I plan to use my Canon 77Da + Sigma 105mm A f1.4 to photograph the the heart and the soul nebula.
I would like to use my l-eNhance clip filter and have two questions:
Can I use f1.8 without imaging problems with the l-enhance?
Do you think 2 minutes (ISO 800) are enough exposure time for one light frame?
Hi , 2 minutes will be enough on ISO800, because a minute and a half are enough with the same canon, but NOT modified!, and same filter on ISO1600 and f/6.
I would even go with ISO 400. And increase the f number more. I don't know if f/1.8 will be good for astro. (What are the levels of chromatic abberation and astygmatyzm?)
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Edited by grozmaistor, 26 October 2020 - 10:02 AM.