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clandon@apamce.com
USA
26 Posts |
 Posted - May 01 2015 : 18:35:41
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Hi,
How do I retrieve the Lens Manufacturer, Image Pixels (H & V), and Image Color Depth from the EXIF data. I have tried EXIF_Pixels, EXIF_PixelXDimension, EXIF_BitsPerSample, EXIF_LensMake, and many more. I had no trouble adding ISO. I am modifying the EXIF Editor demo, trying to add the missing parameters. |
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xequte
38514 Posts |
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clandon@apamce.com
USA
26 Posts |
Posted - May 02 2015 : 02:14:07
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| These images are rather large, about 66 MB each. Tomorrow I will find one that includes lens data. I think Adobe Bridge is one of the programs that displays the lens manufacturer. I will try to reduce the size of an image so I can send it by e-mail, first making sure the lens data is still there. |
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clandon@apamce.com
USA
26 Posts |
Posted - May 02 2015 : 13:07:28
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Here is an image, This does have EXIF lens data.
HOW DO I ATTACH AN IMAGE ? I don't see anything to do it. |
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w2m
USA
1990 Posts |
Posted - May 02 2015 : 13:29:50
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Select the Reply button and then a link to attach a photo or zip is located under the text box.
Bill Miller
Adirondack Software & Graphics
Email: w2m@hughes.net
EBook: http://www.imageen.com/ebook/
Custom Commercial ImageEn Development |
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clandon@apamce.com
USA
26 Posts |
Posted - May 02 2015 : 13:51:25
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that seemed odd because more stuff was exposed this time but not last.
A place that says "attach photo or zip" that wasn't there before. Anyway, here is an image with lens data. |
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w2m
USA
1990 Posts |
Posted - May 02 2015 : 13:53:02
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Unfortunately the @ in your username breaks the attachment. You need to encode the @ as %40
Bill Miller
Adirondack Software & Graphics
Email: w2m@hughes.net
EBook: http://www.imageen.com/ebook/
Custom Commercial ImageEn Development |
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clandon@apamce.com
USA
26 Posts |
Posted - May 02 2015 : 13:57:30
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I guess the difference was that I hit reply to topic instead of simply typing in the quick reply window and then hitting post.
Here is another picture, this time a screen capture showing the image data for this image as shown by Adobe Bridge. I can only show part of what is there at a time. I think the other program that also shows lens data is Corel Paint Shop Pro, but I can't verify that now.
Here is a revised list of the things I want to be able to access from the exif info, that I don't yet know how to.
Image Color Depth
Image Horizontal Pixels
Image Vertical Pixels
Lens Manufacturer
Lens Model
Lens Focal Length
Lens Maximum Aperture (Smallest f/Number) |
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clandon@apamce.com
USA
26 Posts |
Posted - May 02 2015 : 17:24:45
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Both images open in lightroom, and show in a windows directory as images in large icons. And the window opened showing download complete some time ago. |
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clandon@apamce.com
USA
26 Posts |
Posted - May 02 2015 : 17:45:08
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| The first image is 493 X 328 pixels. Perhaps that size is not supported. The image is only 65.5 kb. I simply reduced the image by 10 by removing the fourth decimal. The second image is 463 X 608, and 71.5 kb., simply an arbitrary size due to cropping. They both open in Paint. |
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clandon@apamce.com
USA
26 Posts |
Posted - May 02 2015 : 18:06:19
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| And they both load into my imageen exif demo modification I am working on. The second file has much less exif data. I just included it to show what the lens information in the first file looks like. |
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clandon@apamce.com
USA
26 Posts |
Posted - May 03 2015 : 11:16:37
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| I was just about to try uploading the images again. But I see them on the screen. So I think the upload finally took, overnight. |
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clandon@apamce.com
USA
26 Posts |
Posted - May 03 2015 : 14:13:11
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| Oops, I'm finding a few of the things I am needing are already there. These are Color Space is probably the same as color depth; EXIF Image Height and Width seem to be the pixels H & V, and I see the focal length. |
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clandon@apamce.com
USA
26 Posts |
Posted - May 03 2015 : 17:02:53
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I may have found maximum aperture.
FloatToStr(EXIF_MaxApertureValue)
The only problem so far is that a 1.2 lens shows as a 1
Right now I have pictures taken with only two different lenses, an f/2 and a f/1.2
the f/2 lens shows correctly. |
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clandon@apamce.com
USA
26 Posts |
Posted - May 03 2015 : 17:09:53
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| EXIF_LensMake and EXIF_LensModel do not seem to work. |
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clandon@apamce.com
USA
26 Posts |
Posted - May 03 2015 : 17:14:41
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| Actually, it is a 24mm f/2.8 that is showing as 1. So MaxApertureValue doesn't seem to be right. |
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Uwe
284 Posts |
Posted - May 03 2015 : 19:30:02
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Look at EXIF_ApertureValue in the help file. You'll have to round the APEX value accordingly.
-Uwe |
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xequte
38514 Posts |
Posted - May 03 2015 : 22:26:28
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Hi
Image Horizontal Pixels and Image Vertical Pixels will be EXIF_ExifImageWidth and EXIF_ExifImageHeight. I expect Image Color Depth is EXIF_ColorSpace in ImageEn (there is no color depth tag in the standard).
The following tags are not yet available in ImageEn:
Subject area
Subject location
Camera Owner Name
Body Serial Number
Lens Specification
Lens Make
Lens Model
Lens Serial Number
Gamma
And will be added in a coming version.
Nigel
Xequte Software
www.xequte.com
nigel@xequte.com
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xequte
38514 Posts |
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clandon@apamce.com
USA
26 Posts |
Posted - May 06 2015 : 03:08:46
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| Thank you very much for your help. I now have everything I really needed, but of course the lens manufacturer and model would be nice to add. Also, can you tell me about T-Stop. I know the T-Stop is in the lens description for the Zeiss lens. Are T-Stops found only in a lens model, or is there a field for it ? |
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xequte
38514 Posts |
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Topic |
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EXIF data
