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narayan

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    Nikon Wednesday Pic 2010: #49

    in Nikon

    Posted

    <p>Happy Wednesday, everyone. Here is a picture I took in September at Show Low - Pinetop, Arizona. The night sky is very clear there (thanks to very little light pollution), so the Milky Way can be seen clearly :)</p><div>00XokA-309351584.jpg.9edada0d42839dd5b9865febecfd1dad.jpg</div>

    Nikon D3100 sensor performance (DxOMark)

    in Nikon

    Posted

    <p>Jerry - DxOMark's tests are for actual RAW images from the camera:<br /> http://www.dxomark.com/index.php/en/About/What-is-DxOMark/Why-trust-DxOMark<br /> I agree cost is a major factor, but with time better technology is becoming more affordable.</p>

    <p>Vince - It appears that with every iteration (eg. D200 -> D80 -> D3000 or D300 -> D90 -> D5000) Nikon "tweaks" the sensors, even though the core starting components may be very close (in these examples, the Sony 10MP CCD or 12MP CMOS). That would explain the slight differences in performance with the same overall characteristics.<br /> The D3100 is similarly priced and featured as the D5000, and has been compared with it many times. See the previews at photo.net and dpreview:<br /> http://www.photo.net/equipment/nikon/D3100/preview/<br /> http://www.dpreview.com/previews/Nikond3100/</p>

    <p>Leslie - I will be very surprised if the D7000 is as good as the D700 in high ISO performance. Based on preliminary reports, the D7000 performance is somewhere between the D300 and D700 (which are themselves claimed to differ by about a stop).We have to wait till a proper comparison is made. Any improvement is likely due to newer sensor technology.</p>

    <p>Dave - One reason why your experience is different could be due to image processing. Do you shoot jpeg? If so, the in-camera settings could affect the results. DxOMark's tests are for unprocessed RAW images from the camera, which is important for objectively measuring dynamic range, ISO performance, etc. (see the DxO link above).</p>

    <p>Stuart - The objective of such tests is to know better the strengths and limitations of the cameras, so that good decisions can be made for selecting the right tools when taking real pictures.</p>

    <p>Adam - It makes sense to compare sensors that differ in one generation (D3100 vs. D5000/D90) rather than two (D3100 vs. D3000). Like Nish said, the reason for comparing these particular cameras is their similar price and feature set. It has been done before (see the D3100 previews on photo.net and dpreview). The D300 is in a different price/feature range, but yes, image quality comparisons can always be made.</p>

    Nikon D3100 sensor performance (DxOMark)

    in Nikon

    Posted

    <p>DxOMark has recently released their test results for the new Nikon D3100 sensor performance. Here is a comparison with the D5000 and D90 sensors:<br>

    http://www.dxomark.com/index.php/en/Camera-Sensor/Compare-sensors/%28appareil1%29/664|0/%28appareil2%29/587|0/%28appareil3%29/439|0/%28onglet%29/0/%28brand%29/Nikon/%28brand2%29/Nikon/%28brand3%29/Nikon<br>

    Surprisingly, the performance of the new Nikon designed D3100 sensor appears to be worse than that of D5000 and D90! The dynamic range near base/low ISO's is significantly lower for the D3100 sensor, and the tonal range and color sensitivity is also a bit lesser. As far as high ISO noise goes, the difference does not seem to be big (but it is not in favor of the D3100); in particular, we see the usual 6dB drop in SNR from ISO 6400 to 12800...so nothing special there.</p>

    <p>Sensor performance has a direct and major impact on image quality. Given that the D3100 represents a 1-2 yrs of advancement in sensor technology, wasn't more improvement expected? Perhaps there is improvement in image quality, but not measurable in these tests? A direct comparison of images in real shooting conditions can throw more light on this.</p>

    <p>Note that this is only a sensor performance comparison. The cameras still differ in many features (gain extra 2 MP, gain 1080p video, gain AF in video, gain ISO 12800, lose bracketing, lose IR remote, lose fps, lose swivel LCD, etc).</p>

    <p>It will be interesting to see how the new D7000 sensor compares with the D5000 and D90. Your thoughts are welcome.</p>

    Nikon Wednesday Pic 2010: #40

    in Nikon

    Posted

    <p>Happy Wednesday, everyone! I would like to share a favorite image of mine that was winner of the Best in Show in the 2010 McDowell Sonoran Conservancy Photo Contest, <em>Focus on Conservation</em> held in Scottsdale, Arizona. Cheers!</p><div>00XQn2-287789584.jpg.19050377345aa26ae7910300f7f58a19.jpg</div>

    Nikon Wednesday Pic 2010: #37

    in Nikon

    Posted

    <p>Happy Wednesday, everyone! My picture for this week is of star-trails captured in Show Low - Pinetop, Arizona. This location is about a 4 hr drive from Phoenix. The night sky is incredibly clear here, you can see thousands of stars and the Milky Way. I used the interval timer for his picture, 120 30 sec pictures for a total exposure of 1 hr.<br>

    There are so many stars in the sky. Many of these have planets, possibly with life, even intelligent life. Photographers there are capturing star-trails with our sun a single star in it...you are being photographed as you make this picture!!!! Now isn't that a humbling thought?</p><div>00XIO2-281207584.jpg.078a26600049e5fcefa41c5b1c1d06ec.jpg</div>

    Nikon Wednesday Pic 2010: #29

    in Nikon

    Posted

    <p>Great shots, everyone! The summer heat has been intense and is preventing too many walk-around ventures by snap-happy photographers, especially this one :( So I am posting a pic I shot last month.</p><div>00WuBM-261935584.jpg.78e6d4c5d2c68d560b883815e0b8e4c9.jpg</div>
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