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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
This picture started out as a photo of the woods (again) from my apartment...experimenting with colors, and then , I said to myself, I must be looking at as something in those woods?. I think the girl was a photoshop tutorial and she had the colors, so then the experiment went on and on, until tonight I said, I am through with this!!!!! And posted it just to make sure I didn't try to experiment anymore....
I shot the photos in this series with the Pentax MX-1's internal HDR program (setting "1") – so it's not actually a single shot, but only a single output file. However, with the RAW+ option, so I got a .JPG and a .DNG to post-process. What you see is the .JPG as it came out of the camera, compared to the .DNG that I post-processed in Lightroom 5.
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)
Old School like me...a child of the 1970's...1970 to be exact...[View On White] & [View On Black]
Path towards the east, between Cley and Salthills, Norfolk.
Original camera: Leica Digilux zoom. Postprocessed using Polagen (http://polagen.deviantart.com/).
this is what my hair looks like today.
if my hair-day dictated my career for the day, today would be "rockstar day". or angry lion day.
i really love this shot though. i was tempted to save it for SPT. but i love it too much to hide for a day =P
The lovely illona www.flickr.com/photos/illonahaus/ did this for me. And while she says it didnt turn out to well, I like it myself.
The original in large farm1.static.flickr.com/200/505102339_dae851f163_b.jpg
Original photo taken at the Toronto Zoo and blended with a texture from "ground*floor " using Photoshop.
Post processed shots from the Vancouver Strobist photoshoot of the Sweet Soul Burlesque troupe at the Dollhouse Studios.
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.
Copper motor winding's, taken using the Toy Camera setting on the Canon SX220 HS, which gives it a lomo lo-fi look
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...
We didn't lose out to the infamous Seagulls at St.Ives, maybe they were too busy laughing at us eating icecream in the rain?
Taken with a Carl Zeiss Jena 35mm 2.4 Flektogon on a Canon 450D
post-processed: bw done entirely in ufraw, a bit of drawing done in gimp.
yes, this is the same photo: www.flickr.com/photos/73003003@N07/7904903874/in/photostream
theme: Philip Glass - Symphony N.9
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