What is the purpose of the UV or Skylight filter?
It has two purposes:
1. It cuts out ultraviolet light which means you get much clearer pictures (less haze) especialy in sunny conditions in coastal areas, at sea or in the mountains.
2. It protects the lens from dirt, scratches and other damage. The filter glass is harder than the lens and also it is not expensive to replace if it should get damaged.
How does the close up lens attachment "Olympus Attachment Lens f=30cm" work?
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This attachment lens can be a bit tricky to use but it is capable of exceptional results so it's well worth the effort. The difficulty is that you can't use the viewfinder to frame the picture or to focus. This, along with the inevitable shallow depth of field makes it difficult to get the focusing spot on.
I have one and found it best for things like flower heads rather than insects, where at least some of the subject will be in focus. I have had some wonderful pictures of butterflies on flowers but it is necessary to take a lot of shots to increase your chances of getting a really good one.
The best way to use it is with the camera on a tripod and then to use a piece of string at 30cm long to measure the distance from the lens to the subject.
The metering is not affected by the lens, so there's no need to adjust the aperure setting - just leave it set to "A".
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