mike703

mike703

Lives in United Kingdom Yorkshire, United Kingdom
Joined on May 18, 2007

mike703's recent activity

  • Replied in Serious issue
    I wonder if you actually understand any of those. Anyone who can write something as meaningless as 'the cancer rate per population density rose by 2 million in 30 years' should be careful about ...
  • ... an entirely appropriate response.
  • Replied in www.dhmo.org
    Yes, DHMO is a killer all right and nobody seems to care. You can read all about it here: http://www.dhmo.org Best wishes
  • I work in a university chemistry department.  I regularly take pics of interesting or newsworthy events (anything from graduation day, to visits by distinguished speakers, or entertaining ...
  • No problem, happens all the time... tone of voice just doesn't come across properly in typing... That is an evil combination that is very exothermic... if I recall correctly it was tried as a way ...
  • A common misconception :-) A sign outside a local supermarket a few weeks ago: 'Our organic food contains no chemicals.' Sigh... Best wishes
  • Oh for heavens sake.... it was a joke. For the record I am a chemistry professor at a UK university with around four hundred research publications in various aspects of inorganic chemistry. But ...
  • Did you actually read the text on the link you provided? It ends like this: "In a letter to Nature, researchers in Canada described tests they had performed on burning PTFE ...
  • Thanks for the laugh Rose.  How frail and predictable we are :-)
  • OK if you are in the USA... http://www.bhphotovideo.com/c/product/476498-REG/Voigtlander_Bessa_R3M_1_1_Viewfinder_35mm.html Best wishes
  • Why wait until arriving in KL when you don't know your way around there and you might not be able to get what you want?  Why not just buy a fllm camera now - ebay has lots - and take it with you? B ...
  • If you're sufficiently bored to want to start another silly argument about equivalence do it somewhere else.
  • http://www.cambridgeincolour.com/tutorials/dof-calculator.htm Use distance to subject 10 cm, and f/11. FF camera with 50mm lens: DOF 9.96 to 10.04 cm 1.6x crop camera with 30mm lens (same framing): ...
  • Larger DOF is easier to get with small-sensor cameras.  How much image quality do you need - poster-size prints at 300 pixels per inch, or screen use?  How big are the objects you want to photograph? ...
  • Too late to fix it - a lot of detail has been lost when the filter effect was applied and you can't get it back.  Actually though I quite like it in this case... what I find worse is the date at ...
  • You seem to be mixing up two different things: (i) the depth of field of a given camera / lens / aperture combination; this can be calculated. (ii) the smoothness of the out-of-focus blur: this ...
  • The 300 dpi figure is based on the known resolution limits of the human eye. From https://en.wikipedia.org/wiki/Eye#Visual_acuity 'For a human eye with excellent acuity, the maximum theoretical ...
  • I think Mr. Chips was being sarcastic...
  • Which country are you in?  Nearly everywhere there is no problem with taking pics of what goes on in public places and using them in a 'journalistic' or 'artistic' way.  If this were not allowed, ...
  • Very nice shot of the plane taking off! Your camera is fine. If you look hard enough, especially in shadow areas, there is always noise, even at base ISO.  Three things can make it worse than you ...
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Total messages 6168
Threads started 176
Last post 2 days ago
Total comments 6
Total likes 10
Last post 4 months ago
Total reviews 0
Entries 6
Votes cast 0
Last entry Feb 7, 2010
Photos uploaded 38
Last upload Nov 4, 2012