Canon has been pursuing high-quality imaging by comprehensively examining products based on various assessment criteria — including resolving power, dynamic range, rich gradation, and low noise etc. Canon responds to the demand for high image resolution from Canon users by creating full frame EOS cameras with overwhelmingly high pixel count, EOS 5DS and EOS 5DS R. The naming of EOS 5DS and EOS 5DS R clearing reveals their positioning of ultra-high pixels, targeting professional photographers and advanced amateurs pursing high resolution power.

The Naming of EOS 5DS and 5DS R
In the past, Canon has responded to a wide range of user needs by offering two models in the EOS-1D series, they are: EOS-1D series, which focuses on a balance between image quality and shooting agility, and the EOS-1Ds, which provides higher pixel count and resolution. Thus, Canon and its supporting users readily recognize a camera name with a suffix “S” will be a model with assured resolving power. Based on this understanding, Canon has named the EOS digital camera with ultra-high 50.6-megapixels as “EOS 5DS” in honor of the EOS-1Ds series. EOS 5DS bears a golden nameplate inherited from the EOS-1Ds series.

Moreover, the EOS 5D S variant model that is designed with the effect of optical low pass filter cancelled is named EOS 5DS R, in which (“R” stands for “resolution”. It features a silver nameplate with a Red ‘R’ on it which symbolizes maximum clarity brought by the ultra-high-pixel resolving power.

EOS 5DS R: Cancellation of Low Pass Filter effect delivers even higher resolving power
To minimize the occurrences of moiré and false color, optical low pass filters (LPF) are often fitted in front of image senors in digital cameras. However, the LPF reduces the apparent resolution. With the increase of resolution, the occurrence of moiré and false color becomes lower than before, but Canon believes it is necessary to include LPF in EOS 5DS to ensure the occurrence of moire and false color is bring to absolute minimum.

For photographers who are looking for the ultimate resolution, Canon has launched the EOS 5DS R which is designed to cancel the effect of the optical low-pass filter (LPF), this cancellation simulates the removal of LPF and takes full advantage of the original resolving power of 50.6- megapixels CMOS sensor. However, the Probability of moiré and false color occurrence is higher in EOS 5DSR when compared to EOS 5DS.

In EOS 5DS R, the “Low-pass filter-1” in front of the CMOS sensor separates the subject image into two vertically, and low-pass filter-2 merges the separated images into one image again. By cancelling the low-pass filter’s effect in this way, it is equivalent to not having a low-pass filter. The resolution of 50.6-megapixels CMOS sensor becomes more apparent than EOS 5DS.

Comparison of EOS 5DS and EOS 5DS R Images

Demonstration Photo