I plan to shoot landscapes with the RX1 / RX1R. As such I wish to achieve maximum depth of field. I realise that small apertures are the key but I don't wish to use above F8 / F11. Are there any accurate and reliable depth of field scales that I source for the RX1 / RX1R ? What methods do you use to achieve max depth of field for the RX1 / RX1R ? Thank you kindly, Adam.