1. Allows you to capture a variety of scenes without having to contort into highly uncomfortable positions, or lay on the ground. How many times were you forced to have to lay down on the ground so you could look forward and see what you were shooting at ground level (whether of a baby, pet, etc.)? With an articulating LCD, you just hold the camera down low - flip the LCD out and point it upwards towards you, and wallaaaaaaa....the scene is captured.
2. Is absolutely superb for MACRO scenarios - again, without having to contort into awkward positions.
3. Allows you to take photos either by raising the camera high over your head (such as when you're in a crowd) to view an event going on in front of you (one that you'd miss getting because of the crowds in front of you). You just simply hold the camera up high - tilting the LCD screen out and downards so you can just look up and see the entire scene in front of you.
4. Allows you to take photos of yourself, or of you in a group and get instantaneous feedback on composition, etc. Good for porn shots of you and your...well, whoever - if that's what turns you on
5. Allows so much more flexibility in a wide variety of areas - some of which you will discover as you come across them.
6. And finally, if you never even use the articulating feature, you can keep the LCD pointing outwards flush against the camera (as if it were a fixed LCD to begin with) - so nothing is lost.
Once you have this feature - especially on a really good camera - you tend not to want to give it up after having used it.
It used to be standard on digicams across the board years ago but has since gone through a transition where mostly fixed LCD's can be found on digicams now-a-days. It appears as though the manufacturers have learned and are slowly coming back to incorporating more articulating sensors (well, at least on their better models).
Olympus was wise to begin putting this on their DSLR line, especially when you now have live view (live view with an articulating LCD is invaluable, to say the least). Glad to see Nikon do it with the D5000, although it is unusual how they did it on there - hinged at the bottom and moving up and down - how strange, but you get used to it. Would love to see Canon begin incorporating articulating LCD's on some of their DSLR's - not all, but some at least.
Enough said...
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