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Focal length info for not chipped lenses

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stiuskr View Drop Down
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Post Options Post Options   Quote stiuskr Quote  Post ReplyReply Direct Link To This Post Topic: Focal length info for not chipped lenses
    Posted: 27 January 2020 at 11:56
Or, before you swap lenses take a picture of that lens.
Rob Suits Jr.
a99M2 a99 a77 a700 KM7D|Min24/2.8 Min35/2 So50/1.4 So50/2.8 Min85/1.4G Tam90/2.8 Tam180/3.5|Tam17-50 CZ24-70G2 KM28-75D So70-200G1 So70-300G So70-400G1| SonyF60 AD200R2
 



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Cucoo View Drop Down
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Post Options Post Options   Quote Cucoo Quote  Post ReplyReply Direct Link To This Post Posted: 26 January 2020 at 20:24
Best solution I've found is:

- take note of the date/time when you mount a manual lens (e.g. take a picture with your phone, as long as the camera's time is set correctly the timestamps should match up)

- copy files from SD to your PC

- using ExifToolGUI, locate the files and compare timestamps to your "notes" of when each manual lens was mounted and un-mounted

- batch edit the relevant files by editing the lensmodel, focal length and - if you care to remember for every shot - aperture info tags

I've grown quite used to this workflow and do this before importing files into darktable. If using Lightroom you can skip the external editing and use an apparently free plugin called Lenstagger instead.

The only important step is to record the time of when a new lens is mounted.
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QuietOC View Drop Down
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 20 November 2019 at 11:36
Originally posted by rovhazman rovhazman wrote:

I wonder if there is a way to extract the focal length that I manually dial in my a7rii for the stabilization?
I am now 2 days away with several manual focus lenses. Whenever I change lens I dial in the focal length and it would be great to know what lens was used for each photo...

As far as I know the manually input Steady Shot focal lengths are not available.

I've heard the Lens Compensation app can be used the add a lens name to the EXIF. I've not tried it, but it is available for the A7RII.

"The following lens information can be written to Exif data even from lenses that do not ordinarily allow it
・Lens model: LensModel
・Focal length: FocalLength, FocalLengthIn35mmFilm
・F-number: FNumber"

Edited by QuietOC - 20 November 2019 at 11:39
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rovhazman View Drop Down
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Post Options Post Options   Quote rovhazman Quote  Post ReplyReply Direct Link To This Post Posted: 20 November 2019 at 08:02
I wonder if there is a way to extract the focal length that I manually dial in my a7rii for the stabilization?
I am now 2 days away with several manual focus lenses. Whenever I change lens I dial in the focal length and it would be great to know what lens was used for each photo...
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