Barry Pearson

Barry Pearson

Lives in United Kingdom Stockport, United Kingdom
Works as a Retired computer systems engineer
Joined on Sep 24, 2005
About me:

Photographic qualifications: LRPS, CPAGB

My websites require no registration, are non-commercial, and free of paid-for advertising.

I have no commercial or contractual relationship with digital photography companies, other than paying for the use of their products.

Barry Pearson's recent activity

  • The future of photography is code
  • I've tried walking around a city deliberately using just the D FA 15-30mm. It proved to be very effective except for street-candids. This raises the possibility that a two-lens approach might be: T ...
  • I like zooms, and the D FA 15-30mm is AF. Also heavy! Laowa is not AF. But the 3mm difference in focal length makes a very significant difference in field of view. And it is lighter. See diagram below.
  • Sounds good to me. My revised wish for Pentax - join L-Mount
  • Here are my (current catalogue) FF lenses:
  • I'm a weedy 71 year old. I can hand-hold the D FA 150-450mm all day. I use it for action, especially aircraft-in-flight. Here is what I used at a recent airshow: K-3ii & D FA 150-450mm; K-1ii & D ...
  • I've registered at SRS in the UK to be alerted to imminent availability of the GR III. Then I'll pre-order it. ...
  • Replied in Pentax 24-70
    A lot depends on what other lenses we have. I also have the D FA* 50mm f/1.4, and that caters for occasions when I want a large aperture. Also, where relevant I take multiple shots at 28mm with the ...
  • Replied in Pentax 24-70
    I have both. I also have the D FA 28-105mm lens. The easiest to give up would be the D FA 24-70mm. (I would hate to give up the D FA 28-105mm lens!)
  • Replied in Pentax 24-70
    For the record, the D FA 15-30mm can also take filters, the same as the Tamron 15-30mm f/2.8. I have a couple of these filters. Part of the kit is the special filter holder. But they are expensive ...
  • Replied in Pentax 24-70
    If the D FA 28-105mm is the only lens I have with me, I take a number of shots and do a panorama merge. Air to ground photos from a helicopter For landscapes and interiors I mostly I use the D FA ...
  • That is a strange statement, given the considerable number of people who post photos taken with Pentax equipment to this forum!
  • It is a function of the number of pixels. There are so many bits per pixel to hold the light-level for that pixel. Complications include: how many bits per pixels? What compression is used? But if ...
  • (I like your example photos!) I find something similar when I re-visit old photos. Especially (but not only) for noise. My choice is Lightroom Classic CC. I have vast numbers of old DNGs in the ...
  • I love your dark-background flower photos. Is that an "insect of the month" in the first one?
  • Precisely! I want to know how many pixels I have to work with in Lightroom for a distant plane captured with a focal length of (say) 450mm. Put crudely: I edit pixels, not square millimeters.
  • This was how I calculated it. Did I make a mistake? What is it? Linear first APS-C is 23.6mm wide. K-3ii has 6016 pixels across. So 254.9 pixels per mm. FF is 36mm wide. K-1ii has 7360 pixels ...
  • For amusement:
  • It is interesting to me! Can I read the writing? Yes! Can I see the rivets? Yes! For aircraft in flight I always do! But it had a lot of merit, see photo below. I used it a lot for action photography.
  • ( By far my most used lens! But 150mm can be too long in some cases). Other potential options: DA* 60-250mm f/4. Not FF , but more coverage than APS-C. (Think "SQUARE"). Now rather old, of course! ...
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Last review Jun 16, 2016
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