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<blockquote data-quote="thoang77" data-source="post: 71220" data-attributes="member: 10086">The general rule of thumb for shutter speeds and focal lengths is 1/focal length, give or take a little bit depending on what you're shooting and how stable you are able to keep your camera.&nbsp; VR allows you to get up to (advertised) 2-4 extra stops, which can be a considerable difference allowing you go go from say 1/125 to 1/30 with minimal blurring from camera shake (obviously it can't slow down action from moving).&nbsp; Shorter focal lengths are less prone to showing blurriness due to camera shake, but having a 55-200mm lens vs a 70-300mm lens makes no difference if you're shooting at 135mm.Also consider that the D90 has a crop factor of 1.5x (smaller field of view compared to a full-frame camera such as the D800 or d4 and the 35mm standard), so your focal lengths are technically a 105-450mm (consider this on the 50mm as well, some find it a bit too long for any indoor shooting, maybe take a look at the 35mm 1.8g?), so when you're shooting at 300mm on the non-VR, you probably would need to shoot 1/500 to get sharp shots, which would require a whole lot of light at f/5.6.</blockquote>

[QUOTE="thoang77, post: 71220, member: 10086"] The general rule of thumb for shutter speeds and focal lengths is 1/focal length, give or take a little bit depending on what you're shooting and how stable you are able to keep your camera. VR allows you to get up to (advertised) 2-4 extra stops, which can be a considerable difference allowing you go go from say 1/125 to 1/30 with minimal blurring from camera shake (obviously it can't slow down action from moving). Shorter focal lengths are less prone to showing blurriness due to camera shake, but having a 55-200mm lens vs a 70-300mm lens makes no difference if you're shooting at 135mm. Also consider that the D90 has a crop factor of 1.5x (smaller field of view compared to a full-frame camera such as the D800 or d4 and the 35mm standard), so your focal lengths are technically a 105-450mm (consider this on the 50mm as well, some find it a bit too long for any indoor shooting, maybe take a look at the 35mm 1.8g?), so when you're shooting at 300mm on the non-VR, you probably would need to shoot 1/500 to get sharp shots, which would require a whole lot of light at f/5.6. [/QUOTE]

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