Hi Paul, Yes I've looked at Sigma and even owned a few when I was a Nikon Shooter
I don't know theres just something about the feel of em I don't like, maybe it's the "ZEN" finish: I've just never warmed to any Sigma I've tried, I don't think I'm a gear snob... No really I'm not.............

I've narrowed it down to two
Pentax SMC 100MM F2.8 WR Macro and
Tamron SP AF90mm F/2.8 Di
So I start looking at reviews then I come across this
http://www.tamronlensreview.com/tamron90macrovspentax100macrowr
Strikes me as a very biased peice of writing with at least a few facts out of place!
It really sticks in my throat when I see biased writing like this
Any way I want to garner opinions on the two lenses, unbiased if possible please...
My pluses for the Pentax are Quickshift implementation (Over the Tamron Shift method)and build quality,
for the Tamron price and focus limiter
but what about the actual image quality:
Never been that much of a Macro Shooter and the lens would probably see more use as a dedicated Landscaping Prime but I will use it for the odd Macro, fits nicely in between my 77 and 200...

I got a 77...
https://www.pentaxuser.com/forum/topic/testing-the-waters----23517

Many thanks to you two on helping me do the right thing, for me!
I think I'm starting to get the hang of the K7 and I think it's worth persevering with, as it can only make me a better Post Processor in the long run:
The light was sooo Bad yesterday! Forecast was for sunshine with light fluffy clouds, So I went to the English Lake District, which is only a short bus ride away for me. That'll teach me to believe the Met Office! Didn't bring me Tripod so All these are with the k7 and Limiteds at between 1/6th and 1/20th of a second handheld, SR Works...
























Last two shots are of Nab Ghyll near Rydal Mount Hall, Actually put my foot in that one! Brrr...

77 Still up for grabs!
£500 Cash coz it's Mint!
Or £150 cash and a DA 70mm F2.4
Or a direct swap for a DFA 100 F2.8 WR
Erm Bump...

Agreed, thats why we both have our Slightly less wide lenses
I find myself now always taking a couple with the 21 as well when I spot the really wide shot with the 15, because more often than not I'll like the 21 version better

I broadly agree here, there is a certain amount of technique to filling the foreground with the really wides that I've never quite got! I have a friend who is a Nikon Shooter with their 10-24mm, who pulls out great shots all the time. His Wide Landscapes look really good but mine are usually a bit lacklustre for all the reasons you give above.
I owned the 12-24mm for a short time and mine spent all it's time at 24mm. I think I pulled this one off but it's a rarity for me...

Hi Jim i actually find I use the 21 more and save the 15 for that extra wide vista, for Genral Landscapes the 21 just seems right! Won't help your LBA one bit that won't

Stefan and Unlocker you are ringing bells!
Many thanks...

Gillbod, You don't know me yet you know me! I have Stupid Arthritic Sausage fingers
The amount of body caps,, lens caps, terminal caps, I have lost is unbelievable
Worst when I can see it happening and can't stop it! I've rolled em off cliffs and allsorts, My Partner has threatened to carry spares or do the Mother thing and put em on a long peice of string thru my jacket like with kids mittens
Yeah I can see me being in the Doghouse for losing the 40, sort of leaning toward a kr body and just leave it on there as my walk around/go anywhere ready cam.