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Dr_Jon

Dr_Jon

Lives in United Kingdom United Kingdom
Joined on Jul 2, 2011

Dr_Jon's recent activity

  • Commented on Canon EOS 7D Mark II Review preview

    I expect you'll rarely if ever notice it in normal photography, but Astronomy pictures, if you have a dark background, could potentially cause problems. I'm not sure I had the best link as I...

  • Commented on Canon EOS 7D Mark II Review preview

    I don't know, the lossy Raws are likely to have issues with star images (in fact they have to). (I really have nothing against the A7s, its 1080p video is excellent, better than my GH4 by some way,...

  • Commented on Canon EOS 7D Mark II Review preview

    I don't know, the lossy Raws are likely to have issues with star images (in fact they have to). (I really have nothing against the A7s, its 1080p video is excellent, better than my GH4 by some way,...

  • Commented on Canon EOS 7D Mark II Review preview

    I don't know, the Sony lossy Raws are likely to have issues with star images (in fact they have to). (I really have nothing against the A7s, its 1080p video is excellent, better than my GH4 by some...

  • Commented on Canon EOS 7D Mark II Review preview

    I don't know, the Sony lossy Raws are likely to have issues with star images (in fact they have to). (I really have nothing against the A7s, its 1080p video is excellent, better than my GH4 by some...

  • Commented on Canon EOS 7D Mark II Review preview

    I don't know, the Sony lossy Raws are likely to have issues with star images (in fact they have to). (I really have nothing against the A7s, its 1080p video is excellent, better than my GH4 by some...

  • Commented on Canon EOS 7D Mark II Review preview

    D7100 sensor DR gets 14.7 and A77ii 14.5, so higher but not much higher.

  • Commented on Canon EOS 7D Mark II Review preview

    BTW as I mentioned elsewhere DXO actually normalises the sensor down to 8MP for their DR, so it isn't the pixel DR (the noise averaging actually boosts it a bit for any camera over 8MP - or a lot...

  • Commented on Canon EOS 7D Mark II Review preview

    BTW as I mentioned elsewhere DXO actually normalises the sensor down to 8MP for their DR graphs, so it isn't the pixel DR (the noise averaging actually boosts it a bit for any camera over 8MP - or...

  • Commented on Canon EOS 7D Mark II Review preview

    That's the DR for the whole camera and includes the effects of the noise added off-sensor (which people like Sony who digitise on-sensor don't get). My comment was about the quality of the sensor...

  • Commented on Canon EOS 7D Mark II Review preview

    That's the DR for the whole camera and includes the effects of the noise added off-sensor (which people like Sony who digitise on-sensor don't get). My comment was about the quality of the sensor...

  • Commented on Canon EOS 7D Mark II Review preview

    That's the DR for the whole camera and includes the effects of the noise added off-sensor (which people like Sony who digitise on-sensor don't get). My comment was about the quality of the sensor...

  • Commented on Canon EOS 7D Mark II Review preview

    Canon's sensors are good in a number of areas, but lose out for low-ISO DR. As long as they feel the other areas are important I suspect they will just carry on as they are. I can't see them using...

  • Commented on Canon EOS 7D Mark II Review preview

    Canon said recently they will always use their own sensors in their DSLRs but for the compact cameras with their short time to market they've mostly used what's available (IIRC the only compacts...

  • Commented on Canon EOS 7D Mark II Review preview

    BTW while I'm at it the way DXO measures DR actually boosts the numbers as they normalise it down to 8MP, so effectively combining multiple pixels into a theoretical one. Then again if you did that...

  • Commented on Canon EOS 7D Mark II Review preview

    Thanks Gabriel. You can see the noise is added after the (off-sensor) ISO amplifier by the way the read noise reduces at higher ISOs. What happens is the signal gets amplified more and more as ISO...

  • Commented on Canon EOS 7D Mark II Review preview

    Like Karl said the DR issue is at low ISO & is added noise due to digitising the data off-sensor. As the noise is added after the ISO amplifier its effect lowers with increasing ISO and is quickly ...

  • I believe the Kodak image sensor division got sold off rather than closed, so it's out there somewhere.

  • Canon have been good in fixing the issues I remember, like flare on early 24-105 lenses where they just fixed them all at no cost. Nikon does have the D600 to live down... which may take a while......

  • Canon have been good in fixing the issues I remember, like flare on early 24-105 lenses and a light leak on the 5DmkIII where they just fixed them all at no cost. Nikon does have the D600 to live...

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