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  • Posted on: Voigtlander 10.5mm f/0.95 Nokton MFT Lens Review

    The Rokinon 10mm f/2.8 lens is excellent and a far less expensive option, although I had to buy three (and return two) to get one that was completely free from decentering defects, which was critical for my application. I'm using the Rokinon 10mm with Nikon mount on a Kipon shift adapter with my Olympus EM5 MkII, and it's quite capable due to its coverage designed for APS-C format (up to 5mm vertical movement in landscape and 3.5mm in portrait orientation). With the newer model of Kipon shift adapter (10mm max. shift, no extending screw), there's no limitation on the shift rotation on my camera (no interference with viewfinder bulge or grip), but I have to use a grip plate and battery grip under the camera for tripod work (not with a ball head, though). I shaved off the built-in hood to enable more use of the shift, especially with the lens shifted on a diagonal for correction of both vertical and horizontal convergence. Distortion correction is challenging, however.
    • 18 Feb 2019 6:18AM
  • Posted on: Olympus M.Zuiko 25mm f/1.2 PRO Lens Review

    A lot of positives here, but I find the CA unacceptably high. Look at the Village Architecture sample -- the roof tiles have obvious color fringing. I see this in other samples, as well. This practice of designing lenses with optical defects to be corrected with software has limits that are being exceeded in the interest of compactness. The earlier Oly 14-35mm f/2 SHG lens has about half the amount of CA (and it's a zoom lens, yet). Unless this is due to the use of a non-Oly body, for me it's no sale. I would be content with a well-corrected 25mm f/1.4 prime of similar pro construction, size, and price.
    • 12 Oct 2017 10:06PM
  • Posted on: Leica DG Summilux 12mm f/1.4 ASPH Review

    The performance of this lens appears to be similar to the earlier Four Thirds Panasonic Leica 25mm Summilux D f/1.4, which had outstanding center sharpness but not quite so good edges and which favored wide apertures. That lens is available used for about $800. IMO currently the best alternatives for wider lenses are the Olympus Zuiko 7-14mm f/4 and Panasonic 7-14mm f/4 -- not as fast but generally fine performance, although not as compact. I'm waiting to see the fast wide primes Olympus will be introducing soon.
    • 15 Jun 2016 2:06PM
  • Posted on: Pentax HD PENTAX-D FA 15-30mm F2.8 ED SDM WR Review

    Correction: "The lens hood is a large plastic push-on design that fits well and is unlikely to fall off in use." Should say: "The lens cap..."
    • 27 May 2016 5:15AM
  • Posted on: 14 Essential Tips For A Great Photo Walk

    I find that riding a bicycle gives me greater range but still allows me to identify interesting scenes to stop and shoot. It's also possible to carry more gear without too much strain.
    • 10 May 2016 9:58PM
  • Posted on: Voigtlander 40mm f/2 Ultron SL II Review

    This lens was recommended by Yannick Khong because of its extraordinary 3-D "pop" and micro-contrast, due in part to its low lens element count. I definitely see that in the sample pictures, which are very well done BTW. I did some comparisons of my modern zoom lenses against mid-to late-70's Nikkor prime lenses, and I found the latter to be superior in that respect. This has led me to re-prioritize my criteria for lens selection. Judging from the samples here and elsewhere, which show amazing depth rendition and realism, I'd say this Voigtlander is a very special lens!
    • 27 Apr 2016 3:42AM
  • Posted on: Beginner's Guide To Filters

    Also want to point out the Reverse ND Grad filters which are useful to tame sunrise or sunset highlights with flat horizons.
    • 26 Apr 2016 7:18AM
  • Posted on: Olympus M.Zuiko Digital ED 7-14mm f/2.8 PRO Review

    Correction needed in the "Performance" section: starts with "At 12mm..." but it should read "At 7mm".
    • 15 Dec 2015 4:43AM
  • Posted on: Sigma dp0 Quattro Review

    This could be an ideal compact single focal length architectural camera, just the right angle of view for most scenes. The sharpness and micro contrast appear to be superb, although I suspect one must be very careful to avoid highlight blowout and then after post correction noise in the shadows could be a problem. Color balance seems a bit yellowish, although that is easily corrected.

    I am curious as to how well the optical LCD viewfinder attachment works in the field compared to the hot shoe optical viewfinder attachment. I rather like the idea of handing a little scope to an architect during the shoot to show what we can get in the shot, because often they expect miraculous super wide views but later complain of excessive volume deformation.

    I learned from another photographer that these Quattro camera lenses have leaf shutters, so I guess flash sync is possible at any speed. That may be significant for some purposes such as balancing interior lighting. It also may be one reason for the super keen sharpness (no shutter shock).

    It would be nice to see some LCD screen shots showing the info provided; and one with the left side port door open. A sample shot for lens flare would also be useful, since this flaw often afflicts wide lens IQ. Benchmark RAW processing time with computer specs would also be useful.

    Thanks for a good initial review.
    • 27 Nov 2015 5:59PM
  • Posted on: Samyang 10mm f/2.8 ED AS NCS CS Lens Review

    Compatibility indicates "Olympus Four Thirds" which I presume should be "Micro Four Thirds"
    • 2 Sep 2015 7:06AM
  • Posted on: Panasonic Lumix GX8 Full Review

    I see a lack of critical sharpness in the samples. The 'loud' shutter might be suspect. It looks to me like vertical shake, or maybe it's a mediocre lens. I would love to download RAW files shot with the 42.5mm Nocticron lens with the GX8 on a tripod, to see just how good this baby is, but for now these pics do not rival what I've seen from Olympus's top cams.
    • 24 Jul 2015 5:51PM
  • Posted on: Metabones Speed Booster Review

    I wonder if it would be possible to use a Sigma 8-16mm f/4.5-5.6 UWA lens on the Metabones Speedbooster XL 0.64x to convert it to an equivalent 10.24mm super-duper UWA on a MFT body (only certain bodies will work with this adapter) -- that would be even wider than the new Canon 11-24mm designed for FF cameras. I'm guessing this would require cutting off the lenshood petals, something to consider along with available image circle when adapting any UWA lens in this way.
    • 20 Jul 2015 11:10PM
  • Posted on: HOYA Cokin IR Filters Review

    One method (starting with an RGB image) -- in the Photoshop dialog "Channel Mixer" select Monochrome, Preset pull-down: select Black & White Infrared.
    • 8 Jul 2015 7:56PM
  • Posted on: Olympus M.Zuiko 7-14mm f/2.8 PRO Hands-On

    I would like to know what the lens cap is like, how it fits and how well it stays on the hood. Why is that not shown in the photos? I used to own the original Olympus four-thirds 7-14mm lens, which had a heavy metal cap that would easily fall off.
    • 11 Feb 2015 7:13AM

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