First off, normally my customers recieve CDs or DVDs of their event. I am a strong believer in allowing the customer to purchase CD or DVD instead of charging by photo, but that is another story for another day. What is important is that you get to choose if you want either CDs or DVDs. I used to only offer DVD's but their are some cons to that. If you wanted to take your DVD to Wal-Greens or Wal-Mart, or wherever they may have a printing kiosk a lot of them don't have anything to read the DVD media. CD's on the other hand work fine, but you will normally have many CD's for a wedding.
What should I do BEFORE I get my DVD/CDs. I recommend you download Google photo application called Picasa here:
http://picasa.google.com/. Picasa is great for viewing and organizing lots of photos quickly.
What you should do when you get your DVD/CDs? First thing to do is import them to your hard drive. This is by far the best thing to do. The photos may be slow to appear on your computer screen if you are trying to view them directly from the DVD/CDs since they are high resolution files. For instance, each full resolution photo usually has more data on it than a 4 minute mp3 music file! I also include a small resolution version of each photo, in a seperate folder within the DVD/CDs so you can view, email, upload to the web faster
.
What is the difference between high resolution and low resolution? Size.
The resolution of a digital photo is expressed by pixels (width x height). A full resolution photos will vary depending on numerous factors such as the megapixels of the camera, or if the photo has been cropped. An uncropped photo from my Nikon D300 is 4288 x 2848 pixels. If you multiply those together guess what you get. 12.2 million....which is 12.2 megapixels. A low resolution version of the same photo could be anything smaller than that, but the point is to make it a smaller FILE SIZE so it can be viewed faster, emailed faster, downloaded faster, ect. I usually make my low resolution photos about 1000 pixels at the long end. So if it is uncropped or I have kept the same aspect ratio the file will be 1000 x 664. This is plenty big to view on a computer. Let's look at a comparison. Here a
low resolution photo. And here is the
high resolution version. Now while you may think the low res version is plenty big enough to print, it is....but it isn't. Really it all depends on what size you want.
The resolution of a print is expressed in pixels per inch (PPI). When printing a standard 4x6 print you want 300 PPI. Lower PPI equals lower print quality (however this is debatable as you may not actually see much difference between 200 PPI and 300 PPI). So is the low res version good enough to print a 4x6 photo at 300 PPI? Lets do the math.
4 inches x 300 ppi= 1200.
6 inches x 300 ppi= 1800.
So we need a digital photo 1200 x 1800 pixels to print a 4x6 photo at 300 PPI. The low res version doesn't quite cut it for a high quality print.
To learn more about PPI, DPI (often interchangable with PPI), print size requirements, megapixels, ect. check out
http://www.dgrin.com/showthread.php?t=177