This may sound bizarre, but I do like to keep my macbook safe from harmful files or viruses even though macs are not prone to viruses like most say. However, I have to use this DSLR camera with an SD card from uni (for a film project) that has been used on different mac and PC computers and I don't know if these computers have been infected or not. The SD card has nothing on it, but my question is, can a DSLR camera/SD card carry a virus and transfer into my mac? even if it does not do any damage? Thank you.