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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Recent content by tjsimonsen

  1. tjsimonsen

    New Sigma 150/600 contemporary

    It does look quite impressive! And in general the background looks pretty good too, although the witch-hazel shoot does show the lens' limitations in that respect. It's not in anyway worse than my EF100-400L IS, though. Thomas
  2. tjsimonsen

    Thailand Butterflies ID

    I'm pretty sure #3 is a Terinos, and it looks mostly like Terinos clarissa. Thomas
  3. tjsimonsen

    New Sigma 150/600

    Well Said! Thomas
  4. tjsimonsen

    New 100-400

    FF review on Photozone: http://www.photozone.de/canon_eos_ff/896-canon100400f4556is2 Looks pretty good, I must say. Thomas
  5. tjsimonsen

    New Sigma 150/600

    Well, yes. But we can tell our flycatchers apart B (: Thomas
  6. tjsimonsen

    New 100-400

    Mostly with a 350D. The exception being Oz where I used a 40D. So generally, no automatic sensor cleaning. Thomas
  7. tjsimonsen

    New 100-400

    Agree 100% - and it may well be that some people tend to pump the push-pull zomm unnecessarily more than they would twist a traditional zoom and thereby shift more air and consequently suck in more dust. That said, I have never been a fan of the push-pull zoom mechanism (not when I first got...
  8. tjsimonsen

    New 100-400

    Well, I have used mine in SE Alberta, Utah, Nevada, Arizona, South Africa and Australia without any excessive dust problems, certainly nothing that has any effect on the IQ. And these places are pretty much as dusty as they come. Thomas
  9. tjsimonsen

    Moth ID Portugal

    Given the red bands on the abdomen, I'd say Zygaena sarpedon. Thomas
  10. tjsimonsen

    Silk Moth ID --- specimen

    I am leaning towards a very faded Attacus atlas. Thomas
  11. tjsimonsen

    Tamron SP 150-600mm F5-6.3 DI IF VC USD

    Bloody flames, yes. What I particularly like is that the Oxpecker shot shows that even with f13 the background is more than decent for a zoom. Thomas
  12. tjsimonsen

    Tamron SP 150-600mm F5-6.3 DI IF VC USD

    Image stabilisation has an effect on the photographer as well: when the image appears to be stable in the view finder, you are more likely to hold the camere still; whereas you are more likely to shake the camera if the image already appaer to be shaking. When panning (as you do for BIFs) this...
  13. tjsimonsen

    best macro lens

    I agree with much of what you say, but not with respect to a lens hood being necessary, or even useful, on a Canon lens - it gets in the way of the (often necessary) flash. Thomas
  14. tjsimonsen

    ID please

    Can't think of an European species that looks like this. I still think it is an introduced H. fundata. Thomas
  15. tjsimonsen

    ID please

    I think it is more than bizarre. It looks like a perfect match for Heoclisis fundata - an Australian endemic! Thomas
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