BillA

I am trying to find a way to see the distance to subject using LightRoom Classic 13.2. I'll swear it used to be posted in the Exif data in the Library tab in the Exif panel on the right hand of the screen. Does anyone know what happened to that datum, or how I can get a reasonable value for this?

I would be happy to get an app for this if LR no longer provides this. I am running a iMac - Sonoma 13.2 and using a 4/3 Olympus with a 100-400 lens.

Any help would be much appreciated.

All the best and keep on shoot'n !
Bill A.

R.G. Loc: Scotland

You may well be right about Lr but what comes to mind is that it's very likely to be the sort of data that the proprietary software provides. In your case that would be Olympus Workspace. Perhaps that's what you're remembering.

Longshadow Loc: Audubon, PA, United States

Interesting.
I checked some of my shots and the Subject Distance is blank in all of the picture EXIF information.

BebuLamar

If indeed the camera supplies subject distance I would like to know and if my camera can do it.

R.G. Loc: Scotland

If

Subject = focus point

Then

Distance to focus point = distance to subject.

fantom Loc: Colorado

Sounds logical.

DirtFarmer Loc: Escaped from the NYC area, back to MA

EXIF tags: https://exiftool.org/TagNames/EXIF.html

Manglesphoto Loc: 70 miles south of St.Louis

I just checked exif data on a number of my images (Nikon) and I see no mention of distance to subject ,
If I need to know I use the range finder I use when shooting distant targets.
I'm pretty good a judging distance, but I do check from time to time.

DirtFarmer Loc: Escaped from the NYC area, back to MA

I took an old photo and ran it through a program I wrote to extract EXIF data. It only found one tag with the word 'distance' and it was SubjectDistanceRange and was zero. Tag (0x9206) was not found.

Don't have all my photos on this computer. Will try some more when I get home.

BebuLamar

I wonder which camera can record the focus distance?

Longshadow Loc: Audubon, PA, United States

If not, it's simply a text field where one can put what the Subject is.

(I'll go with the text field where one enters the name of the subject. )

profbowman Loc: Harrisonburg, VA, USA

I am not sure what is meant by the focal point by the original person who posted the equivalence,

Distance to focus point = distance to subject.

If one is meaning the focal point of a lens as defined by physics/optics, then the statement is incorrect. The focal point oof a lens is where parallel light rays from a distant source meet on the other side of a lens after they have passed through the lens. [See first diagram below.]

Stars are definitely far enough away to produce parallel rays of light when their light enters a camera lens. In the daytime, the Sun is also far enough away for a lens to form a focal point and burn one's skin. In fact, in college/university labs for physics courses, a light source 2 m away from a lens is assumed to produce parallel rays of l ight.

In the second diagram, a situation like that which is encountered in a camera where the object is out in front of the lens by some distance well in advance of the focal length of the lens with the image formed behind the lens (inside the camera on the sensor). The image is in focus when the light rays from all the points on the object interest at their respective positions on the sensor to form the image.

Note in the second diagram that the distance to the object (subject) and the distance to the image are all greater than the focal length of the lens. --Richard

(Download)

R.G. Loc: Scotland

As you noted in your quote, I used the expression "focus point" and not "focal point". I was referring to the point which the camera uses to achieve focus lock, which in turn refers to a surface, a detail or an edge within the viewed scene which the camera's AF system uses to achieve focus lock. In that way the focus point becomes the point of maximum sharpness.

I believe that is the commonly accepted meaning of "focus point" when referring to photos. Some proprietary software records the focus point that the camera used to achieve focus lock.

"Focal point" is the point of convergence (point F) as indicated in your first diagram.

Longshadow Loc: Audubon, PA, United States

Oie... For some reason I thought you were referring to the "Subject" field in the EXIF information......
Today is s different day, different interpretation. ("Subject Distance" field)

billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

What purpose would that information serve in improving the image.