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5DMKIII versus 7DMKII
#87
The story is quite simple: Although I adjusted AF for the Sigma 20/1.4 in front of a D810, the LiveView based contrast detection AF knows better in most cases or equally good and never (!) worse. There are about 3 shots where both kinds of AF came to the same conclusion. I didn't show all the samples. But I've seen enough.

 

It was highly unscientific - without any tripod and probably some blur came for shutter/mirror vibration. I count that as one reason more to abandon mirrors... all shots were done in about ½ hour, just by walking through the streets, take one picture with AF-C, move the AF-point to a suitable place and focus. Then I switched to LV, focused again and released. There's a note in the gallery which tells just what I said. The bicycle was trickier and here I enlarged the AF zone in LV and adjusted manually. The little jewelry tree was also tricky, I didn't see the branch in foreground in the viewfinder, but thought, I was focusing at the face plaquet under the rear branch. That was were I put the AF to in LV, again with manual adjustment. The wall painting with the soldier in a small creek, the light chains on the facia - hopeless to get that with PDAF.

 

In the gallery is only the first picture with PDAF. Plus a comparison of the AF zone at 100% crop. My conclusion: It's close to pointless in terms of getting the full resolution, the most possible information out of a picture if I (you or others may do better) can't rely on PDAF, adjusted as good as it gets with FoCal. Fast lenses = pricey lenses and in my case high resolving sensor, outresolved by the lens in theory. In real life crashed and smashed by a second best AF device. When I was adjusting the lenses, the spread of focus quality is visible in any FoCal protocol although the software triggers AF and shutter. If I go to check various focus points, I even see which one are weak.

 

As you said, dave, LV is a pain in terms of speed and of no use in street photography with a DSLR and I fully agree. Of course, DSLRs are not made for street photography with LV. Checking proper focus afterwards? Yes, why not. Unless I don't compare it with the potential of the LV versions, I was always fine with the results and thought, that's as good as it gets. True, for PDAF it is. But there's more in the lenses and I can't see it in most samples.

  


Messages In This Thread
5DMKIII versus 7DMKII - by toni-a - 12-16-2015, 07:28 AM
5DMKIII versus 7DMKII - by thxbb12 - 12-16-2015, 08:35 AM
5DMKIII versus 7DMKII - by davidmanze - 12-16-2015, 09:01 AM
5DMKIII versus 7DMKII - by joachim - 12-16-2015, 09:05 AM
5DMKIII versus 7DMKII - by Brightcolours - 12-16-2015, 09:07 AM
5DMKIII versus 7DMKII - by joachim - 12-16-2015, 09:49 AM
5DMKIII versus 7DMKII - by Klaus - 12-16-2015, 10:30 AM
5DMKIII versus 7DMKII - by JJ_SO - 12-16-2015, 11:29 AM
5DMKIII versus 7DMKII - by thxbb12 - 12-16-2015, 04:38 PM
5DMKIII versus 7DMKII - by Brightcolours - 12-16-2015, 08:26 PM
5DMKIII versus 7DMKII - by toni-a - 12-16-2015, 08:57 PM
5DMKIII versus 7DMKII - by Ayoh - 12-17-2015, 03:52 AM
5DMKIII versus 7DMKII - by JJ_SO - 12-17-2015, 07:23 AM
5DMKIII versus 7DMKII - by thxbb12 - 12-17-2015, 08:04 AM
5DMKIII versus 7DMKII - by davidmanze - 12-17-2015, 08:10 AM
5DMKIII versus 7DMKII - by JJ_SO - 12-17-2015, 08:41 AM
5DMKIII versus 7DMKII - by Brightcolours - 12-17-2015, 08:51 AM
5DMKIII versus 7DMKII - by davidmanze - 12-17-2015, 09:02 AM
5DMKIII versus 7DMKII - by JJ_SO - 12-17-2015, 09:12 AM
5DMKIII versus 7DMKII - by davidmanze - 12-17-2015, 09:17 AM
5DMKIII versus 7DMKII - by JJ_SO - 12-17-2015, 09:47 AM
5DMKIII versus 7DMKII - by thxbb12 - 12-17-2015, 09:54 AM
5DMKIII versus 7DMKII - by Brightcolours - 12-17-2015, 10:47 AM
5DMKIII versus 7DMKII - by JJ_SO - 12-17-2015, 11:38 AM
5DMKIII versus 7DMKII - by thxbb12 - 12-17-2015, 12:23 PM
5DMKIII versus 7DMKII - by joachim - 12-17-2015, 12:50 PM
5DMKIII versus 7DMKII - by Brightcolours - 12-17-2015, 01:35 PM
5DMKIII versus 7DMKII - by goran h - 12-17-2015, 01:53 PM
5DMKIII versus 7DMKII - by thxbb12 - 12-17-2015, 02:12 PM
5DMKIII versus 7DMKII - by Brightcolours - 12-17-2015, 02:59 PM
5DMKIII versus 7DMKII - by davidmanze - 12-17-2015, 03:02 PM
5DMKIII versus 7DMKII - by joachim - 12-17-2015, 07:01 PM
5DMKIII versus 7DMKII - by thxbb12 - 12-17-2015, 09:52 PM
5DMKIII versus 7DMKII - by Brightcolours - 12-17-2015, 10:34 PM
5DMKIII versus 7DMKII - by thxbb12 - 12-17-2015, 11:42 PM
5DMKIII versus 7DMKII - by davidmanze - 12-18-2015, 01:31 AM
5DMKIII versus 7DMKII - by Brightcolours - 12-18-2015, 07:08 AM
5DMKIII versus 7DMKII - by toni-a - 12-18-2015, 11:00 AM
5DMKIII versus 7DMKII - by davidmanze - 12-18-2015, 02:55 PM
5DMKIII versus 7DMKII - by toni-a - 12-18-2015, 05:27 PM
5DMKIII versus 7DMKII - by davidmanze - 12-18-2015, 08:46 PM
5DMKIII versus 7DMKII - by thxbb12 - 12-19-2015, 12:39 PM
5DMKIII versus 7DMKII - by Brightcolours - 12-19-2015, 12:48 PM
5DMKIII versus 7DMKII - by thxbb12 - 12-19-2015, 03:30 PM
5DMKIII versus 7DMKII - by davidmanze - 12-19-2015, 07:15 PM
5DMKIII versus 7DMKII - by thxbb12 - 12-19-2015, 07:43 PM
5DMKIII versus 7DMKII - by davidmanze - 12-19-2015, 09:51 PM
5DMKIII versus 7DMKII - by Brightcolours - 12-20-2015, 09:28 AM
5DMKIII versus 7DMKII - by JJ_SO - 12-20-2015, 01:36 PM
5DMKIII versus 7DMKII - by Brightcolours - 12-20-2015, 09:06 PM
5DMKIII versus 7DMKII - by Klaus - 12-20-2015, 10:20 PM
5DMKIII versus 7DMKII - by Klaus - 12-21-2015, 02:00 AM
5DMKIII versus 7DMKII - by Klaus - 12-21-2015, 02:37 AM
5DMKIII versus 7DMKII - by Guest - 12-21-2015, 08:03 AM
5DMKIII versus 7DMKII - by Brightcolours - 12-21-2015, 10:58 AM
5DMKIII versus 7DMKII - by davidmanze - 12-21-2015, 05:27 PM
5DMKIII versus 7DMKII - by JJ_SO - 12-21-2015, 05:36 PM
5DMKIII versus 7DMKII - by thxbb12 - 12-21-2015, 05:54 PM
5DMKIII versus 7DMKII - by davidmanze - 12-21-2015, 08:34 PM
5DMKIII versus 7DMKII - by Brightcolours - 12-21-2015, 11:08 PM
5DMKIII versus 7DMKII - by Ayoh - 12-22-2015, 12:12 AM
5DMKIII versus 7DMKII - by Brightcolours - 12-22-2015, 12:37 AM
5DMKIII versus 7DMKII - by JJ_SO - 12-22-2015, 11:57 PM
5DMKIII versus 7DMKII - by davidmanze - 12-23-2015, 08:02 AM
5DMKIII versus 7DMKII - by JJ_SO - 12-23-2015, 08:43 AM
5DMKIII versus 7DMKII - by Brightcolours - 12-23-2015, 11:35 AM
5DMKIII versus 7DMKII - by davidmanze - 12-23-2015, 07:57 PM
5DMKIII versus 7DMKII - by Brightcolours - 12-23-2015, 08:26 PM
5DMKIII versus 7DMKII - by JJ_SO - 12-24-2015, 12:26 AM
5DMKIII versus 7DMKII - by thxbb12 - 12-24-2015, 12:38 AM
5DMKIII versus 7DMKII - by Brightcolours - 12-24-2015, 06:55 AM
5DMKIII versus 7DMKII - by davidmanze - 12-24-2015, 11:34 AM
5DMKIII versus 7DMKII - by JJ_SO - 12-24-2015, 12:11 PM
5DMKIII versus 7DMKII - by davidmanze - 12-24-2015, 12:51 PM
5DMKIII versus 7DMKII - by JJ_SO - 12-24-2015, 01:09 PM
5DMKIII versus 7DMKII - by davidmanze - 12-24-2015, 01:36 PM
5DMKIII versus 7DMKII - by JJ_SO - 12-24-2015, 02:13 PM
5DMKIII versus 7DMKII - by davidmanze - 12-24-2015, 02:40 PM
5DMKIII versus 7DMKII - by davidmanze - 12-24-2015, 03:10 PM
5DMKIII versus 7DMKII - by JJ_SO - 12-24-2015, 04:08 PM
5DMKIII versus 7DMKII - by Brightcolours - 12-24-2015, 06:31 PM
5DMKIII versus 7DMKII - by davidmanze - 12-24-2015, 07:28 PM
5DMKIII versus 7DMKII - by davidmanze - 12-24-2015, 07:36 PM
5DMKIII versus 7DMKII - by Brightcolours - 12-24-2015, 08:22 PM
5DMKIII versus 7DMKII - by davidmanze - 12-24-2015, 08:43 PM
5DMKIII versus 7DMKII - by davidmanze - 12-24-2015, 08:50 PM
5DMKIII versus 7DMKII - by JJ_SO - 12-24-2015, 09:28 PM
5DMKIII versus 7DMKII - by davidmanze - 12-24-2015, 10:04 PM
5DMKIII versus 7DMKII - by JJ_SO - 12-24-2015, 10:46 PM
5DMKIII versus 7DMKII - by davidmanze - 12-24-2015, 11:31 PM
5DMKIII versus 7DMKII - by JJ_SO - 12-25-2015, 12:26 AM
5DMKIII versus 7DMKII - by Brightcolours - 12-25-2015, 01:45 AM
5DMKIII versus 7DMKII - by davidmanze - 12-25-2015, 06:59 AM
5DMKIII versus 7DMKII - by Brightcolours - 12-26-2015, 11:27 AM
5DMKIII versus 7DMKII - by Ayoh - 12-26-2015, 03:02 PM
5DMKIII versus 7DMKII - by davidmanze - 12-26-2015, 03:53 PM
5DMKIII versus 7DMKII - by JJ_SO - 12-26-2015, 04:16 PM
5DMKIII versus 7DMKII - by davidmanze - 12-26-2015, 07:12 PM
5DMKIII versus 7DMKII - by JJ_SO - 12-26-2015, 08:40 PM
5DMKIII versus 7DMKII - by davidmanze - 12-26-2015, 10:22 PM
5DMKIII versus 7DMKII - by JJ_SO - 12-26-2015, 10:54 PM
5DMKIII versus 7DMKII - by Brightcolours - 12-26-2015, 11:04 PM
5DMKIII versus 7DMKII - by Ayoh - 12-26-2015, 11:09 PM
5DMKIII versus 7DMKII - by JJ_SO - 12-27-2015, 12:55 AM
5DMKIII versus 7DMKII - by Ayoh - 12-27-2015, 01:04 AM
5DMKIII versus 7DMKII - by JJ_SO - 12-27-2015, 08:46 AM
5DMKIII versus 7DMKII - by Ayoh - 12-27-2015, 09:51 AM
5DMKIII versus 7DMKII - by JJ_SO - 12-27-2015, 09:59 AM
5DMKIII versus 7DMKII - by davidmanze - 12-31-2015, 09:48 AM
5DMKIII versus 7DMKII - by JJ_SO - 12-31-2015, 10:47 AM
5DMKIII versus 7DMKII - by JJ_SO - 12-31-2015, 02:39 PM

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