Ah yes, I should have said all of the Pentax DSLRs...

Dan

All of the Pentax models have this, as far as I'm aware.

Dan

Not the same thing - the 1.7x AF Convertor is a 1.7x teleconvertor that has movable elements, so it gives autofocus when used with manual focus lenses.

The two you mentioned are for use with autofocus lenses, but will not make manual lenses autofocus.

Pentax brought out the 1.7x convertor when they first brought out AF cameras, so that AF could be used with the vast number of manual lenses already in use.

The MC7 and MC4 designations refer (I believe) to the number of elements used to make the convertor lens - the more lenses the better (within reason).

Dan

Took the thoughts right out of my head, although I did use mine last week (the AF Adaptor, not my head ). If you're going to ebay yours, let me know and I'll make sure I don't put mine on at the same time.

Dan

According to Ned Bunnell, the units have started to be shipped out, but how soon they'll reach the UK...

http://nedbunnell.blogspot.com/2007/07/sdm-lenses-shipping.html

Dan

Hi Clarky,

I use the Sigma 105mm f/2.8 macro, and it's a lovely lens. I would expect the 50mm to produce just as good images, but the disadvantage of this lens would be that you'd need to be much closer to your subject (which could be a problem if you're trying to get shots of insects).

The Tamron won't give you anything like lifesize reproduction, so it's not a proper macro lens, just one that focuses closer than you might expect. I'm sure you'd be soon disappointed if the macro bug gets you like it has me.

Build quality of both the Sigma EX range lenses that I have is superb.

Dan

I searched for ebay for 'Centon'.

Note this doesn't have the controlable power that George rightly points out is a bonus, and I have to say that I have no idea what the guide number is, but would guess 30 from the model number.

Oh, just checked back on the ebay page and saw you got it!

I keep being tempted by the AF360, but really can't justify it for the amount I'd use it - the Centon works perfectly for my macro stuff, as well as the odd social function!

Have fun,
Dan

Well, you can either pay out for a P-TTL one (like the current Pentax ones, or the Samsung or Sigma equivalents), or get yourself a cheap manual one to get yourself started.

I use one of these and it does me fine, even when the in trickier situations - it only takes a couple of test shots to sort your exposure and then you're off!

Only takes 2 seconds to recharge to full power too, which is nice.

Dan

I think it's Don who should keep quiet, coming on here, saying "MY Canon 420ex flash unit", I ask you!

Dan

Hopefully the shutter life expectancy is a little longer than 10,000 actuations. I think you meant 100,000.

Dan