The megapixel debate revisted

Discussion in 'Photography Forums' started by Yandros, May 8, 2007.

  1. Yandros

    Yandros
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    ...or even 'revisited' *sigh*

    I've just come across this post over on dpreview...

    http://forums.dpreview.com/forums/readflat.asp?forum=1034&thread=23142645

    Yet more evidence stacking up that more megapixels are a con. So a D40 and D80 print are impossible to tell apart, even at A3 :eek:

    And yet they're now making compact cameras with 12MP. I particularly like the fact that the Sony DSC-W200 boasts "High Definition output for displaying still images on a HD TV", but doesn't mention of course that this will be at the glorious resolution of... TWO MEGAPIXELS!!!!:rotfl: :rotfl: :rotfl:
     
  2. Tobers

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    And what about the Sigma SD14 with it's 4.7 megapixel sensor that delivers stunningly clear images. The new Foveon sensor looks pretty sensational. Review in this month's Digital Camera mag. Impressive.
     
  3. Liquid101

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    Interesting read, but i'm just not sure about it.

    It's all a little convienent really - a friend who works at a camera 'store' who would make 40 A 4 prints and 6 A3's for just for a laugh?

    Either way, It doesn't surprise me in the least that they could tell no difference at A4 - at A3 I suspect a few of us would have a good chance - depends on the printer.

    Anyway, The only reason I would get a D80 over my D50 is for the improved viewfinder, commander flash mode, extra dial, lots of other reasons, none of which is the pixel count. I've always been happy with 6 - it does what I need, personally I don't need 10.
     
  4. jenufa

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    I think this proves Canon are better than Nikon:rotfl:
     
  5. senu

    senu
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    That is interesting,
    It is often said that 6,8, 10 Mp the Differences will show up only at 100% crops at sizes bigger than A3
    Also in a recent Issue of Amateur Photographer, (7 April) There was an interesting comparison of 4 Canon digital compacts from 6,7, 8 and 10 Mp
    While there was a huge jump from 1mp to 2Mp .. and 2-6, it became much less between 6 and 10
    Also when the 6,7, and 8Mp images were "extrapolated to resolution of a 10Mp (even at 300ppi), it was impossible to distinguish them from the native 10Mp Image
    There is also the issue of per pixel sharpness which some of the better made lower res cameras seem to have

    Regarding the dp review article though,I think it just as much shows how good the "out of the box" performance of the D40 is or how good the printers are
     
  6. senu

    senu
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    Shhh....:oops:

    Not quite, the 400D at 10Mp does lovely pics ...but it wouldn't tempt a happy 30D user..;)
     
  7. jenufa

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    LOL :)
     
  8. Keyman

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    Wouldn't a higher pixel picture allows better after cropping (pointed out by another member to me).

    I wished I got the 400d over the 350d now for a few reasons......The later models always claim more features and maybe better focusing,
     
  9. RobDickinson

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    Yeah extra pixels allow more croping (depending on lens resolution etc), but 8 to 10 mp isnt that big a step up, and file size is noticably larger.

    The 400d manages the increase though without compromising on noise or speed, the difference on resultant images between the 300-350-400 unless heavily croped/blown up are marginal.

    Your not missing much from the 400d mate.
     
  10. senu

    senu
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    Very true use the 350D with confidence.

    I think Canons CMOS+Digic combo are generally Low light friendly but I found compared to the 350D that the 400D was a little noisier and had to use DPPs noise reduction (very effective) a fair bit on the 800 /1600 ISO images to get them right

    It is also faster but because its file sizes are larger it doesn't feel that much faster in practice
    That bright 2.5" LCD screen is lovely though:cool:!
     
  11. Yandros

    Yandros
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    Yes, it does allow more cropping, but only if the optics and camera technique matches the megapixels. If the 10MP image isn't up to much, cropping it is a waste of time. Unsteady hands and a poor lens will often cause you problems before the pixels will.
     
  12. senu

    senu
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    The AP mag ( 7th April) on the very same subject, worth a read, Ithink

    [​IMG]
     
  13. ScottBT

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    This weeks Amateur Photographer Mag doesn't rate the SD14 very highly.

    Price is far to high.:eek:

    I went for the D40 over the D40x as I didn't think the extra 4mp would make a difference unless I was printing above A3.
     
  14. Tobers

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    Yep - high price for the build quality etc, but the sensor performance looks pretty stunning. Watch out for more of the same - wonder if Canon & Nikon can produce a similar sensor.

    For those that dont know, the Foveon sensor in the Sigma has 3 different layers, one for each colour, whereas the typical digicam sensors have all 3 colours on one layer in a mosaic pattern. With the mosiac method, you immediately lose definition and the camera has to interpolate between the pixels. With the Foveon sensor, a single pixel in the RGB stack "sees" exactly the same thing so no colour bleeding.
     

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