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Hitting focus with the 35mm 1.4L canon is marginal at times even with AF. Relying on the camera's confirmation I would imagine would be less reliable.


Unlike the telephoto primes the wide lenses like the 35mm and the 24mm are not quit as consistent. What makes up for it with the wide angle lenses is that they are forgiving when stopped down with a deeper DOF or at farther distances. Close up, say 3 or 4 feet, shooting wide open is very demanding on the system. I did a series of tests with my 35mm and lens align. A normal series of tests at the recommended distance would produce the following results, (this was at the plus 3 setting) 18 shots back focus, 10 shots on focus and 11 shots front focus. I did a series of tests all total I used 1200 shots, these type of results were typical. Keep in mind when I say back focus or front focus, many of those pictures would be acceptable as the 0 point on the scale fell within the focus area, however it may have fell far to the back or front which in your picture above could really matter.


I always had trouble manual focusing lenses with the 5D and 7D because it was hard to see the subject, the 1D IV I have had better luck.


Good Luck, I know I didn't give you a solution to your question but maybe it gives you an idea at least of what I would expect to see. I couldn't imagine the confirmation light out performing an AF lens.


Rick
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