Wide aperture lenses let in more light, but when the lens is at its maximum focal length (aka its maximum zoom) then the maximum aperture will be a lot smaller (say f/5.6) compared to the maximum aperture aperture when the lens is at its minimum focal length (say f/2.8).

When you're zoomed in a lot you really need to have very short exposures to avoid blur caused from camera shake - in todays superzooms offering 20X+ zoom any small movement of your hand creates giant movements in the image. In order to ensure you can have short exposures you want to be able to shoot at as low an f-stop as possible.The learning topic on apertures explains why big apertures (the same as low f-stops) allow you to expose the image to more light.

Rule of thumb: The widest aperture at wideangle focal lengths > widest aperture at telephoto focal lengths

Superzooms with Big Apertures

The following superzooms have the widest apertures at full zoom

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Nikon Coolpix P1000
from $849
Zoom Great zoom Help
125x
Aperture Wide aperture Help
f/2.8
External mic jack External mic jack Help
Record higher quality audio with a microphone

Learn more about the Nikon Coolpix P1000

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Panasonic Lumix DC-FZ1000 II
from $898
Aperture Wide aperture Help
f/2.8
Screen resolution High resolution screen Help
1,240k dots
Light sensitivity High ISO Help
25,600 ISO

Learn more about the Panasonic Lumix DC-FZ1000 II

Green arrow See more of the top superzooms with wide apertures

Discussion

Showing 1 comments

Jay Bell (5:50 AM, April 03, 2013)
Maximum f at full telephoto is f2.8