Amazon.com: Sigma 70-300mm F/4-5.6 Dg Macro Telephoto Zoom Lens For Pentax And Samsung Slr Cameras: Camera & Photo Preview

Amazon.com: Sigma 70-300mm F/4-5.6 Dg Macro Telephoto Zoom Lens For Pentax And Samsung Slr Cameras: Camera & Photo Preview

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I bought this lens along with the Nikon D50 kit that included the 18-55mm lens.

It does Macro (200-300mm) down to about .95m (3 ft). It does tend to hunt for focus quite a bit using the camera's AF-A setting, but does not when in AF-S, however focus is lost quickly when hand-holding. In this situation I end up using an indoor studio with the camera on a tripod, so I set the focus manually anyway.

The Macro setting allows up to a 1:2 magnification at 300, and about 1:3 at 200mm. This is done by allowing closer focusing than the normal 1.5m (5 ft).

When using Macro, the lens is locked to 200-300mm, and you must focus to the normal range before you can flip the switch and zoom back to under 200mm. This can be a slight problem as the lens DOES NOT have a M/A focusing switch. You must go to manual focusing via the camera, focus to normal range, flip lens macro switch, then you can go back down below 200mm and/or re-engage your autofocus.

I have not had any major problems with this lens, and actually enjoy the pictures that I get from it during sports and other telephoto needed activities. It does need a steady hand at the extreme end during lower light levels because it does not have VR, but for what it is made for I have not had any trouble getting sharp pictures. Just don't use it in low light without a tripod.

Focusing is smooth in the normal mode from 1.5m (5 ft) to infinity and it just under 1/4 turn from lock to lock. (Macro is 1/2 turn)

Zooming is smooth from 70mm to about 200mm, and then bunches up (gets slightly harder to turn) from 200 to 300. It zooms back down smoothly the entire way. It is not internally focusing, so at minimum (70mm at infinity) it is about 5" out from the camera, and at maximum (300mm at 3 ft) it is about 8" long.

It has a manual aperture ring at the base, but for autofocus cameras it recommends leaving it locked at max (f/22). [Since it is a D-model lens, it is made for the DX-sized sensor which is smaller than 35mm, and will have vignetting on 35mm, but all DSLRs are autofocus so why they included this is confusing. Just leave it locked at f/22]

The filter ring is 58mm in size. Includes caps, and cylindrical hood that fits nicely, and stores backward on the lens covering the body during storage. Mine has a matte-black finish, but I've seen regular semi-gloss plastic as well.

If you are on a budget, and want to get into telephoto or Macro photography, this lens is great. It does take a bit to get used to, but for the price, I have been satisfied.
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Amazon.com: Sigma 70-300mm F/4-5.6 Dg Macro Telephoto Zoom Lens For Pentax And Samsung Slr Cameras: Camera & Photo Price

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Amazon.com: Sigma 70-300mm F/4-5.6 Dg Macro Telephoto Zoom Lens For Pentax And Samsung Slr Cameras: Camera & Photo Overview

Amazon.com: Sigma 70-300mm F/4-5.6 Dg Macro Telephoto Zoom Lens For Pentax And Samsung Slr Cameras: Camera & Photo Feature

Style: Pentax and Samsung SLR Cameras

• Optimized for use with digital SLR cameras
• Multi-layer lens coating and lens design reduces flare and ghosting
• Minimum focusing distance is 59 inches at all zoom settings
• Features 14 lens elements in 10 Groups. This lens has 5 pins.
• High-performance lens ideal for portraits, sports photography, nature photography

Amazon.com: Sigma 70-300mm F/4-5.6 Dg Macro Telephoto Zoom Lens For Pentax And Samsung Slr Cameras: Camera & Photo Detail

Style: Pentax and Samsung SLR Cameras

• Item Weight: 1.6 pounds
• Shipping Weight: 2 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B000B8T6E2
• Item model number: B000B8T6E2

Amazon.com: Sigma 70-300mm F/4-5.6 Dg Macro Telephoto Zoom Lens For Pentax And Samsung Slr Cameras: Camera & Photo Other Resource

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( Product search information : 8out of 10based on 24 ratings.5 user reviews. )

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