Upload & Sell: On
May I make a suggestion..
In case anyone happens to do this test again, with a little extra effort, it is possible to record the individual file sizes of the images recorded on each card. Just imagine if you have an Excel spreadsheet with the filenames and file sizes for the individual files on each card in separate sheets in the spreadsheet. You could find out the minimum file size, maximum file size, average size, average bytes/MB per written to a card per second etc. You could find out the standard deviation of file sizes for the different cards and compare. Of course, this will not change the test results. But this will provide more visibility and granularity into the test results. This may also help to alleviate any concern due to differences in file sizes. Besides, it will serve as documentation of the test results to support the conclusions.
Here is an example of how you can do this without much effort.
1. Create a batch program to redirect the file information to a text file. For example, on my Windows 7 machine, I have my CF cord in my G: drive. The card has images in the folder “G:\DCIM\100EOS5D”, and I want the file size information in a text file named “filelist.txt” in my “My Documents” folder. The full path for my My Documents folder is “C:\Users\Photographer\Documents”.
I open Notepad and type the following
dir G:\DCIM\100EOS5D > C:\Users\Photographer\Documents\filelist.txt
I saved it onto my desktop with a file extension of “.bat” (remember old DOS days?). The file name I chose is “photos.bat” and it is on my desktop.
2. After testing the first card in the camera, insert the card in the drive (in my case G:drive), click on the “photos.bat” icon on the desktop.
3. Go to My Documents folder and you will find a text file called “filelist.txt”. Open it in Notepad, copy the columnar information containing, filenames, date/time of creation, and file sizes and paste into a new sheet in an Excel spreadsheet (ignore the unwanted information). Highlight the pasted text in the spreadsheet, go to the Data menu, and using the Text to Columns feature, convert the data into columnar format. Rename that sheet with the name of the card you just tested.
4. Repeat steps 2 and 3 for other cards. Remember the filelist.txt will be overwritten each time you click the batch file.
Just a suggestion.