Focal length database ????

W

whiteflyer

Guest
Is there any software out there that will scan through all my images and give me some sort of list/chart/graph of the focal lengths I use.

I'm looking to get a new lens and would like to check how often I shoot from 17 to 24 mm and from 70mm upwards, but I don't want to manual check every image myself.

Oh I'm using Canon in RAW
 
ooo good question - will be interesting to see if anyone knows of anything :)
 
If you use a Mac or Linux and have exiftool installed then I have a very slow BASH script that will count the number of shots taken at each focal length and give a rough percentage.

Strange thing is I never had one before reading this thread. Hmm. Anyway it produces a list like the following:

Scanning /Volumes/PHOTOS_IN...
Collating 5871 files...
.0mm : 1 (0%)
10.0mm : 164 (2%)
11.0mm : 7 (0%)
12.0mm : 16 (0%)
13.0mm : 2 (0%)
14.0mm : 18 (0%)
15.0mm : 1 (0%)
16.0mm : 7 (0%)
17.0mm : 792 (13%)
19.0mm : 93 (1%)
20.0mm : 74 (1%)
21.0mm : 39 (0%)
23.0mm : 102 (1%)
25.0mm : 85 (1%)
Click to expand...

A bit worrying that one of my files has a 0.0mm focal length in the EXIF. Weird.

To use it though, just download the script, run it with the directory containing your photos as a parameter (or root if you want it to scan everywhere), then wait a real long time while it works everything out. It only checks Canon CR2 or CRW files.

Michael.
 
Adobe Lightroom let's you do this. Once you've imported all you pictures you go to find and then it's in a drop down menu

Panzer
 
Now you've mentioned Lightroom I think you can so the same sort of thing in Adobe Bridge CS3
 
Yup I believe you can, Lightroom and Bridge :)
 
I've made a little graph of focal lengths since I got my camera last July

focal-graph.jpg
 
Marcel said:
Yup I believe you can, Lightroom and Bridge :)
Click to expand...

Lightroom will only break it down as far as what lens was used, it doesn't give you the exact focal lengths like mentioned in mij's post.

Blackvault
 
The Canon Zoombrowser software will export EXIF information from selected RAW files to a text file. You select the images, then choose File, Export, Export Shooting Properties.

It's a bit of a fiddle, but I can then analyse the text file in Excel to come up with a list of focal lengths.

Here's the result of my most recent shooting:

15-24 mm 70
25-34 mm 23
35-44 mm 37
45-54 mm 45
55-64 mm 7
65-74 mm 5
75-84 mm 3
85-94 mm 1
95-104 mm 0
105-114 mm 1
115-124 mm 1
125-134 mm 1
135-144 mm 36

I have 15-30mm, 50mm and 35-135mm lenses. It's clear that my 35-135 tends to get used at one extreme or the other...

Ian
 
iriches said:
I have 15-30mm, 50mm and 35-135mm lenses. It's clear that my 35-135 tends to get used at one extreme or the other...
Click to expand...

Apparently I am the same with my 17-70mm lens, nearly 40% of my shots are at one of those two extremes. I even modified my script to group by lenses so I could confirm the 70mm ones were with this lens rather than a 70-200/300mm.

Not something I have thought about before but it is interesting to see how I use my lenses. Was wondering whether to get a 55-200mm as a light cheap telephoto I could carry around in the bottom of a bag, and it seems I would probably make more use of it than the 70-300mm.

Michael.
 
If you save your images in jpeg then I have found just the thing ExposurePlot It will give you a graph of focal length use (real or 35 mm equivalent), ISO, aperture and shutter speeds. You can also see the results in times used or as a percentage.

Untitled-1.jpg
 
whiteflyer said:
If you save your images in jpeg then I have found just the thing ExposurePlot It will give you a graph of focal length use (real or 35 mm equivalent), ISO, aperture and shutter speeds. You can also see the results in times used or as a percentage.

What a super little program! Thanks Whiteflyer :clap:
Click to expand...
 
This is a very interesting site.
I have bookmarked it for future use.
Thanks whiteflyer (y)
:canon:
 
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