All Forum Comments
Comment by Mike-P posted on More pics with Pentax-F 1.7X AF ADAPTER with DA*300 at 23/03/2009 - 15:19
Mike, what physical distance the birds you shot usually are when you decide to use the TC?
Amin
I took this earlier today with no TC and a good way up, it's a pretty large crop but I do think the IQ would have suffered with a TC.

Comment by Mike-P posted on More pics with Pentax-F 1.7X AF ADAPTER with DA*300 at 23/03/2009 - 15:00
I should have done much better on this one . The lack of sharpening just disappointed me big time when I saw the feet and the underside of the bird with lack of sharpness
Not sure of the original size of these but you would probably get better IQ with just the lens and cropping.
I only use my TC's if the subject is just too far away for a decent crop.
Comment by Mike-P posted on More pics with Pentax-F 1.7X AF ADAPTER with DA*300 at 23/03/2009 - 14:25
Comment by Mike-P posted on Northumbria at 23/03/2009 - 13:02
After looking at the galleries on flickr for the Pentax and the Sigma I have ordered the Sigma. many thanks to you all for the kind and helpful replies.
Comment by Mike-P posted on Pentax 16 -45 or Sigma 17 -70 or Tamron 17 - 50 at 23/03/2009 - 11:21
Don't think you can do a lot about it.
Comment by Mike-P posted on how easy is it to change a kaf mount at 22/03/2009 - 11:12
Remember too the tamron 200£ cheaper 10 days ago, anyone knows the reason?
I went for an older non HSM non Macro version of the Sigma 70-200mm f2.8 because it will work with the current EX 1.4x and 2x teleconverters and also because it is apparently sharper than the new lens.
Oh, and also because I bagged it off Ebay for £300.
Comment by Mike-P posted on Sigma vs Tamron 70-200/2.8 at 21/03/2009 - 18:04
what would i be looking at for a 2.8 lens
Comment by Mike-P posted on Lens for low light,Dark scenes at 21/03/2009 - 13:29
Comment by Mike-P posted on Fence to the rescue at 21/03/2009 - 12:24


I would be quite keen on having a try on a TC that would allow me to use SDM to focus and then compare it with the AF1.7 I have.
May be one of these days I run into someone who has one of the Tamrons I think that allows that and then I can have a go at it. Mike I think you have one of those don't you? but Spain is definitely way too far .
Thanks
Amin
I wouldn't mind having a go with the Pentax 1.7 as I have a lot of manual lenses, maybe we could arrange a trade for a few day sometime soon