Michael Hastings
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- Dec 29, 2006
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Yep, agreed. As wide as possible without breaking the bank, is that possible ? Is there any given formula for working out the angle of view in degrees in relation to the focal length of any given lens? ie what should we expect as a field of view in degrees from say a 10mm as opposed to a 14mm? I have gotten so used to shooting the Z1 with the Fathoms 120 degree external WA adapter lens. What focal distance lens would be required on RED to replicate the 117 degree FOV of the Fathom SWP44?
Cheers,
Mark.
Mark: This is my point - virtually all of us have been using substantially wider lenses than a 14 on RED. I don't know if the Fathom is 117 horizontal or diagonal but the Canon chart shows 10mm is 107 diagonal on APS-C (virtually identical to RED) so even less horizontal. The Arri chart shows the 10mm Ultraprime is 100 degrees horizontal and even the 8R is only 110 degrees horizontal.
This is why I suggest the 10-22 Canon or maybe better the 11-16 tokina as the sort of "standard" underwater lens with RED with the possibility of the 14mm for the "ultrasharp" work in very clear water.
What we all kind of wish for (still photographers too) is an EF-S prime lens version of the 14mm which would be about a 9mm, but nobody knows if or when that might happen.