Gerry Winterbourne

Gerry Winterbourne

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

K-5
K-7
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
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

  • I use Adobe PS (in CC) for stacking. As far as I know it just uses whatever luminance information there is so it has no effect on DR. As already suggested, perceived sharpness goes up because ...
  • There probably aren't enough flower lovers for DPR to think it's worth a special forum: I just looked quickly on the Nature and Wildlife forum and most seemed to be birds. As already suggested, you ...
  • Extension tubes are probably more versatile and don't erode image quality because they don't put any extra glass between subject and sensor. You need to be sure any tubes you buy are automatic: ...
  • Replied in PS Elements
    If you go to the Help menu (top of screen) you'll see something like PS Elements online help . Click to get online and then go to Download PDF version (or something like that). Save the PDF and you ...
  • Replied in Updated
    Significantly but not infinitely better. Personally I don't like the trees looking like Christmas poinsettias. You still seem to be taking a long time. If you open your raw file in ACR you should ...
  • I've opened your photo and given it a few tweaks so that I can see it more clearly; I've removed chromatic aberrations and boosted the detail in Topaz Detail. Note that this is not intended to be ...
  • Yes, I suspect a blurring of terminology here. The software suppliers probably ought to use "Highlight reconstruction" for the case where channels are clipped. As you say, I avoid overexposure as ...
  • I use Pentax  K-5. A couple of years ago I responded to a request for raw files from a K-5 so that PictureCode could develop profiles for that model' It turned into quite an exercise: they asked ...
  • Raw files are in 12-bit (some top-end cameras use 14-bit) so they have more flexibility for adjustment. This is true for any type of camera. JPG also compresses image data, which also reduces ...
  • As already suggested, I think it's better just to live with it. If you hadn't told us about the spray I'd just have accepted that that's the way it was. However, I think your attempt to improve the ...
  • No. The mass market started about 30 years before 35mm was invented, with 120 film cameras - which gives a size bigger than modern MF sensors. 120, and later 127, film cameras held the mass market ...
  • This link describes A-DEP as being OK for deep DOF but not for the shallow DOF the OP asks about. http://www.digital-photo-secrets.com/tip/1557/what-is-a-dep-on-a-canon-camera-and-how-do-i-use-it/
  • You started by saying that one "has to" do some things to obtain sharp pictures. Several of us said that these aren't things that one "has to" do although they can be useful and often are, but not ...
  • There are two separate questions here. First is the effectiveness of stabilisation: the ability of the system to keep a static subject stable in the image when the camera is moving. This is almost ...
  • Think of five different cars: start with a Fiat 500 and through various types up to a Rolls Royce; or up to a big SUV. You know that they have different top speed, different fuel consumption, ...
  • Replied in Too soft?
    Looking at 100% the only really sharp details are the eyebrows, so I don't think it's missed focus. What's a bit puzzling, though, is that I'd expect to see a zone at the same distance with the ...
  • I think might be possible theoretically but I'm sure it isn't available in any camera on the market. Let's try this. As you've now been told, for a given camera and lens DOF depends mainly on (1) ...
  • Post 1 Post 2 Reading both posts together I see some overlap. I understand that you might not want to keep 40,000 files just because storage is cheap. But I'd think that if you really regard your ...
  • Replied in Let's try again
    I mentioned my previous posts above: this is the one where I listed reasons why your advice would not always automatically lead to success http://www.dpreview.com/forums/post/54575462 You claimed ...
  • It's an analogy intended to help people understand the broad principle of how light is collected. Other people have made fun of your question. I'll assume you really are seriously asking it. I said ...
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Total messages 7829
Threads started 146
Last post 14 hours ago
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Last post Apr 12, 2013
Total reviews 1
Last review Mar 24, 2007
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