Sigma APO Teleconverter 1.4x EX DG for Nikon Digital SLR Cameras from Digital Camera Showroom

This product is a dedicated APO teleconverter that can be mounted between select lenses and the camera body to increase the focal length by the power of 1.4. It is compatible with the lens autofocus function, depending on the open-aperture F value of the lens being used, and it works with the AE (Automatic Exposure) function, dispensing with complicated exposure calculations. It also offers maximum photography magnification by 1.4x, without any variation in the minimum focusing distance. Compact and lightweight, this teleconverter converts your lenses into longer focal-length lenses, so you don't have to do a lot of unnecessary footwork.

Sigma APO Teleconverter 1.4x EX DG for ...- User Rating:
Summary for Sigma APO Teleconverter 1.4x EX DG for ...- Teleconverter
Notes on Sigma APO Teleconverter 1.4x EX DG for ...- Nice and easy to use, thin and affordable converter just take you're standard lens and add 1,4 to the f value and you got the number i.e 2,8 X 1,4 = 3,92 or f/4 so it is good for everyday use

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Sigma APO Teleconverter 1.4x EX DG for ...- User Rating:
Summary for Sigma APO Teleconverter 1.4x EX DG for ...- Excellent add on
Notes on Sigma APO Teleconverter 1.4x EX DG for ...- For the past year I have used mine on a regular basis with my Sigma 150 macro lens. This creates a 210 F4 macro that is amazing. It is not possible to tell, by looking at the pictures, which were taken with or without this TC. Buying this gives you a second lens of equal quality for a little bit of money.

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Sigma APO Teleconverter 1.4x EX DG for ...- User Rating:
Summary for Sigma APO Teleconverter 1.4x EX DG for ...- Works as designed, great little gadget
Notes on Sigma APO Teleconverter 1.4x EX DG for ...- I have both a Sigma 50-500 (aka Bigma) and a Sigma 100-300 f/4. Prior to getting the latter, I was able to use the Bigma with my Kenko Pro 300 1.4X TC DG on my Nikon D70. However, the Kenko refuses to work with the 100-300 so I have to buy this Sigma TC which works extremely well with the 100-300. However, unlike the Kenko, I cannot retract the Bigma all the way with the Sigma TC which is why I only give the Sigma TC 4 stars.

The 100-300 f/4 focuses as fast with or without the TC and I don't seem to lose image quality with the Sigma TC either. The EXIF info also correctly shows 420 mm was used. [...].

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Sigma APO Teleconverter 1.4x EX DG for ...- User Rating:
Summary for Sigma APO Teleconverter 1.4x EX DG for ...- Sigma 1.4x Teleconverter
Notes on Sigma APO Teleconverter 1.4x EX DG for ...- Mating perfectly with the excellent Sigma 50-500mm lens, this teleconverter increases focal length. The downside is that it decreases aperture by 1+ stop, and you lose the autofocus capabilities of the lens.

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