Thanks to my Camera Club Mate Richard -- a 'Canon Expert' I got my EOS 40D to switch on again after he fitted a new coin battery 2016 in the main battery slot. I just took some flowers in very dull light on way to Brentwood High Street for a Hair Cut . I used my Canon EF 85mm f1.8 lens at f11 for the Camelias and f3.2 for the Magnolias as I didn't want too much D.O F .