August 23, 2003
Photography Exposure Tips
The first and best of all photography exposure tips is to understand what an ISO film speed number means. The ISO standard was created to rate the speed of different film emulsions. It is now being used to set the sensitivity levels on higher end digital cameras.
Why do the speed numbers seem to increase in odd increments?
While this appears strange, it really is very logical. Each step represents an increase in speed that is equivalent to 1/3rd of a camera exposure stop. A change of 1/3 of a stop in camera exposure is generally considered to be the smallest, noticeable change in exposure.
Posted by Don Tracy at 08:39 PM | Comments (0)
August 08, 2003
Digital Workflow Infrastructure
If you’ve been working for years in photography, you’ve undoubtedly amassed mountains of negative strips and transparencies. You’ve probably also established a reliable filing system. It is reassuring to see row after row of boxes and binders, each containing images that have been carefully filed and indexed.
Archiving digital images requires a completely different mindset. You need to build a digital workflow infrastructure.
Digital images differ importantly from analogue images such as film negatives. Negatives tend to degrade slowly over the years, perhaps picking up damage when they are in use...
Digital images do not generally show this gradual decline. Any loss tends to be immediate and catastrophic... You need to plan your digital storage to take account of this difference.
Posted by Don Tracy at 02:20 PM | Comments (0)