Focal Length

[ItzBitzHair]

is there a way i can got back and look at photos i have already taken and see what the focal length was that the pix was shot at.

Thnx

[dmwierz]

If your lens communicates focal length to the camera, then it will be in your EXIF data. Here is the EXIF data from another POTN member's image he posted earlier today:


Exposure Time: 1/320 sec
F-Number: f/2.0
Exposure Program: Manual
ISO Speed Rating: 1600
Lens Aperture: f/2.0
Exposure Bias: 0 EV
Metering Mode: Pattern
Flash: No Flash, Compulsory
Focal Length: 85.00 mm
Color Space Information: sRGB

EIXF can be read with numerous stand alone programs, with Mac OS 10.4 and higher, with PhotoShop, etc...

[ItzBitzHair]

what about the canon software they give you for use with the camersa.

Thnx

[dmwierz]

You mean DPP? I dunno. I've never used it, but I'm sure something that is on the CD should be able to read the EXIF info.

I think Image Browser and DPP show basic EXIF info but maybe not focal length. On the Mac, the free app EXIF Viewer is GREAT and I use it all the time to give very complete EXIF info.

What OS are you using on your computer?

[ItzBitzHair]

You mean DPP? I dunno. I've never used it, but I'm sure something that is on the CD should be able to read the EXIF info.

What OS are you using on your computer?


i am in window's

i tried it it shows some and not others

i dont have adobe on this cp only paint shop pro. it will also show the info but not the histogram... i am trying to work with my photos exposure settings to get then right is why i want to see that info based on old photos i have taken

[dmwierz]

Hair,

If you're trying to work with your exposure settings, why are you concerned with focal length? Seems odd, as fl is rarely even a minor factor in determining exposure, unless you have a lens that changes aperture with focal length, but even then, it's the aperture that is impacting your exposure, not the focal length. If you shoot Av mode or manual, and set your aperture for the widest setting, even with a variable aperture lens, the aperture will be the largest it can be for whatever focal length you choose.

[ItzBitzHair]

just trying to understand it all actually.

[ItzBitzHair]

I am trying to work out the iso ss ape relation ship and trying to make my photos good. That is actually what I am doing.

I just got my 50mm lense and I am not happy with it.. its not changing my photo any...

[dmwierz]

I am trying to work out the iso ss ape relation ship and trying to make my photos good.

Suggest you invest in "Understanding Exposure" by Bryan Peterson:

http://www.amazon.com/Understanding-Exposure-Photographs-Digital-Updated/dp/0817463003/ref=pd_bbs_sr_1?ie=UTF8&s=books&qid=1204069553&sr=8-1

[ItzBitzHair]

k thnx

finally got your poscast. Nice I look forward to the next one.

but I have already learned a few new things from it.

I got my 50mm f/1.8 but it was not usful in my studio.

i hope to get good use tomorrow in the game if i go its a 2.5 hr drive so there may be some opposition in my going.


I got something else i am puzzeled about but i am trying to work it out also.. if I cant guess I will ask.

thnx so much again

[MT Stringer]

Downloadand install Opanda EXIF viewer. It's freeware and simple to use.
http://www.opanda.com/en/iexif/index.html
Mike

[ItzBitzHair]

thnx.. I use paint shop fro or dpp from canon.. it this better than that

[dmwierz]

thnx.. I use paint shop fro or dpp from canon.. it this better than that

You might want to reconsider, as I think Opanda will display more EXIF data than will at least DPP. I don't have PSP so I can't comment on this. Plus, Opanda offers browser-based EXIF reading, which is convenient, especially when looking at images online.

[ItzBitzHair]

ok say no more.

thnx

[bwolford]

Hair, how are you saving the files using DPP? I think you could be losing the embedded EXIF data in your images based on how you are saving them for display on the web. You won't lose the data with DPP if you export and save. You can also see the data in DPP by selecting a picture and then selecting FILE -> INFO.

Perhaps you are using Paintshop pro to save the JPGs for flickr OR there is a flickr option to hide the exif.... If you make sure you save the file with EXIF you won't have to cut and paste it so we can see it and help you.

[ItzBitzHair]

k thnx so much dear.. i will be out til monday Hospital Friday Game State Round 3 Sat Tenn vs UGA So I will be here and there when I can but I will make sure to do what you guys say

10x