UP TO SPEED?
Marvelling at the imaging performance of the Sony A7S III at very high sensitivity settings – it still looks good at ISO 51,200 – it was a reminder of how far we’ve come in fairly recent times. I started my career shooting Kodachrome 64 – that’s ISO 64 – and then switched to Fujichrome Velvia 50 when the Kodak product started to become harder to get processed. Velvia 50 was rated at ISO 50, but if you wanted more details in the shadows you shot it at ISO 32. Anything above ISO 400 was pretty terrible in colour transparency films and the limit with colour negative was really ISO 800 if you didn’t want loads of grain. I rarely, if ever, shot with anything faster than ISO 100, even with…