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Message: <blockquote data-quote="grandpaw" data-source="post: 507801" data-attributes="member: 8635">This may not go along exactly with this thread but I think it is still relevant to beginners or people new to using longer lenses#1 the longer the lens the shorter the depth of field #2 The closer you are to your subject the less depth of field you will have#3 If you combine a long lens and a short distance the depth of field will be even smaller yet.#4 The longer the lens you use the larger numbered F stop you will need#5 The closer you are the larger number F stop you will need#6 The longer the focal length lens you shoot handheld  the higher shutter speed you will need#7 As a rule of thumb, you need at least as fast a shutter speed as the focal length or higher   Example 300mm shoot at 1/300 sec or higher on a crop sensor it is 1 1/2 times or 1/450 or higher. Higher the better#8 use a tripod when you can and you can use slower shutter speeds#9 Use image stabilization if your lens has it. VR, VC, IS or whatever your brand of lens calls it.#10 Turn off stabilization when using a tripod. Remember to turn it back on when not shooting on a tripodWhen I use my Tamron 150-600mm I will set the ISO to 500 on my crop sensor D7000 camera and at long distances use F6.3 to F8. At closer distances I use F8 or F9 to get enough depth of field and the shutter speed usually is fast enough to stop camera and subject movement.</blockquote>