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    Question on lens

    Hi, I have a EF-S55-250mm f4-5.6 IS Does the "f4-5.6" refer to the aperture? Does this mean that when I am using the lens, I must set the camera's apperture to within the f4-5.6 range? What happens if I set the camera's aperture outside the range? Thanks in advance
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    Free tripod

    When i bought my 450D, the shop gave me a free tripod "Stein Z Eiser MOD:SZ-02". After reading some of the posts in this forum, I understand that a inferior tripod may topple when the wind blows and damage the camera. Can anyone advice if the tripod I was given is of a decent quality, or...
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    Printing pictures - send in RAW or JPEG?

    Hi everyone, I have another stupid question. My shots are saved in the camera as RAW and JPG. After editing, if I want to send my pictures for printing, is it better to print from the RAW file (is this possible?) or the JPG file? Thanks in advance.
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    Question on Cannon 450D Manual Focus

    I have a short (and dumb) question which I hope someone can help me with. I am using a Cannon 450D. When I use Auto Focus, I need to press the shooting button halfway to activate the auto focus. The camera will then display all the Apperture / Shutter Speed / ISO settings while the camera is...