A great comparision from chinese forum: dp2m/rx1/film(6x9)

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butfly
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A great comparision from chinese forum: dp2m/rx1/film(6x9)
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Origin post (Chinese) at forum.xitek.com, translated by online service so English is poor.

Foveon X3 sensor has only one purpose, that is, image quality. Sigma also claims to achieve the imaging effect of large and medium-sized film. Since X3 has carried the banner of digital camera closest to film principle, how close is its image quality to real film? In addition, how similar is the digital photo to the real film after being processed by film simulation software? I also want to figure out these two problems myself, so I'll try them myself.

On a more leisurely weekend, three contestants were selected from the traditional marcek, X3 and film camera. The selection criteria are very general. Firstly, the lens used is optimized to the maximum extent for the fuselage, which can represent the highest level of the manufacturer at that time, so as to ensure that there is no lag in optics; secondly, the sensor or film is representative of the same kind, which is not necessarily the best, but should be able to play; thirdly, the focal length should be as close as possible.

The final selection is as follows:

  • Sony RX1: the first full frame card machine, the exclusive 35mm lens, for the sake of image quality, the back group of lens is about to be attached with sensors, and the 24 megapixel represents the medium level of the marcek model. For raw plot, vsco film simulation filter (Kodak Ektar 100) is used to compare with real film in the same scene.
  • Sigma DP2m: in order to avoid the dispute of blood purity, the old X3 is used, which is equivalent to the exclusive lens of 135 frames and 45mm. 14.75 million pixels. Spp is used for drawing directly without any post adjustment of color.
  • Fuji rangefinder GW690: the body is known as "Texas Leica" or "Grand Leica", with a 90mm f3.5 lens, equivalent to 39mm of 135 frames. The 6 x 9 frame represents the larger size of the medium. The Kodak Ektar 100, one of the world's finest color negatives, was selected for 120 film. EPSON V700 flat-panel scanner is self-cleaning and self scanning, and 6400 DPI scanning has 270 million pixels. To be honest, after playing 135 films for a period of time, I was shocked to open this scan result.

The game is actually fair and unfair. There are different scenes and paintings of the contestants. What can be compared? But in fact, it is impossible to make a completely fair comparison. This is like asking pharmacist Huang not to use the finger flick, Luoying magic sword palm, and Hong Qigong's 18 dragon subduing palms. In order to reflect fairness, when Huashan talks about swords, you all use Shaolin Luohan Quan to compete Yeah, it's kind of boring. No. Let's have a hundred flowers in bloom. Let's go.

Manufacturer: Sigma; model: Sigma SD14; aperture: F / 5.6; focal length: 28mm; exposure time: 1 / 1.66666666667; ISO sensitivity: 100

  1. Vision
    1. RX1 complete graph

      Manufacturer: Sony; model: dsc-rx1; aperture: F / 8.0; focal length: 35mm; exposure time: 1 / 320; ISO sensitivity: 100
    2. GW690 (F8, 1 / 250)

    3. DP2m

      Manufacturer: Sigma; model: Sigma DP2 Merrill; aperture: F / 8.0; focal length: 30mm; exposure time: 1 / 200; ISO sensitivity: 100
    4. Comparison of reduced drawings to the same size

      The gap width between RX1 roof tiles is wider. There's a sharp contrast in film and X3. Leaves can reflect their own characteristics. The film simulation used by RX1 is similar to the real film. Of course, the film scanning is also equivalent to giving a certain amount of later stage. What's the difference DP2m is not balanced with white, and the color is not changed temporarily.
  2. Close range
    1. RX1 whole graph

      Manufacturer: Sony; model: dsc-rx1; aperture: F / 8.0; focal length: 35mm; exposure time: 1 / 320; ISO sensitivity: 100marcek's detailed performance is also very good
    2. Full view of GW690 film (F8, 1 / 250)

    3. DP2m

      Manufacturer: Sigma; model: Sigma DP2 Merrill; aperture: F / 8.0; focal length: 30mm; exposure time: 1 / 320; ISO sensitivity: 100
    4. Comparison of reduced drawings to the same size

      The performance of RX1 is also very good. It's just a line in the middle of the roof tile in the upper right corner, and the transition is a little fuzzy.
  3. Vision
    1. RX1 whole graph

      Manufacturer: Sony; model: dsc-rx1; aperture: F / 8.0; focal length: 35mm; exposure time: 1 / 250; ISO sensitivity: 100
    2. Full view of GW690 film (F11, 1 / 125)

    3. DP2m

      Manufacturer: Sigma; model: Sigma DP2 Merrill; aperture: F / 8.0; focal length: 30mm; exposure time: 1 / 160; ISO sensitivity: 100
    4. Comparison of reduced drawings to the same size

      The solar glass of RX1 roof is almost invisible, and the railing on the right side is pasted into a ball. I thought it was a matter of focusing. I tried a few of them and found the details of the long distance. This is what it looks like. DP2m resolution, that's really good.
    5. GW690 film details

      Rangefinder focusing, can't be sure how accurate it is, that's it. After zooming in, it is still quite impressive, with a soft and detailed feeling.
  4. Buildings in cloudy days
    1. RX1 whole graph

      Manufacturer: Sony; model: dsc-rx1; aperture: F / 8.0; focal length: 35mm; exposure time: 1 / 320; ISO sensitivity: 100
    2. Full view of GW690 film (F8, 1 / 250)

    3. DP2m

      Manufacturer: Sigma; model: Sigma DP2 Merrill; aperture: F / 8.0; focal length: 30mm; exposure time: 1 / 200; ISO sensitivity: 100
    4. Comparison of reduced drawings to the same size

    5. Enlarged details
      1. GW690 film, clear text.

      2. RX1, pixel limit, that's it.

        Manufacturer: Sony; model: dsc-rx1; aperture: F / 8.0; focal length: 35mm; exposure time: 1 / 320; ISO sensitivity: 100
      3. DP2m, very sharp, but also limited by pixels.

        Manufacturer: Sigma; model: Sigma DP2 Merrill; aperture: F / 8.0; focal length: 30mm; exposure time: 1 / 200; ISO sensitivity: 100
  5. Street shot with complex content
    1. RX1 whole graph

      Manufacturer: Sony; model: dsc-rx1; aperture: F / 8.0; focal length: 35mm; exposure time: 1 / 320; ISO sensitivity: 100
    2. Full picture of GW690 film (F16, 1 / 60)

    3. DP2m

      Manufacturer: Sigma; model: Sigma DP2 Merrill; aperture: F / 8.0; focal length: 30mm; exposure time: 1 / 160; ISO sensitivity: 100
    4. Comparison of reduced drawings to the same size

      The railings and wall tiles of the house can reflect their own characteristics.
  6. Summary:
    1.  
      • DP2m has very high sharpness and micro contrast. I think it's not too much to say that it reaches or exceeds the image quality of medium frame film. After the adjustment of color, sometimes there will be extremely amazing performance. However, there are some deficiencies in highlight performance and dark details (this comparison does not show too much). Although surround exposure can solve this problem greatly, one of the biggest advantages of the old X3 is a single photo (excluding moving objects), isn't it. If we can produce full or medium X3 in the future, increase the single pixel area and the number of pixels, ah Wipe my mouth first.
      • RX1 is a lot worse at shooting long-range details, but then again, if you don't compare with each other, who knows what you're missing in detail. On the whole, marcek has high tolerance, good sense, and stronger practicability. What's more, details can be enhanced by crazy Biao pixels. In addition, with the folk martial arts of shaking, it's not unreasonable to have the widest application. If you don't zoom in to see the details, the film simulation is still a bit of film charm, but sometimes it depends on the shooting scene.
      • Compared with the first two, the GW690 is a big brick with durable leather, no light metering, no battery and manual operation. It costs money and energy to play with film In particular, 6 x 9 paintings, a volume of 120 can only take 8 Why are things still in the market? Because it's really fun. Shooting, developing, scanning, each step is solemn and happy. Whether it's metaphysics or not, film just looks comfortable. However, if you want to play, you'd better start from the middle picture. 135 indeed It's a little small.
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that all knowledge was but remembrance,
and that all novelty is but oblivion.

 butfly's gear list:butfly's gear list
Sigma DP1 Merrill Sigma DP2 Merrill Sigma DP3 Merrill Sony Alpha NEX-7 Nikon 1 V1 +9 more
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