Norman Chappell wrote: > I'm surprised no one has yet mentioned the work around for this DOF issue.
> Anyway, the work around on an 30/Elan 7, or the 50E (and probably the 3 & > 1v) is to choose your near and far points as usual, but then without > changing focus point, switch the lens to MF so that you effectively "lock > in" the focus point. Switching modes has been mentioned numerous times; doing so is a minor nuisance, but at least it's slightly easier on the 1n an 1v than on some of the others. Setting CF4 (to 1 on the 1n and 1v) is an alternative to switching the lens between AF and M. For me, it's considerably eaiser. YMMV ... > I think its [DEP] a valuable tool in certain situations but the fact that > Canon choose a .2mm CoC is a bit limiting I think. Canon claim they use 0.035 mm for CoC; 0.2 mm is a common value for CoC in the final image (i.e., the print). > I find just an extra stop or 2 is normally fine > depending on EV level and resultant shutter speed. Closing down 1 step is equivalent to reducing the CoC to 0.025; two steps is equivalent to 0.017. I may have missed a post, but I'm not quite sure how the idea of pressing the DoF preview button got into the discussion. Pressing the DoF preview while changing apertures will give the user a rough preview of the effect, but it seems to me to be a different animal than DEP mode. DoF preview is invaluable for ensuring that something is sufficiently OUT of focus, but I, as many others, find it difficult to accurately judge sharpness through a small dark viewfinder. This is precisely where DEP mode offers the greatest benefit; it's unfortunate that using DEP isn't a bit more user-friendly on some models. Jeff Conrad * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
