All the photos are shot in RAW, same ISO, same auto-exposure setting (evaluative) - same lens. The aperture may differ from camera to camera for the same subject. For some shots I moved farther-closer to the subject in order to keep the composition as similar as possible.
The raw files are imported in Adobe Camera Raw and saved as they are as JPG quality 10 - the only modification I did to ACR default setting is luminance smoothing set to 60.