This is the link to ETC that gets the interactive S4 chart to figure your lens.
What lens do I need?
And that great page “LD Calculator” from Paul Pelletier:
LDCalc (you must install this)
Call us with ANY questions, even if it’s not our event. We love to help.
Book mark us, and check back. There is LOTS of useful information here. We will post photos of current and past jobs and can be a huge help in coming up with fresh ideas.
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