![]() ![]() Both the 5D Mark III and the 1D X are rated at -2 EV. On top of this, the 7D Mark II has a low-light sensitivity rating of -3 EV and it is a more suitable tool to be used with teleconverters (focuses at up to f/8 range with the center focus point). With the 7D Mark II, the flexibility to pick any of the focus points without worrying too much about potential focus errors is a great relief when shooting any kind of subject. As explained in my autofocus explained article, cross-type focus points are much more accurate when compared to regular/one-dimensional ones, so having that much precision in every single focus point helps a great deal in obtaining more in-focus images when using different focus points. In contrast, the Nikon D7100 has 51 focus points and only 15 of them are cross-type. The focus point coverage is also wider in comparison. Here is a comparison of the viewfinders between the 7D Mark II with the 1D X: Notice how much more overlaid information the 7D Mark II has in its viewfinder when compared to the 1D X. First of all, there are 65 focus points available, all of which are cross-type, compared to 61 focus points, 41 of which are cross-type on the 5D Mark III and 1D X. Canon EOS 7D Mark II + EF-S17-55mm f/2.8 IS USM 17mm, ISO 250, 1/60, f/8.0 Autofocus PerformanceĪlthough it might seem like the 7D Mark II might have the same autofocus system as on the 5D Mark III and 1D X cameras, the Canon 7D Mark II actually has a newly developed AF system that is better than all other current Canon DSLR cameras, including the top-of-the-line EOS-1D X. Overall, although the 7D Mark II does quite well in handling noise, its dynamic range performance is rather disappointing when compared to other modern APS-C sensors. In fact, as you will see from the camera comparisons page of this review, the 7D Mark II performs similarly at high ISOs and there is little difference between noise levels on the two cameras. DxOMark claims that a difference of 25% represents only 1/3 of a stop difference, so the 7D Mark II is not significantly worse in handling noise when compared to the D7100. However, do not be confused with the low-light ISO scores above – having a score of 1082 compared to 1256 does not represent 16% inferior performance. If you do not believe in numbers, see my post comparing Canon and Nikon in Dynamic Range, where I show how much worse Canon is in both overexposing and underexposing images.Īnd here is a summary of the comparison of the 7D Mark II to the 70D and Nikon D7100:īased on what DxOMark shows, the 7D Mark II’s sensor is inferior to the sensor on the Nikon D7100 in every way, from the color depth and dynamic range to high ISO performance. Look at how far up the Nikon D7100 is at lower ISO levels, reaching close to 14 stops of dynamic range, while the 7D Mark II struggles to reach 12. Now, this right here is the reason why Canon gets so much heat for its proprietary sensor technology. To understand how far Canon is behind its main rival Nikon, let’s go ahead and add the Nikon D7100 to the mix: ![]() ![]() ![]() As you can see from the graph above, there is practically no difference at ISO 100 and at other ISO levels, dynamic range improvements do not exceed half a stop. What’s particularly disappointing is how little the change is in dynamic range. However, it is important to note that the changes are not drastic and only appear to be noticeable at higher ISOs, particularly in regards to SNR. Indeed, it seems like Canon has made changes to the sensor on the 7D Mark II since both noise / SNR and dynamic range appear to be a bit different. While I have not compared the two cameras side by side to see what differences there are in performance, folks at DxOMark performed their analysis of both cameras and here is their conclusion on high ISO performance and dynamic range: Although the 20.2 MP APS-C sensor sounds a lot like the sensor from the 70D, Canon claims that the sensor technology was not reused in the 7D Mark II and that the sensor was newly developed for the camera. Unlike Nikon, which often buys sensors from other manufacturers like Sony and Aptina, Canon develops and manufactures its own sensor technology for its cameras. The Canon 7D Mark II sports a 20.2 MP APS-C sensor (1.6x crop factor), with a native ISO sensitivity of 100-16,000, which can be pushed further up to ISO 51,200. Image Sensor, Dynamic Range and AF Performance ![]()
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