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

  • Pentax K-1 + the three FA Limited lenses (31/1.8, 43/1.9, 77/1.8). That would cost slightly over $5,000. I'd spend the rest on a holiday to try out the new camera and lenses + my existing Pentax ...
  • In other words, you assume that your composition and focus will be better than theirs. "Better", of course, is a matter of taste. If their taste is for a selfie that's their prerogative. From ...
  • As far as I know it never was a definition. I believe the definition was (and is) "acceptably sharp" and standard DOF calculations say what would be "acceptably sharp viewed as 8x10 print at 12 ...
  • There's nothing wrong with spending £1,000 on a camera if you want a new one. Indeed, many people would think that cheap. But £1,000 just to be able to take easy panoramas seems excessive. Why ...
  • Several people have answered in words. This link has pictures to demonstrate http://www.clarkvision.com/photoinfo/dof_myth/ As long as your scene and its lighting are in the range covered by two ...
  • Here's the tricky part - how do you decide what's relevant? When you are out with your camera you see everything around you so you know what's in the foreground and out to the sides; but your ...
  • I don't follow your reasoning. As you say, the OP asked about mirrorless cameras for which the answer is that there is no difference between EVF and LCD (LV). But then you decided to mention OVF ...
  • Your early questions say "I shoot --- only more than 90% of the time", which clearly means "--- only" for "more than 90% of the time". Later you say ""I shoot --- only 90% of the time"; as the ...
  • Yes; probably pollen/seeds although dust is another possibility. Anything close to the lens can catch the light and show in the picture. This shot was taken through a window (very close) with a ...
  • It won't damage anything but unless your calibration tool is relatively sophisticated the colours won't be the same on both screens. That only matters if you try to edit colours on both monitors. I ...
  • Many people seem to like it but the idea of "perceptual megapixels" is deeply flawed. A sensor has a certain number of pixels - your camera has 6000 rows with 4000 pixels in each, giving a total ...
  • So far so good; it's usually not a good idea to rely entirely on the camera to know what you want. Here I think you are a bit confused: there is only one Manual mode so saying "manual mode s" doesn ...
  • You've been given good advice already about learning exposure and how to control it so I won't talk about that. But there's plenty more to discuss. First, perspective. This is the way things look ...
  • No. In principle the longer the extension tube the greater the magnification. I say "greater" rather than "best" because the best magnification is whatever suits your subject. If the sensor is 16mm ...
  • That's why I was careful to write ISO, as in the "ISO" setting on the camera , because that does affect the raw file. The OP was asking about what affects his raw files, not for a lecture on ...
  • No. The raw file itself contains all the light data collected by the sensor. The output (JPG, TIF or whatever) uses the WB to pull out some of the light data, but all the data are thee in the raw ...
  • According to the EXIF data you shot in manual mode. Is that correct? If so, as you are new to photography, why are you trying to control exposure yourself? If the EXIF is wrong and you used one of ...
  • I can't improve on Leonard's general answer. Not an error. For example, this 300mm lens is 184mm long on the Pentax mount of 45.46mm flange distance, so the overall length is about 229mm; quite a ...
  • It's the Pentax DA35/2.8 http://www.ricoh-imaging.co.uk/en/product/21730/body/overview/Photo-Lenses.html http://photo.net/columns/mjohnston/pentax-35mm-lens/optical-discussion/ The FOV is the same ...
  • As Charlie says, these aren't 1:1 so the situation is very different from what you've been asking. These two shots are with macro lenses; the first 35mm, second 100mm. The field of view at 60mm ...
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Total messages 11130
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Last post 17 min ago
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Last post 3 months ago
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Last review Mar 24, 2007
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