Guest Lad98 Posted April 17, 2014 Share Posted April 17, 2014 I have an unmodded Canon 60d and was wondering what would be the maximum length of exposure I could take. Is there a point past which I would just be wasting time. Of course guiding is an issue, but putting that aside, is there a point when the censor is full. Link to comment Share on other sites More sharing options...
Guest Kheldar Posted April 17, 2014 Share Posted April 17, 2014 Yup and it varies by sensor and sky conditions and scope. Sorry to be so vague but it's hard to answer equivocally, if you watch the histogram with increasing exposure length - you've gone too long when it spills over the right hand side of the graph Link to comment Share on other sites More sharing options...
Guest Kheldar Posted April 17, 2014 Share Posted April 17, 2014 Oh it varies by target too Link to comment Share on other sites More sharing options...
Guest Lad98 Posted April 17, 2014 Share Posted April 17, 2014 thanks for the reply. Thought it would be difficult answer. I was curious to find out so as not to be taking say 10 minutes when the sensor would be full after 7 minutes. But like you say there are too many variables to consider. Link to comment Share on other sites More sharing options...
glider Posted April 17, 2014 Share Posted April 17, 2014 Typically for my sky I start at ISO800 and shoot 5 minutes. If the histogram is less than half way to the right I turn down to ISO400 and shoot 10 minutes. ISO1600 and upwards is too noisy for my 1000D so I don't go there. Link to comment Share on other sites More sharing options...
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