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This is a qualitative comparison of the Canon EOS 7D's RAW and MRAW noise characteristics. Please view the original size before making any judgements.
Because MRAW and SRAW interpolates adjacent pixels before the pixels are written (known as "pixel binning"), the camera can better deal with random noise without losing image detail from postcapture noise reduction.
On the left is a picture taken as a RAW from the 7D with all NR set to 0 viewed at 50%. On the right is a capture taken as an MRAW several seconds later using the same settings. Because RAW is 17.9MP and MRAW is 10.1MP, the RAW appears more zoomed in than the MRAW.
Immediately noticeable is the marked difference in noise on the red channel. In MRAW the camera can average out the noise across multiple red photosensors per pixel, while in RAW the camera must use one red photosensor for multiple pixels, which is why there are brighter red dots. Blue and green noise are also reduced, although it is not so apparent.
In the megapixel wars between the camera makers, this makes a stronger case for increasing pixel density. The photographer can choose to use maximum resolution at the cost of noise performance, or they can lower noise by lowering resolution.
Pixel binning does not completely negate the noise difference between a 18MP APS-C and a 12MP APS-C. Each photosensor is still capturing less light in the 7D than the Nikon D300s, resulting in more overall noise. Native 12MP captures are still better than downsampled 18MP captures in terms of noise. Nonetheless, being able to capture at 18MP is still more convenient, as it allows for tighter crops.
MRAW does not solve the diffraction issue: the 7D still starts getting blurry at around f/7. This is an intrinsic property of photodiode size and microlens performance.
Shooting information:
Canon EOS 7D, EF 24-105mm f/4L IS USM
ISO 6400
1/250 f/4
RAW (left), MRAW (right)
Path towards the east, between Cley and Salthills, Norfolk.
Original camera: Leica Digilux zoom. Postprocessed using Polagen (http://polagen.deviantart.com/).
Original photo taken at the Toronto Zoo and blended with a texture from "ground*floor " using Photoshop.
On our way to Nyksund, about 10 kilometres (6.2 mi) away from Myre, Øksnes (Nordland), Norway. It is located on the northwestern part of the island of Langøya, which is a part of the traditional region of Nordland county, Norway, Vesterålen.
It lies within the Arctic Circle (one of the five major circles of latitude that mark maps of the Earth). In 2012, it is the parallel of latitude that runs 66° 33′ 44″ (or 66.5622°) north of the Equator.
Post processed shots from the Vancouver Strobist photoshoot of the Sweet Soul Burlesque troupe at the Dollhouse Studios.
台北單車臨界量 | Critical Mass Taipei
台灣城市單車聯盟/潘建儒攝影
2014年4月19日
台灣，台北
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Taiwan Urban Bicycle Alliance/funkyruru
April 19th, 2014
Taipei, Taiwan
Shot in the Studio4Fun/BoothPhoto booth at the dclic Photo and Video show. I was invited to use the mini studio for a few hours. I had the pleasure to work with Vincent Lamoureux.
Only 1 light was used, near the model, on the right. The barn doors were adjusted to limit the spill
Model is Maude from Mannequin Direct and we met at the show.
Strobe info: Aurora Mini200 with barn doors on the right at 60% power, aiming slightly down.
Presenting the blue team!
Strobist: Each frame was shot with a tightly snooted Vivitar 285HV over each player's head to look like a spotlight. The images were combined in PS using the Layers->Lighten mode.
This is not mine-it's a touchup for a flickr member. I didn't realise I messed up her arm-I can fix that...
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Philippines License.
So, something new I learned today - manual color correction.
It was done via "Color -> Levels" tool in GIMP.
I think I will review my photo-collection in near future. ((:
On the right side you can see the original post-processed photo without color correction although I adjusted saturation and contrast in Rawtherapee.
More information about photo: flic.kr/p/pxk1bv
* original copyrighted work. do not use without permission
* images, awards and invitations without an ACTUAL comment will be happily deleted
textures by scribblegurl, silviaON and shkamina
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Philippines License.
50s muscle car in central Havana.
Original camera: Panasonic DMC-FX5. Postprocessed using Polagen (http://polagen.deviantart.com/).