DonSC

DonSC

Joined on Sep 25, 2013

DonSC's recent activity

  • That would be the point. If you have the same focal length lens you end up spreading the same number of pixels over four times the area, giving you considerably less detail. This is why cams with ...
  • I think most people care about FoV, the number of pixels on the subject, and shutter speed. In these areas the comparison is valid. I'd add AF speed and accuracy as well. I agree that if these are ...
  • Replied in Gees
    When last I checked, the following is true: 600 X 1 = 300 X 2 Helps to understand what is being said.
  • Replied in Funny
    Got it. Sorry for not being clearer about my confusion. :-)
  • So far the Oly lenses are roughly the same size as the same lenses from Canon or Nikon and I doubt these will be any different. The 300mm f/4 should be 1200 grams or less. I can't see getting ...
  • A sensor half the size lets you use a lens with a focal length half as long. So it's the difference between a 300mm f/2.8 and a 150mm f/2.8. The size of the image circle per se doesn't make the ...
  • Coming from shooting Nikon and then Canon, I think the practical equivalents are usually 1/2 the focal length. IOW a m43 300mm f/4 gives you more or less what you'd get in a FF 600mm f/4. The AF ...
  • Replied in Funny
    But you're saying it's not used with Oly lenses, so it's not working and can't be part of the results you're reporting. Why mention it if it's not even part of the process? Moreover, if the AF ...
  • It's probably most useful for either acquiring focus when you are having trouble locating a subject or keeping the subject centered during the black outs when shooting higher fps.
  • Congrats on your purchase. The 40-150mm Pro is a great lens. I'm sure you'll take many fantastic shots.
  • Replied in Funny
    So the GH4 is not using DFD. Given that the E-M1 uses PDAF, for your results to be generally true the GH4 would have to have a super CDAF which is faster than a PDAF system. That seems highly ...
  • Replied in Funny
    It wouldn't prove this. AFAIK the GH4 isn't using DFD when the Oly 40-150mm f/2.8 is attached. DFD only works with Panny lenses not Oly lenses. With the Oly 40-150 Pro the GH4 would be using ...
  • I agree it works the same way as S-AF. Or at least that's my impression. Disagree you don't have a target rich environment! I think the trick with C-AF is to not overthink it. You can get in focus ...
  • Replied in Funny
    I'm thinking that what you've said is that a software solution is better than a hardware solution, except when the software solution is based on PDAF hardware. Not sure why the GH4 would have ...
  • The independence is a problem not an advantage. Because they are independent the two sensors have to be perfectly calibrated. Not easy to do, especially with changing temperatures and so forth. ...
  • I think you should get the TC, it does give you more reach, but my impression is that the focus is faster without it. For static subjects not a big deal, but for BIFs you'll notice it. I started ...
  • This agenda laden posting is just tiresome. I didn't in fact say I knew about Nikon lenses, what I said was that I knew about the Canon lenses AND IF the Nikon lenses had that level of quality ...
  • I don't know about Nikon lenses, but I can tell you that you always wanted to stop down a Canon lens. You might not be able to but for IQ you wanted to. I also don't think any Canon lens I ever ...
  • Fair point though I did have this caveat in the comment. But Nikon is not exactly tops when it comes to lenses so I'd have to say that I'll have to be convinced.
  • I'd probably would have been OK if it were just the bokeh. But it was the sharpness, micro contrast, and details as well. Just wasn't very good. And these were expensive lenses.
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