This particular photography accessory is usually referred to as tc's or teleconverters / tele-converters. I don't have much in-depth knowledge on them but one thing I know is that they can extend the reach of the lens attached to one. And this Tamron baby is a 2x TC, does that mean that it doubles the reach by a factor of 2? Not sure. But I know that it definitely extended the reach of my lenses.

I bought this unit second-hand for about RM100 in immaculate condition so I don't have much to complain really. I also just bought a new Sigma 70-300mm, which I'm very happy with and I thought, maybe this can help me get a better shot of the moon - something I've been wanting to do for a long time.

(post continue below...)

The images below demonstrate how far this has extended my camera's reach, from its humble beginning with the kit-lens. And what else to shoot if not one of my favorite scenes - the view of Kuala Lumpur from my balcony. All three images were shot with Pentax K10D at max focal length of the respective lenses.

	Pentax SMC 18-55mm kit-lens
	Sigma 70-300mm f4-5.6 APO DG
	Sigma 70-300mm f4-5.6 APO DG and Tamron SP F 2x 7-Element Teleconverter

As I've mentioned somewhere else, the hunt is now on for a new, or preferably second-hand tripod. The cheapy that came as a package with the K10D is now useless. In fact the whole set-up actually broke the head mechanism, and is the reason for the slightly soft 2nd and 3rd images. Oh, and a lens/tripod ring too. Damn... this IS an expensive hobby...

Update: I mentioned about taking a shot of the moon, so here it is Go to the gallery for a larger version of the photo.