Can someone explain what is continuous aperture? Why wide angle cameras can't have continuous aperture?
I assume you mean constant aperture? This means the widest f-stop is the same at the longest focal length as it is at the widest focal length of a zoom. The f-stop is, in simple terms, the focal length divided by the physical aperture diameter. So a larger aperture is needed at the long end in order to achieve the same f-stop. Lenses with constant apertures are naturally more difficult, and thus expensive, to build. Pro 28mm wide angle compact camera??? - Digital Camera Forums ::
7 posts - 3 authors - Last post: Jul 13, 2008Pro 28mm wide angle compact camera??? What Camera Should I Buy? The only camera I can find that meets these specs is the Leica d-lux
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Wide Angle Lens For Olympus 4/3 Cameras::
Wide Angle Lens For Olympus 4/3 Cameras. This is his second article, but you can also check out his latest website on Jansports Big Student Backpack at
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Most new wide angle lenses to have continuous apertures.
My Nikon 12-24 mm f.4 is f/4 from 12 to 24, same with my Nikon 14-24 mm f/2.8; f/2.8 from 14 to 24 mm
Horseman SW-D Pro Super Wide Angle Camera | PhotographyBLOG::
Super wide angle lenses were not commonly usable with digital camera backs in Horseman SW series (originally for film cameras) lenses can also be used.
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ModSynergy.com - Review 211 - Samsung WB550 Wide-Angle Digital ::
Samsung's WB550 compact digital camera is the first to combine a 24 mm ultra wide angle lens with a 10x optical zoom. So you can fit more in every frame,
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More detail on the 14-24 mm lens
http://www.nikonusa.com/Find-Your-Nikon/...
Which lenses are you talking about?
A "constant aperture" lens is a zoom lens with an f-stop (aperture) that does not change as you zoom from one zoom length to another. The Canon 70-200mm f2.8L is one example. The aperture remains at f2.8 from 70mm to 200mm.
If you look at the aforementioned lens you'll see its quite large. Its also an expensive lens - about $1,600.00. Since you could buy several point & shoot cameras for the cost of this one lens its obvious that simple economics - as well as size - make a constant aperture point & shoot zoom lens an impossibility.
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Why wide angle cameras can't have continuous aperture?