again, apologies. Nothing is going right. Best just leave it please. Sorry for all the confusion.

regards Thoramay.

I apologise for my wretched computer. Have tried again.

regards Thoramay

Thanks guys, now educated, at least the first part. Checked the manuel to disable the focus on the shutter button but obviously it is not obvious to me. Age shall not weary us, to quote himself, but it does frustrate me. No big deal until I make my mind up whether to change. I only use manual focus for macro, so it's no big deal to stay with the Tamron.

regards thoramay

pm sent.

Hefty . Missed the quick shift ability but not sure what it actually does. Something about changing from auto to manual I seem to remember. Can you spare me time to fully explain, please.

regards thoramay.

Having digested this review I have ended up with a wants. Yet! I have the Tamron 90mm 2.8. Macro. Do I or don't I? The 100mm is Pentax and thereby a loyalty issue but in the end it is a question of what other benefit is there. Any thoughts that will help me decide.

regards Thoramay.

I have a choice of several short zooms and a 90mm Tamron macro. Have just been using my Pentax F 24-50mm zoom which is a great little lens for most situations but it is the longer zooms that I need to sort. Have also a 600mm mirror lens. Spoilt for choice, really. I have read and seen work with the 55-300 and it interests me. Could it be that the grass is greener.
The 18-250 does not impress me because it needs to be used in the auto mode and I do most manual, but to be fair I have not given it much use and would be grateful for any comments by those who know this lens.

regards Thoramay

I have the following lens.

Pentax 70-210 F4-5.6

Pentax 100-300 F4.5-5.6

Tamron 70-300 F4-5.6

Tamron 18-250 F 3.5- 6.3

The last one I have bought as a walk about for my coming N. Ireland holiday and will probably move this on, but I realistically only need one of these lens, but which one?

My real preference would be to move them all on and go for the Pentax 55-300 but would that be a sensible move? any thoughts, please.

regards. Thoramay

I get the feeling that pentaxians can be toooooo! sensitive. I received this email along with half a dozen others that offered me products I did not want. I ignored them all assuming that they were intended to those whose interests it served
As for the term canikon. Why don't we just leave this for their users to get angry about. It is nothing to us pentaxians.

regards thoramay.

What is the search engine.? How do I use this please? Have spent hours searching for a subject that had happened a few weeks ago. To be able to use a search engine, for me, would be a real blessing.

regrads Thoramay.