Such as: EOS R / EOS RP / EOS R5 / EOS R6 / EOS R3 / EOS R7 / EOS R10. (Reference image) DSLR can't use! 2PCS Gas Saver,Fuel Sync - Drive Farther,Save More Fuel Instantly, Automotive UK. This is simply because a small aperture makes it easier for dust on the CMOS to appear in the photo, which was previously difficult to detect with a large aperture.