NEED HELP ON SLR: Is it possible for a half frame SLR camera (dx) to accommodate a lens of 150-600mm?

Firstly, consumer DSLR s are not half frame , they're crop sensors (APS-C).

1. Yes, a >300mm lens can be fitted to a Dx body, as long as the mount is correct for the camera make, eg Nikon uses the Nikon F mount.

2. Yes & No. Canon Dx lenses do NOT fit Fx bodies (they are a different lens mount). Nikon Dx lenses CAN be used on a Fx body (& vice versa).

3. Yes a 300mm lens is ok for bird photography, but of course it depends on the distance you are shooting. Personally, I use a Sigma 150-500mm lens - other friends use a 70-300mm lens.

Yes you can fit full frame lenses to crop factor sensors. You will have 1.6 crop for the frame. The important thing the bayonets must be the same as the mount. I.E you can use Canon EF 24-105mm f/4l IS USM on crop factor Canons as long as they have EF mounts(which they do). And 300mm lens is a bit risky without a tripod since you can get motion blur easily. But if you use shutter speeds higher than 1/250 you will be fine. Ergonomy is another thing tho. You need to try and feel it.

The focal length has nothing to do with it. It is all about the mount. If you have the proper mount for your camera on the 150-600mm lens, it will mount.

The 300mm on a DX camera is the same angle of view as a 450mm on an FX camera, so, yes, it is good for bird photograph (amateur or professional).

Bird Photography, unless skilled at using a hide, needs a fast telephoto lens plus teleconverter and a heavy tripod. Sigma 150-600mm is popular

If you have a Sony Alpha SLT camera you can also use the Sony/Minolta f8 500mm mirror lens, this was the only one that had autofocus. You can find them around $400.

Sensible advice here:

http://www.bhphotovideo.com/explora/photography/ti...

DX is cropped-sensor and is much smaller than half-frame.

If you have a DX camera, you can use DX and FX lenses. If you have an FX camera, you can only use FX lenses with it. Bear in mind that you still have to stick to the mount-system your camera has.

For birding, 300mm is the minimum. You will want longer.

"DX" is called "crop-frame" or "APS-C" - it is rather more than half of the "full frame" in area. The designation "half frame" was used in the days of photography on film, but "half frame" cameras never really caught on after a brief moment of enthusiasm in the mid 1960s.

Of course you can use a lens of 150mm to 600mm on full frame or on crop-frame. The tele effect on crop-frame is greater than on full frame. Always buy a lens usable directly on your current camera body, since the use of adaptors is unsatisfactory, may not give full functionality, may lose light power, and may damage lens or camera body.

The lens for a professional or an amateur to use for bird photography depends on the type of bird and on how close you can reasonably approach the bird without scaring it. 300mm on crop frame will get you close enough to many birds.

The limitation with lenses used on the opposite type of body is mainly on the wide-angle end - say numbers shorter than about 60mm. Basically you cannot use DX lenses on full-frame because the lenses do not cover full frame, thus you will get bleed-off at the edges, and using wide-angles for full frame on DX will not show such wide angle for the same focal length.

1. Yes, if it is available.

2. FX lenses may fit on DX bodies.

3. Yes.

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Please don't buy an SLR until you can answer this for yourself.