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

  • Al of that is true and I have no quarrel with it. However, I think we can go further into it. Perspective is the way things look smaller when they are further away. This is an illusion, of course, ...
  • Replied in What mistake?
    What's stupid about it? It suits some people better than the previous system. In the abstract changing from something you like to something I like isn't a mistake. If it leads to greater ...
  • No. In PDAF the lens can start from anywhere and the camera's AF system just measures phase differences for each point that's switched on. It then calculates the focus distance that will maximise ...
  • That's true but it doesn't actually change very much. Look at this shot. Filling my screen the 14.5 and 15.3 marks are the last ones that look "sharp", and that's more or less the same from in ...
  • False analogy. If someone takes my car (a) I can't use it and (b) they are likely to damage it. So I suffer real deprivation and loss. With a photo, unless I intend to sell it (or rights in it) I ...
  • Possibly, but the key fact I noted was that the analysts had predicted earnings of 26c per share and actual earnings were 28c. That's 7.8% better than prediction. As an investor I'd be more ...
  • True for many lenses, possibly most, but there are quite a lot where it does show at wider apertures (with smaller apertures the effect is usually masked by DOF). Reviews mention it when it's ...
  • It's not random. It's working to a set of algorithms in its logic. The problem for you is knowing how those algorithms work. Unless you do, the camera's choice of points will seem random to you. ...
  • That's why we have cameras with selectable focus points - we point the camera in the desired direction and select the focus point that covers what we want to focus on. For ordinary photography, ...
  • No. I'd expect it just to boost but I'd like to know if I'm right or wrong.
  • http://digital-photography-school.com/the-problem-with-the-focus-recompose-method/
  • Fall-off causes less light to reach the corners. Does the software solution cure the darkening to appear less by boosting the signal (with corresponding increase in noise) or something more subtle?
  • When we talk of "fast" lenses we mean their widest (maximum) aperture because the wider the aperture the shorter (faster) the shutter speed needs to be for a given amount of light. The 18-55 has ...
  • I use Photoshop. I'm afraid I don't know the capability of those. The basic requirement is that the software supports layers (that should be easy to discover from the website offering the ...
  • Replied in Up to 4:1
    I especially like the droplets acting as lenses. I take that sort of question with a grain of salt (APS-C, 105mm  + 65mm extension tube + 2X TC; single shot nominally f/16). Stack of 29 exposures, ...
  • The one in your hand at the time. Pretty well all modern cameras produce great quality images as long as they are used within their operating limits. The RX100 has a smaller sensor so it will run ...
  • I think most reviews say the 4-5.6 is a bit sharper than the 3.5 of the two 10-20s. When the 8-16 came out it got good reviews; I bought it and then sold my 10-20/4-5.6 so I had both of them for a ...
  • There are several UWA lenses that start at 10mm from different makers: 10-20, 10-22, 10-24. I used to use the Sigma 10-20/4-5.6 (older than the Sigma 10-20/3.5 but reputedly better and certainly ...
  • This isn't really a book but it has lots of good information about the technical side of photography http://www.cambridgeincolour.com/tutorials.htm. There's rather less on composition and the ...
  • As you know, I gave the OP a hard time in another thread so I decided to go easy in this one. I tend to blur the edges by talking about macro and close-up to avoid questions like "is 1:3 macro? ...
Activity older than 12 months is not displayed.
Gerry Winterbourne has not added any gear yet.
Total messages 7623
Threads started 146
Last post 3 hours ago
Total comments 2
Total likes 12
Last post Apr 12, 2013
Total reviews 1
Last review Mar 24, 2007
Entries 0
Votes cast 0
Photos uploaded 0