Send the following on WhatsApp
Continue to ChatCalculate Bulb Time for Long Exposures; Sony A7R III https://www.edwardbacon.com/blog/2019/11/calculate-bulb-time-for-long-exposures-sony-a7r-iii/
Calculate Bulb Time for Long Exposures; Sony A7R III https://www.edwardbacon.com/blog/2019/11/calculate-bulb-time-for-long-exposures-sony-a7r-iii/