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  1. Brian G

    Stairs - an open thread

    South Bank Centre South Bank Centre_04 by Brian Gibson, on Flickr
  2. Brian G

    Bridges - An open thread

    Southwark Bridge Southwark Bridge by Brian Gibson, on Flickr
  3. Brian G

    Poor results from Sigma Ultra-Wide Angle lens plus confusing EXIF data

    Thanks for that link, I'd not seen that before. This is the second example I've had of this lens. I returned the first one to be sent back to Sigma UK, but I actually received a replacement. When I suspected a focussing problem with the first example, I was deliberately changing focus manually...
  4. Brian G

    Poor results from Sigma Ultra-Wide Angle lens plus confusing EXIF data

    If I were experiencing misfocus then that would have been taken care of by focussing in "Live View" but I cannot see any difference between a shot taken in Live View and one using "conventional" focus, so I don't think micro adjustment is likely to make much difference, besides which, any...
  5. Brian G

    Poor results from Sigma Ultra-Wide Angle lens plus confusing EXIF data

    In case you don't understand, a comparison involves comparing two similar things. Besides which, at f8 the depth of field more than enbraces the comparison range. The Canon lens is clearly sharper here. Yes, that's right - but why?
  6. Brian G

    Stairs - an open thread

    South Bank Centre, London Hayward Gallery Stairs by Brian Gibson, on Flickr
  7. Brian G

    Poor results from Sigma Ultra-Wide Angle lens plus confusing EXIF data

    Not ideal conditions for testing, but I managed to get out yesterday and did some comparisons between the Sigma 8-16 and the Canon 10-22. One thing that is immediately apparent is the Sigma underexposes by 1/3 to 1/2 stop compared to the Canon. I think I'm going to hang on to this example of the...
  8. Brian G

    Poor results from Sigma Ultra-Wide Angle lens plus confusing EXIF data

    Not too sure what that's going to prove, but I will post something later. Still doesn't answer the EXIF question though. I also have the Canon 10-22MM EF-S ultra-wide, and I've never had any focus problems with that. That's what I'm comparing the results from the Sigma with. Besides which, if...
  9. Brian G

    Windows and doors.

    Sir Christopher Wren's house, Southwark, London Christopher Wren's House Southwark London by Brian Gibson, on Flickr
  10. Brian G

    Heal's Spiral staircase

    For those that are interested there is a guide to some of London's staircases here, although a few of the photos have been removed. I guess you can always do a search if there are any without photos that attract your interest.
  11. Brian G

    Heal's Spiral staircase

    I won't hijack this thread, but here is a link to one of the shots I took when I visited. View: https://www.flickr.com/photos/116923835@N07/46330922261/in/dateposted-public/ I don't recall having any exposure/contrast problems at the time. Obviously, it's not very bright in the depths of the...
  12. Brian G

    Poor results from Sigma Ultra-Wide Angle lens plus confusing EXIF data

    I normally use Canon lenses but as part of "Black Friday" I saw an offer for the Sigma 8-16mm UWA lens for APS-C from one of the major UK retailers, so I jumped in. I was extremely disappointed with the first example I received. Nothing seemed to be really sharp and I noticed that the focus...
  13. Brian G

    Heal's Spiral staircase

    They all look underexposed to me. When I went there I sought permission, but it was readily granted. I was even permitted access to an area that was closed off.
  14. Brian G

    Left eye or right eye?

    This subject has been surveyed to death, but in the past it's always turned out with a small majority for left-eye, even amongst right-handed people.
  15. Brian G

    Car buyers should have 'long, hard think' about diesel

    I was told that a diesel was only worthwhile if you did more than about 10,000 miles per year, due to the increased servicing costs. I've avoided buying one becase I was always aware of the cr&p that came out of the exhaust.
  16. Brian G

    Bridges - An open thread

    90c? That's really global warming!
  17. Brian G

    Bridges - An open thread

    Chelsea Bridge Chelsea Bridge_02 by Brian Gibson, on Flickr Grosvenor Rail Bridge Grosvenor Bridge_01 by Brian Gibson, on Flickr Does a Viaduct count as a Bridge? Holborn Viaduct Holborn Viaduct by Brian Gibson, on Flickr
  18. Brian G

    Bridges - An open thread

    Blackfriars Railway Bridge. Blackfriars Railway Bridge_01 by Brian Gibson, on Flickr
  19. Brian G

    Windows and doors.

    Central Criminal Court, London. Also known as "The Old Bailey" Central Criminal Court London by Brian Gibson, on Flickr
  20. Brian G

    affinity photo

    Thank you for posting those links. I haven't had time to look at them all, but in my opinion, they appear to be a lot more practical than the "Affinity Photo Workbook" and I learned something from the very first one I viewed. Although it's often useful to be able to refer to a book as you are...
  21. Brian G

    Windows and doors.

    Tilbury Fort. The Gunpowder Store. Tilbury Fort by Brian Gibson, on Flickr
  22. Brian G

    Christmas early morning @ St. Paul's and Millennium bridge

    I see they still haven't fixed the lights on Southwark Bridge. I photographed it about 6 months ago and the lights were out at that time.
  23. Brian G

    What colour temp lamp in your editing PC desk lamp

    If you are editing on a computer, it's essential you use a colour calibrated monitor. The colour temperature of the ambient lighting is only important if you are viewing prints. As realspeed says above, viewing in natural daylight (which is usually taken as 6500K) is probably best for prints.
  24. Brian G

    New camera and Lightroom option

    Lightroom is not compulsory for any camera. Canon's come with Digital Photo Pro (DPP) software, that includes an excellent raw convertor. If you want something else, there are loads of raw developer programs available that you don't have to pay a monthly rental fee for. Personally, I'm using On1...
  25. Brian G

    Windows and doors.

    Window in Helmsley Castle, Yorkshire Helmsley Castle by Brian Gibson, on Flickr
  26. Brian G

    Stairs - an open thread

    These are more steps than stairs, but I'll chuck them in here anyway Steps at Saltdean near Brighton by Brian Gibson, on Flickr
  27. Brian G

    Stairs - an open thread

    Lee Valley Velodrome, Queen Elizabeth Olympic Park, London Stratford Queen Elizabeth Olympic Park by Brian Gibson, on Flickr
  28. Brian G

    Stairs - an open thread

    St Michael's Mount, Cornwall. St Michael's Mount by Brian Gibson, on Flickr
  29. Brian G

    Bridges - An open thread

    Really happy this thread has been started. I have dozens of photos of bridges, enough to run a thread of my own. My first offering is the bridge over the Serpentine in Kensington Gardens, London. This also forms the boundary between Hyde Park and Kensington Gardens and The Serpentine and The...
  30. Brian G

    Beginner I'm going to my first camera club tonight!

    Our club is called a "Photographic Society" and I deliberately chose it over a "Camera Club" since I felt the latter sounded more like it was equipment based. Equipment is very rarely talked about and the emphasis is on pictures rather than equipment. We have regular competitions which are...
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