Gerry Winterbourne

Gerry Winterbourne

Lives in United Kingdom Berkshire, United Kingdom
Works as a Retired
Joined on Mar 24, 2007
About me:

K-3
K-5
Sigma 8-16/4.5-5.6
DA 35/2.8 macro ltd
FA 50/1.4
DA 70/2.4 ltd
DFA 100/2.8 WR macro
DA* 200/2.8
Tamron SP 300/5.6 tele-macro
Pentax AF Rear Converter 1.4X AW
Kenko 2x DGZ TC
13, 21, 31mm extension tubes
Q
8.5/1.9 (01)
K-to--Q mount adapter
AS540FGZ
AS360FGZ
3 tripods

Gerry Winterbourne's recent activity

  • Replied in Yes
    I can't say what Craig's answers might be but ... ... what relevance does a question about a 1/2.3" sensor have in a discussion comparing FF and APS- C? This question is unanswerable because you ...
  • You seem to have some differing objectives: (1) You are bothered about image quality, which suggests you want to get some pictures that are good in their own right.
  • If you want critique on individual shots post them here so we can see as we write; just giving links makes work for us. I had a quick look at these and I don't think they're very good nor very ...
  • Yes. Perhaps. At first glance the white balance looks too cool but I accept that you might have chosen that look deliberately. My version takes WB from the white wall at right, which may not be ...
  • That's your prerogative. In general words get their meanings by common consent through being used. There two exceptions to this, where words need to be defined: (1) someone invents a completely new ...
  • In some ways it is better - you've got rid of a lot of unwanted blank areas; but you'll never get interest into a shot if there wasn't anything interesting in the first place. See above: "you'll ...
  • 1.5 crop is linear and the number of MP goes with area - that's a factor of 2.25. 16 x 2.25 = 36 so if you crop a 36MP image to DX size you get 16MP of image; with the same lens you now have two ...
  • But citing it and the definition it contains doesn't make the term universal or exclusive. It has only restricted validity - and, as I said, whether one agrees depends on whether one accepts the ...
  • Note what Craig said about magnification . Magnification is the ratio between the size of the object and the size of its image on the sensor and, as Craig explained, it depends only on the lens and ...
  • When we see light it can be dim or bright; this range of brightness is the tonal range but recently the term dynamic range (DR) is more widely used so I'll use that. The range of darkness in nature ...
  • No. Most or all of the usages I listed concern the use of cameras so your suggestion would make no difference. Except in the restricted sense in that definition I see no difference between photographic
  • No. All of the usages I listed are photographic so your suggestion would make no difference. Non-photographic usages include exposure to the weather and, of course, indecent exposure.
  • The sequence of letters e.x.p.o.s.u.r.e is either a single word with a lot of meanings or a lot of different words that are spelled the same; it doesn't matter which way you look at it, the ...
  • I agree with what Craig says. Here's a reworking to illustrate some of his points. First the cropping: I presume you aren't interested in showing the road so I've cropped away as much as possible; ...
  • Not at all. In fact, quite the contrary. I'm trying to inform the OP about the way we see things that we want to photograph in their wider context; and from that how to think about selecting the ...
  • What is odd about understanding the way our eyes work (in terms of what we see) and then fitting the types of thing different lenses catch within that? If by "normal" you mean "common" you are ...
  • This understanding is completely wrong. That 50mm applies to full-frame cameras, not crop-sensors like yours; the applicable FL for you camera would be 33mm (nearest available is 35mm) but in fact ...
  • Replied in Macro Question
    The best definition of true macro is that the image on the sensor is the same size as the real-life object. In other words an object 15mm high will fill the height of your frame. This proportion ...
  • Pentax now makes all its DSLR bodies weather sealed; it used not to. Nikon makes its higher level bodies weather sealed but not others. Regardless of maker a non-sealed camera is more vulnerable ...
  • We all see in ultra-wide angle - about 220 degrees horizontally, which means we actually see slightly backwards. In other words, wider horizontally than fisheye. You can easily test that - stand ...
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Total messages 10240
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Last post 1 hour ago
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Last post Oct 26, 2014
Total reviews 1
Last review Mar 24, 2007
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