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Range of point of focus


ARI 17 562 United Kingdom
4 Jul 2020 4:04PM
I have an unusual question. Unseeing an EOS 5DsR, and am pretty happy with it. It replaced a 5D classic. A challenging body but I am a convert. As I received the new camera a couple of days before holiday, I did not have time to go through the manual and only scanned the quick ref guide. I put the camera on 'P' mode. The new body was used with a long tele lens. On reviewing the pictures taken, there are instances where I could have bettered the depth of field. Lots of info embedded in the file but could not see info on the range of the point of focus to use with a dob table. Focusing is sophisticated and includes spot focusing, hence I think that the focusing distance is there, but how do I access it.
Thanks

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sherlob Plus
14 3.1k 129 United Kingdom
4 Jul 2020 4:49PM
Iím not sure that you can. It will show which focus point was selected, but I donít think it will give the range.
LenShepherd 12 4.2k United Kingdom
4 Jul 2020 5:30PM

Quote:Iím not sure that you can. It will show which focus point was selected, but I donít think it will give the range.

If it works like Nikon the focus distance used is recorded - but not viewable in Nikon software.
It is possible to find software which records all data recorded - though there may be lots more recorded than the focus distance.
Caution is needed as the focus distance is likely "near enough" computer generated rather than precise.
While I no longer subscribe to flickr a focus distance was included among about 80 other items if you selected the option to read full EXIF for a picture on flicker.
Dave_Canon Plus
14 1.8k United Kingdom
4 Jul 2020 8:10PM
Lightroom displays the focusing distance from the EXIF data for my cameras.
Philh04 Plus
14 2.2k United Kingdom
4 Jul 2020 8:39PM
Not all Canon camera/lens combos (Early Canon lenses and I believe, third party lenses do not provide that information) will record the focus distance in the EXIF... reviewing the DoF against aperture etc. after the fact may help in future instances as a rough reference giving you some idea as to what is possible
Dave_Canon Plus
14 1.8k United Kingdom
4 Jul 2020 8:55PM

Quote:Not all Canon camera/lens combos (Early Canon lenses and I believe, third party lenses do not provide that information) will record the focus distance in the EXIF... reviewing the DoF against aperture etc. after the fact may help in future instances as a rough reference giving you some idea as to what is possible


Good point. My lenses are all Canon.

Dave
ARI 17 562 United Kingdom
5 Jul 2020 12:43AM
All lens being used are Canon on EOS 7D Mk1, EOS 5D mk1 (not used anymore) and now 5 DsR. Software is Canon DPP v4.
I also use lock focus and recompose as I find that I am quicker this way compared to moving the focus point to where need to put it for the composition. It would be handy to know the range of the point of focus.
Philh04 Plus
14 2.2k United Kingdom
5 Jul 2020 7:24AM
As I said not all Canon lenses report the focus distance, it is believed that this ability came about with the introduction of ETTL-II (although I don't think any one really knows apart from Canon themselves) it is also reported that Canons DPP doesn't parse that part of the recorded EXIF, also that the information is inaccurate.

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