The Sigma DP2 Merrill is an update to the DP2x
with a new body and the flagship APS-C foveon sensor from the SD1 / Merrill
Digital SLR, although when comparing the DP2x and the new DP2 Merrill, the camera has been redesigned with a new lens, that matches the specification of the Sigma 30mm f/2.8 mirrorless lens
and in some ways could be considered the closest Sigma has come to releasing a mirrorless camera. The two new Sigma DPx Merrill cameras now feature f/2.8 lenses, an improvement over the DP1's f/4.0 lens.
Updated 14/11/2012 with full production model.
Sigma DP2 Merrill Features
The Sigma DP2 Merrill uses the same 48 megapixel APS-C Foveon sensor as the SD1 Merrill, with a Foveon X3 Direct Image Sensor, with each pixel recording Red, Green and Blue, this is designed to be more colour accurate than the more usual Bayer colour filter
sensor used on virtually every other camera (excluding the Fujifilm X-Pro1
Foveon sensor vs Bayer sensor:
Image courtesy Sigma
Due to the camera not featuring a Bayer sensor, the camera does not need a "Low Pass Anti Aliasing Filter" this should mean higher resolution being passed to the sensor, plus the Foveon sensor should be able to avoid capturing Moiré - this should benefit fashion photography or anything involving very fine textures.
The sensor is a 15.6 megapixel sensor with Red, Green, Blue (RGB) at every pixel, Sigma say that this makes it equivalent to a 30 megapixel (Bayer) sensor. However the camera outputs an image size of 4607x3400 which is a 15.6 megapixel image.
- 48 megapixel Foveon APS-C X3 Direct Image CMOS sensor
- Effective Pixels: 46MP （4,800×3,200×3）
- 30mm f/2.8 lens equivalent to 45mm
- 3 inch 920k dot screen
- VGA, 30fps video
- ISO: AUTO (ISO200～ISO800) ISO100 - 6400
- Manual / Aperture / Shutter modes
- Flash hot-shoe
Sigma DP2 Merrill Handling
- The camera has a metal body, with a mode button on top instead of a dial. There is also a focus ring surrounding the lens, and the camera lacks a built in flash. The command dial surrounds the shutter release, and on the back the 4 way controller can be used in conjunction with the QS (Quick set) button. In size: it's roughly the same size as the Olympus PEN E-P3
(a medium sized compact mirrorless camera).
Sigma cameras ship with Sigma Photo Pro, RAW processing software specifically designed for processing Foveon X3F raw files. This software is sluggish, particularly if you want to view the images at full size, and not ideal for quick processing, although it does have a number of ways to alter: exposure, contrast, shadow, highlight, saturation, sharpness, X3 fill light, white balance, colour mode, noise reduction and lens correction. It's best to use the software for conversion to a different format for further processing in another application if desired. You can save the image as a JPEG or 8/16 bit TIFF. RAW files are 41 to 55 megabytes in size.
– The menu system has a clearly laid out set of options, with record, playback and setup menu screens colour coded blue, red and yellow respectively. QS button gives quick access to options, although it's fairly easy to accidentally set options. QS screens, of which there are two, can be customised so you can get quick access to your favourite settings. Further picture options include settings for contrast, sharpness, saturation.
- Currently CIPA test results aren't listed by Sigma, however battery life was noticeably low, and the test camera came with two batteries in the box. We were able to take 135 shots before the battery went flat. We are hoping that this is due to the camera being pre-production, and that better battery life will be available with the final release version. The camera can get quite warm with continued use.
- We took a number of shots to test the camera's responsiveness, from switch on to first photo, shot to shot, focusing speed etc. We take a number of shots and then use the average to ensure accurate and consistent tests, making it easy to compare with other cameras.
|Sigma DP2 Merrill
|Wide - Focus / Shutter Response
|Full zoom - Focus / Shutter Response
|Switch on Time to Taking a Photo
|Shot to Shot without Flash
|Shot to Shot with Flash
(shots before slow down)
|4fps (7 shots)
||7fps (speed priority mode, 15 shots)
|Continuous Shooting - Flash
|Continuous Shooting - RAW
||4fps (7 shots)
||4fps (13 shots)
The final version of the camera improves over the pre-production version we tested with slightly quicker focus, and switch on time. The camera will take 7 photos, then write to card, this can be quite slow, particularly when shooting RAW taking 1 minute 10 seconds to clear.
Sigma DP2 Merrill Performance
Additional sample photos and product shots are available in the Equipment Database
, where you can add your own review, photos and product ratings.
Sigma DP2 Merrill Sample Photos
- For every photo we have shown the JPEG image straight from the camera, and on the right the images converted from RAW. The "gate" JPEG image shows the sky completely overexposed, and using Sigma Photo Pro and the X3 fill light tool has boosted the shadows, as well as brought back the colour in the sky. We have used the "Airstream" photo and used the RAW file to see how much we can recover in the highlights, and there is an impressive amount of dynamic range when working with the RAW files.
Sigma DP2 Merrill Lens test images
- Detail is extremely impressive, and we have done little when converting the RAW files. With the Sigma DP2 Merrill the best JPEG results are when shooting outdoors in bright sunny weather, although using the RAW file better results were available when changing the white balance setting from AUTO and choosing the appropriate option, such as Sunlight. We also adjusted the exposure slightly, boosted the shadows a little, and this has improved colour saturation. There is some purple fringing visible in the shot of the trees above, however the image converted from RAW shows slightly less, as well as showing much better colour. The lens performs extremely well although macro performance isn't a strong point, as the closest focusing distance is 28cm.
Sigma DP2 Merrill ISO test images
ISO Noise Performance
- Noise is low at ISO100 and ISO200. Noise at ISO400 is generally quite low, although where it is visible it is reminiscent of film grain, and quite different to noise from other cameras. Noise becomes more noticeable at ISO800, although detail is still very good. Noise is quite intrusive (with corned beef) at ISO1600, which will be particularly unpleasant in skin tones although the noise does appear to affect some colours more than others, and detail suffers. Colour is lost at ISO3200 and ISO6400 - these highest settings are best avoided. There is further control over noise by adjusting the level of noise reduction in Sigma Photo Pro when converting the RAW files.
Sigma DP2 Merrill White-balance test images
White Balance Performance
- White balance results when using most settings are poor shooting JPEG images, although auto white balance (AWB) results under fluorescent results are reasonable and white balance can easily be corrected when shooting RAW. Due to the poor white balance performance indoors, and less than perfect white balance performance outdoors, it is essential to shoot RAW with this camera. Detail is stunning, with more detail discernable in these shots that shots from the 41 megapixel Nokia PureView 808
(see the CD labels / logos as well as the text on the Kodak T400 film box), also it shows an impressive level of detail compared to the 36.3 megapixel Nikon D800 / D800E
Sigma DP2 Merrill Other sample images
A number of other sample photos can be found here, showing both the JPEG results straight from the camera, as well as the images converted from RAW to JPEG, using Sigma Photo Pro 5.3.
Sigma DP2 Merrill Digital filters
Digital Filters -
The camera has a number of colour modes available in the camera, or they can be applied to the RAW file with Sigma Photo Pro, although black and white / sepia are only available when shooting JPEG photos on the camera.
- The DP2 Merrill features VGA video recording at 30fps with mono sound - there are very few options (NTSC or PAL), and the video suffers from the "jello effect" if the camera is moved from left to right quickly.
Value For Money
There are a number of serious compact cameras, however a very small number feature an APS-C sized sensor, details can be found below:
There are a number of accessories available for the DP2 Merrill, including a lens hood, close up filter
, optical viewfinder and GN14 flash. Further details can be found on Sigma's website
You'll also need to buy a memory card
and a case or bag to keep your camera safe and protected - have a look at our complete guide to camera bags
Sigma DP2 Merrill Verdict
The Sigma DP1 and DP2 Merrill is in a group of a limited number of compact cameras with an APS-C sized sensor and a fixed lens, along with the Leica X2 and the Ricoh GXR APS-C cameras. This niche is rarer still due to the use of a Foveon sensor which promises the ultimate in image quality, although this is when shooting RAW. The Foveon sensor is capable of resolving excellent - to stunning - levels of detail far beyond what you would usually expect from 15 megapixel images.
While the body redesign has added a number of useful and needed updates, there are still a number of further issues, namely the camera is larger than many mirrorless cameras, the cost is higher than mirrorless cameras, and the battery life and speed of the camera are worse than competitors. However, if you are a fan of the Foveon colour and extremely high levels of detail at the pixel level, then these are things you may be able to work around, for example with a number of spare batteries.
It's still the case that to get the best out of Foveon sensor cameras you are required to shoot RAW and convert each one in Sigma Photo Pro software. Even when left on Auto settings this produces better results than the camera for white balance and detail. Outdoors this isn't as big an issue, however considering the whole benefit of the Foveon sensor is supposed to be true colour rendition, it's a real shame the JPEG photos come out so poor.
The Sigma DP2 Merrill has an excellent lens and sensor and is capable of producing stunning images with excellent colour and outstanding levels of detail. However to acheive this you have to shoot RAW and process each image in Sigma Photo Pro, making it quite time consuming.
Sigma DP2 Merrill Pros
Clear menu system
New high resolution screen
Excellent image quality when shooting RAW
Impressive levels of detail
Robust metal body
Sigma DP2 Merrill Cons
Large RAW files (45 to 55mb each)
Poor JPEG results
Poor auto white balance results
Sigma Photo Pro performance
Poor battery life
|VALUE FOR MONEY
Sigma DP2 Merrill Specifications
|Sensor Type||Foveon X3 CMOS|
|Sensor Size (width)||23.5mm|
|Sensor Size (height)||15.7mm|
|Screen resolution||920,000 dots|
|Shutter speeds shortest||1/2000sec|
|Shutter speeds longest||30sec|
- Centre-weighted - Average
- ESP Light Metering
|ISO sensitivity||100 - 6400|
|Exposure Comp||No Data|
|Optical Zoom with Video||No|
|Battery Type||LiĀion Battery Pack BP-41,|
|Battery Life (CIPA rating)||No Data|
|Box Contents||No Data|
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