Sony FE 100-400mm f/4.5-5.6 GM OSS Lens

While this lens is popular among nature and sports shooters, it can do very well for those shooting portraits from a greater distance from the lower end of the zoom range.

I assume it does, because the foot is supplied with the lens, not as an optional accessory, and the ring to which it attaches is not removable.

No, the in body stabilization on cameras is best left on when using the stabilization on the Sony FE 100-400mm f/4.5-5.6 GM OSS Lens. These 2 forms of stabilization work together for superior performance.

This is a superb lens and we would expect equal performance on the Sony FS7.

Yes, I set the Shutter Speed at 1/2000th or faster, the ISO 1000 and the Aperture wide open for swans in flight. I am trying to find out is Sharpness not Blur at 100% zoom on the Sony Viewer sw. Another thing I noticed is the landscape photo looks grainy at 100% zoom but looks good at 50% zoom. I think this is the inherent characteristics of the CMOS sensors (CCD, CMOS). I thought the BSICMOS got better but it is not to the degree I expected. Thank you.

You need to screw the plate that came with your tripod onto the lens collar and then you can place the lens on the tripod. Without the plate it will not be possible to place the lens on the tripod head.

Yes. With standard digital zoom, pictures captured by the image sensor of the camera are enlarged using digital signal processing. Therefore, as the magnification level increases, signals to be estimated also increase and can reduce the image quality. When using Clear Image Zoom , however, zoomed images are captured close to the original quality when shooting a still picture. The camera first zooms to the maximum optical magnification, then uses Clear Image Zoom technology to enlarge the image an additional 2x, producing sharp clear images despite the increased zoom ratio. The Smart Zoom™ feature allows images to be zoomed without losing picture quality. The central part of the picture is trimmed and enlarged without image processing.

I am also an armature photog. It really depends on what you are shooting. I sometimes find 200mm is not long enough. However depending on the camera and subject, I am able to blow up the image with no loss of quality.