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You didn't do much research if you can't find lenses for those brands.

For Sony, there are all of the Minolta Maxxum line, Sony's own lenses, and the Zeiss models. Plus Tamron and Sigma on top of those.

The only one on your list that could cause trouble is the Fuji, since they have pretty much got out of the DSLR business. To make it easy for you, the Fuji DSLR bodies used Nikon lenses.

Try this... go to B&H photo... http://www.bhphotovideo.com/

Find the lenses. On the left side is a window that allows you to specify the mount you want. Select Canon, for instance, and you will get about 12 pages of lenses for the EOS system. Same for Nikon (and Fuji, since they use the Nikon mount lenses). Fewer pages for Sony or Olympus, but still many to choose from.

the easy answer is that a lens, fixed is maximum suitable yet zoom normally extra effective, yet usually such lenses have a manner of employing a various aperture (F selection.) which lets you enhance your image be being extra waiting to chosen the place is the main mandatory section is by specializing in that factor that's the factor of transforming into the image. the wider the aperture the extra easy is permit in however the concentration is extra well-off and so is the place you seem at interior the image first ! desire i`m no longer giving too many secrets and techniques away yet a stable portrait normally is one the place a super aperture has been used for in spite of the certainty that the completed face won't be crystal sharp this would possibly not likely count number as long because of the fact the eyes are relatively sharp for its those `amazing` eyes that make a portrait. Peter

the easy answer is that a lens, fixed is nice yet zoom many times greater effective, yet in many situations such lenses have a fashion of using a diverse aperture (F type.) which permits you to develop your photograph be being greater waiting to chosen the place is the main necessary area is by using specializing in that ingredient that's the ingredient of turning out to be the photograph. the broader the aperture the greater gentle is permit in however the concentration is greater gentle and so is the place you look at interior the photograph first ! wish i`m not giving too many secrets and techniques away yet a sturdy portrait many times is one the place a great aperture has been used for even however the entire face won't be crystal sharp this does not relatively matter type as long by way of fact the eyes are relatively sharp for its those `bright` eyes that make a portrait. Peter

For Canon, the 28-200.

Here are the current Canon lenses (the creme colored ones or the ones with a red ring are the "L" series which are their professional series) http://www.usa.canon.com/cusa/consumer/products/ca...

i had heard more about Canon EF 70-300mm f/4-5.6 IS USM Lens which is good one.

*70-300mm telephoto zoom lens with f/4-5.6 maximum aperture for Canon EOS SLR cameras

*3-stop Image Stabilizer for reducing camera shake; ring-type ultra-sonic monitor (USM)

*Electro-magnetic diaphragm (EMD) helps create attractive background at large apertures

*Super Spectra lens coating and lens element shaping suppresses flare and ghosting

*Measures 3 inches in diameter and 5.6 inches long; weighs 22.2 ounces; 1-year warranty

http://www.amazon.com/Canon-70-300mm-4-5-6-Lens-Ca...

http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

!!!!!!!!!