John,
Thanks for your thoughts. I'll think again, and most likely do nothing!
Malcolm

How well would a 2x converter work with the 16-45mm on the *ist D?

Which is the best make/model?

Regarding a telephoto zoom to compliment my 16-45mm, I think I already have the lens which was at the bottom of my cupboard!

For a long time I have owned an old Sigma 75-300 f/4.5 - f/5.6 DL AF "trombone" lens for use with my Pentax MZ-5n (now, sadly, unused).

As I was not always happy with its edge definition, particularly at wide apertures, I had dismissed this as a suitable lens for the *ist D.

But I forgot the smaller size of the image sensor, compared with 35mm film and now I find the edge definition is very acceptable when used with the digital camera.

So I now have a 110-450mm zoom that I'm very happy with.

Funny old world!

Hi John

Yes, I'm him! Upgrading from the 18-35mm to the 16-45mm.

Your lens packed and ready to go!

Regards,
Malcolm

Having bought the 16-45mm (and am delighted with it) I am now looking for a zoom lens in the 50 or 70 to 200 or 300mm range, new or used.

My order of priority is image quality (edge detail and good contrast) followed by light weight.

Any suggestions?

Malcolm

Why not try a test for dead pixels using
http://www.starzen.com/imaging/deadpixeltest.htm

Also, use a puffer to make sure that there is no dust on the ccd.

Having started this thread I'd thought I'd let you know that I have bought the 16-45mm and am delighted with it.

I went to a wedding on Saturday and some of the shots are at
http://www.aaka92.ukgateway.net/Wedding/

I have one question. For the first 20 or so shots I had the camera set to the MTF program, and then realised that virtually every shot was being taken at full aperture (f/4). I switched to Green mode and things were then around f/8.

Today I've done a test of a landscape. Here are the results ...
Green - 1/640 at f/8
Hi Speed - 1/1600 at f/5.6
Depth - 1/125 at f/18
MTF - 1/2500 at f/4.5

Does the MTF setting sound right?

Hi Kim

I have replied with a private message.

Malcolm

How would the Sigma 18-125 compare with the Pentax 16-45 in terms of image quality at the wide end? It is quite a bit cheaper with a slightly wider aperture. Has anyone experience of the new Sigma?

Thanks. That's just the sort of recommendation I was hoping for. I'll see what I can get for the 20mm and then make a purchase.