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Forums > Back > Canon 6D successor will be a mirrorless full frame camera
#80
Quote:Stop showing off your superior knowledge and tell me why some lenses take that wrong final step with PD AF?
No, there is no use in that. We are discussing focus screens and the ability to judge focus with our eyes.. Besides, i do not know WHY some lenses take wrong final steps as I am not the designer of that lens, have not designed its electronics, logic, gears, sensors and algorithms. I just know that when it happens one needs to send in the lens for fixing/calibration, Or some lenses just do it without calibration being an option to help it, just crude AF implementation (some Tokinas come to mind).

 

Are you at least now clear on that the focus screen has no relation to back or front focussing but that front and back focussing occurs with AF, a result of the AF system (be it wrong size steps being taken or the AF sensor looking at a certain colour which does not focus at the same plane as the other colours) or MF relying on focus confirmation of the AF sensor with the latter collour focus issue?

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Messages In This Thread
Canon 6D successor will be a mirrorless full frame camera - by davidmanze - 12-21-2016, 08:44 AM
Canon 6D successor will be a mirrorless full frame camera - by davidmanze - 12-21-2016, 10:54 AM
Canon 6D successor will be a mirrorless full frame camera - by davidmanze - 12-21-2016, 11:02 PM
Canon 6D successor will be a mirrorless full frame camera - by davidmanze - 12-22-2016, 12:43 AM
Canon 6D successor will be a mirrorless full frame camera - by davidmanze - 12-22-2016, 09:04 AM
Canon 6D successor will be a mirrorless full frame camera - by davidmanze - 12-22-2016, 11:39 AM
Canon 6D successor will be a mirrorless full frame camera - by davidmanze - 12-23-2016, 07:59 AM
Canon 6D successor will be a mirrorless full frame camera - by Brightcolours - 12-31-2016, 09:04 AM
Canon 6D successor will be a mirrorless full frame camera - by davidmanze - 01-22-2017, 08:37 AM
Canon 6D successor will be a mirrorless full frame camera - by davidmanze - 01-24-2017, 03:23 AM
Canon 6D successor will be a mirrorless full frame camera - by davidmanze - 01-24-2017, 09:22 AM

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