I use both the Sigma 105mm and the 150mm and I'd make the following comparisons: 105mm focuses at about 12cm closest, barrel extends to focus, two stage change from AF to MF (gear change and switch) but results in easy/small rotation to manually focus 150mm focuses at about 15cm closest, internal fo...

Indeed a great moment with great pics - and a very pleasant conclusion too!

Depending on weather and what's happening:

Looks like that lens'll turn in some good shots!

Lovely Comma shot!

One of the techniques I've used with some success, as mentioned earlier, is High Pass sharpening (I've actually never used USM). On final sized-for-web image: In the Layers window, right click the Background to make a Background Copy Filters, Other, High Pass Set to between 0.7 and 1.5 (varies treme...

And are all those Speed Cameras to be trusted? It would seemingly be the easiest thing in the world to alter the supposed read-out to earn more money for the local authority. Easier for them to "accidentally" allow them to lose the calibration of the flash timing (they flash twice and tim...

Markulous wrote: It is possible to alter EXIF data (there are plenty of editors around) so it's not reliable for proof purposes - you can even alter RAW although that is more difficult and may not pass a forensic examination Well, now that film cameras are disappearing rapidly and digital are becom...

I would like to shoot in RAW, so that I can edit some of this out, but I wouldn't know where to start. Any help would be appreciated. You don't actually alter RAW files but process them to produce an image which you can then edit (so no different to if you shot it as a JPG to begin with!). RAW just...

I had always assumed that if a photo is needed as forensic evidence, eg picture of a crime scene or an immigrant Queen of Spain flying over the cliffs of Dover, then if has to be clear from the EXIF that it is an un-altered original as a modified photo that still shows the EXIF could be used to fal...

Markulous - For me this one was nearly but not quite superb. The composition I love, the colours I love, but the fine detail isn’t quite as I had hoped. Perhaps I’m being a bit picky with this one, but with such a simple composition (which works really well) I look for the detail. Perhaps it’s a he...

Congrats to the winners and thanks to Chris for voting for me (and the critiques!)

{Mark rushes off to check yesterday's pics...........} :D {........ and plods disconsolately back} :( Well, maybe I'll get something in the rest of the month (tho' we're not getting anything other than Large/Small Whites, Red Admirals and Peacocks :() Quite tricky to get decent shots of the Whites ...

When using a macro, am i on top of the butterfly or shooting from a range that won't scare the butterfly away. Sigma 105mm Minimum Focusing Distance 31.3cm/12.3 in. Sigma 150mm Minimum Focusing Distance 38.0cm/15.0 in So, yup, pretty close! :D (but the minimum is for 1:1, so to get all butterfly in...

..... and just he one lens , a Canon 28-135 IS USM - but just cant get sharp macro shots on it......... It would be nice to hear from other 400D users how they are getting on with the 150 on this body, and also, if they have the same problems that i have using the 28-135 at its macro end. Think you...

I'm on my 2nd Sigma 105mm (have one on my Sigma SD10 - still to get better shots with my current 350D) and use it in preference to Sigma 150mm as the manual focus is so much easier even if it doesn't have a tripod collar for swift switching between landscape/portrait when I'm tripoded. I've also use...

eccles wrote:BTW, isn't it 'ragwort' and 'knapweed'?

Is this the moment I claim a deliberate mistake? LOL!

( )

Rosy Rustic wrote:BTW, if anyone wants to buy my vote I am sure we can agree a reasonable price.

I can offer one tatty Red Admiral and one Cinnabar'd Ragweed!

Fairly sure this was my first - had had my Sigma SD10 and Sigma 105mm macro lens for some time

An enjoyable thread - a pity some dog owners can't be encouraged to read it! As a dog owner (German Shepherd) I'll quickly add that she's usually on a lead (when there's likely to be anyone around), we clear up after her and I never expect all and sundry to tolerate dogs - as in the dreaded "Sh...