and it’s only as you start to encroach ISO 800 that the first traces of luminance noise become apparent. Noise at ISO 800 is by no means offensive and the noise reduction that’s automatically applied by the camera to its JPEG files doesn’t have an obvious impact on the level of detail that’s captured until you reach ISO 3200.
Pushing beyond ISO 3200 sees an increasing level of noise introduced into JPEG and Raw files, however acceptable results can be achieved at ISO 6400 by shooting in Raw and carefully applying manual noise reduction in post.
ISO 6400 is the upper limit at which we’d want to push too though and I recommended to steer clear of ISO 12,800 and 25,600 – there’s particularly garish chroma noise in the latter.