Peter Kwok

Peter Kwok

Lives in United States Los Angeles, United States
Works as a Engineer
Joined on Mar 8, 2002
About me:

Love photography, not just gears

Peter Kwok's recent activity

  • There is an internal (non-removable) "date/time battery" that keeps your date, language, etc while you swap the main LP-E17 rechargeable battery. If you store your camera with the main battery ...
  • Like you, I also downsized.  My 5DS, 16-35 f4, 24-105, 70-200 f4 IS, 100-400 and Tamron 45mm f1.8 are only used for special events. I thought I will use some of my FF lens with an adapter. But I ...
  • Since they already have a 35mm f1.8, I think 24mm has higher priority to fill up the line.
  • The original M is much better built with metal exterior, and its shutter (as stated by another poster) sounds much crisper. However, originally used on the 80D, the 24M sensor used on the M5, M6 & ...
  • A piece of gear may work during rain. But its electronic contacts may corrode after a few days.  The first thing to go wrong is the wipe that reports focal length of zoom lens. I hope your ...
  • Companies, especially Canon, file lots of patents but only bring few of them to market.  Cross AF is needed to support any new mirrorless pro body dedicated to sports (think 2020 Tokyo Olympics). O ...
  • Ironically, this type of distortion is worst on good rectilinear lens with no barrel distortion. You can make the face less stretched by adding barrel distortion.  However, the straight lines of ...
  • I thought Toshiba is out of the foundry business. But this is the largest high pin count part in all the photos.  Nevertheless, Canon needs a faster processor to keep up with Sony for eye tracking AF.
  • Of course, Canon wants to improve DR, but the question is, can they?  Unlike Sony (or Panasonic, Samsung), Canon is a camera and office equipment company, not a semiconductor company. ...
  • At this stage, Canon has recovered the cost of developing these cameras. The price reflects the profit margin over the manufacturing cost.  80D with its extra mirror and prism (not to mention a ...
  • Replied in That is expected
    Until someone implement global shutter, all brands of cameras with "silence" electronic shutter will show this type of banding under flickering lights. Since the shutter "rolls" as fast as the ...
  • Look at the elements when the lens is zoom out to 100mm.  The rear element is very close to the sensor plane. It is also large. This design is optimized for mirrorless. RF 100-400 at 100
  • Canon DPAF sensors divide each pixel into left and right looking halves. Out of focus vertical lines will be shifted to the left and right.  To focus on horizontal lines, you need pixel halves ...
  • The short flange and large mount diameter give more flexibility to the optical designers. Canon has a graphic that shows the difference between the EF 35mm f2 IS and the RF 35mm 1.8, with the RF ...
  • When Sony bought Konica/Minolta, they let former Minolta engineers run the combined camera division. This was very rare. Typically, Sony forced the merged personnel to assimilate into the collective. ...
  • Compared to the barely visible metal mount, the lens look short and fat.  It probably extends as it zooms, like the 70-300L and 100-400L. Hopefully, it will be lighter than the EF version.  I wish ...
  • Canon's "Camera Connect" app let you change "Camera settings", which includes setting date/time from the phone's clock. Due to delays over the connection, it may be a second slower than your phone. ...
  • Replied in Any native lens?
    Without a "third" position that removes the speed booster completely, does that mean Canon has no plan for any native lens? It only uses EF lens in front of the booster optics.
  • I pair it with the 70-200 f4 IS. They complement each other very well. Street of Copenhagen Peterhof Palace in St. Petersburg St. Petersburg metro station Copenhagen harbor Please click here to see ...
  • I agree with most posters that there is no compelling reason for the 2 new 70-200mm lens, aside from asking for more $$$. This is especially true for the 2.8 MkIII, with no new optical formula, ...
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Total messages 2433
Threads started 34
Last post 2 days ago
Total comments 19
Total likes 40
Last post 10 months ago
Total reviews 5
Last review Apr 21, 2017
Entries 10
Votes cast 3
Last entry May 8, 2012
Photos uploaded 6
Last upload May 8, 2012