JensR

JensR

Lives in United Kingdom Bath, United Kingdom
Works as a Mechanical Engineer
Has a website at http://www.jr-worldwi.de
Joined on Nov 23, 2003
About me: View

JensR's recent activity

  • You are right, Khan!
    I share your assumption: They are lacking the necessary equipment to check the physical dimensions precisely.

  • Commented on Pentax Q7 Review preview

    > I'd really like DPReview et al to be more flexible and compare the same way a potential buyer would compare, not an engineer.

    As an engineer, I politely object to that. That's not how an...

  • > Equivalent FOV is what it's all about. Same F-stop, same exposure.

    Misleading. 42.5mm/1.2 on ISO 200 gives same FOV, same DOF and same number of photons per image&time as 85mm/2.4 on ISO 800....

  • > Equivalent FOV is what it's all about. Same F-stop, same exposure.

    Misleading. On FT 42.5mm/1.2 on ISO 200 gives same FOV, same DOF and same number of photons per image&time as 85mm/2.4 on...

  • > The aperture is a function solely of the focal length and the entrance "pupil" (meaning the diameter of the circle of light you see when you look through the lens from the rear).

    You mean...

  • > The Oly is likely to compare quite well, even vs. FF (could even beat that old 35, at least wide open).

    But the 35/2 on "FF" would be stopped down to 3.5 for a fair comparison. (Fair= same...

  • Commented on Just Posted: Pentax K-30 full review news story

    DA are the APS-C lenses that support full metering and AF. You can mount any of the older K-mount (Pentax bayonet) lenses directly, with more or less limited functionality (K, M, A, KAF, DFA, FA,...

  • Commented on Just Posted: Pentax K-30 full review news story

    DA are the APS-C lenses that support full metering and AF. You can mount any of the older K-mount (Pentax bayonet) lenses directly, with more or less limited functionality (K, M, A, KAF, DFA, FA,...

  • Elaka, noise at same output size is almost independent from sensor resolution. If you look at it at 100%, the pic with more MP will be also larger, so the noise appears worse (per pixel noise vs....

  • I think you mean abomination, not abortion.

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Total messages 17575
Threads started 235
Last post May 16, 2012
Total comments 66
Total likes 28
Last post 3 days ago
Total reviews 0
Total articles 0
Entries 80
Votes cast 125
Last entry Jul 24, 2010
Photos uploaded 1
Last upload Jul 24, 2010