A sensor is the digital camera's equivalent to film. It contains millions of tiny light-detecting areas called photosites, which convert light into an electric charge. After exposing the sensor to light, this charge is read from each pixel and converted into a digital image.
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Why is on sensor PDAF drastically slower than traditional PDAF?
Why is on sensor PDAF drastically slower than traditional PDAF? I assume the technology is the same, doesn't matter if the module is on the sensor or located behind a mirror. But the performance is ...
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1answer
372 views
How to show Sony NEX F3 image quality is better than Nikon 1 J1?
According to this site, Sony NEX F3's sensor is 3x as large as Nikons, and it's image quality is 73 vs Nikon's 56 (how on earth do you come up with a number for this?). I have been experimenting with ...
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2answers
343 views
Can video shooting have a negative effect on a DSLR sensor?
When compared to shooting still photographs, does shooting video have any negative effect on DSLR sensors? For example, I wonder if shooting video may produce more heat, which might be harmful for ...
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1answer
1k views
Which digital cameras are using which sensors?
I was surprised to learn from http://photo.stackexchange.com/a/3434/4795 that Sony built sensors are used by a few major camera manufacutrers (eg. Nikon, Pentax...)
Does anyone have a list or a link ...
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1answer
128 views
What settings should be used for self-cleaning sensors?
This question mentioned a self cleaning sensor. I have a few questions in reference to self cleaning sensors.
Is there a reason to clean the sensor at startup, shutdown, (or both) automatically?
Can ...
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3answers
176 views
Shooting images smaller than the sensor size
I have a d600 and I appreciate very much the high resolution I get (useful especially for landscapes), but for most other subjects I find 6000 x 4000 to be overkill, making post-processing ...
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6answers
937 views
Is small sensor always a bad thing?
I own a DSLR. I want to buy some not-too-expensive compact, and there are a lot of compacts in the range 100-250$ with 1/2.3" sensors.
Can such a sensor/camera set give a quality somewhat comparable ...
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3answers
301 views
Image quality when using the same lens on 16Mpix vs 24Mpix
I'm considering buying a new camera and my two candidates are Nikon D7000 and Nikon D7100. I heard that 24Mpix sensor needs very good lens to produce sharp images. Considering that I currently have ...
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2answers
412 views
Does the Nokia Lumia 920 truly present any significant advancements in cameras?
Nokia is touting the new Nokia Lumia 920 as a breakthrough on many fronts for digital photography, even going so far as to say that it can achieve DSLR like results.
Of course one of the things that ...
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3answers
143 views
Why are there no digital cameras with ultra-bright integrated lenses, like f1.0, f1.2 or even f1.4?
One would think that with smaller sensors vs. film, it would be much cheaper to build an ultra bright lens. It's easy to find superzooms, 20X or 35X, but I have not been able to find a camera with a ...
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4answers
197 views
Can exposure be bracketed by many sensor readouts during single exposure?
I am getting into some HDR photography and was thinking of a new ways that camera manufactures could help us in capturing HDR pictures.
Say you want to capture three image and you have a constant ...
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1answer
230 views
Why might my camera show spots in video mode?
I own a Canon Rebel T1i, and when I try to record video, there are two dark spots on the screen. These do not appear when I take photos.
Video (spots in center and right center):
Photo:
Does ...
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1answer
351 views
What is the structure of a photosite?
I know that sensors are made from several (million) photosites. But what is in the photosites? What chemicals, if any? How are they made?
What actually detects the light? I am looking for both CMOS ...
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3answers
760 views
How can I easily tell if a sensor or lens is damaged?
I am pretty interested in recognizing any damage to digital camera in very low level (without any advanced tests).
For example, how can I identify the damage of a sensor or lens?
If there are any ...
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1answer
508 views
Why does my Nikon D90 make a strange sound during built-in sensor cleaning, when my friend's D90 doesn't?
I noticed a quiet sound (like squeaking) when using the built-in sensor cleaning of my Nikon D90. In some forums I read about many people having this behavior with the Nikon D700 and some Canon ...
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1answer
68 views
Signal:noise ratio not really decreasing with ISO for Pentax
In SNR graphs for Pentax K-30 and Pentax K5 there is something I do not get.
For ISO after 1600 the SNR doesn't really decrease. Moreover comparing with Nikon D3200, we can clearly see that until ISO ...
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2answers
249 views
Is “Ultrapixels” just marketing or is there a real benefit?
HTC has branded the sensor in its new phone (the HTC One) to be "Ultra pixels". For the same sensor size it only gives you 4MP where today's standard for top of the line smartphones is 8MP and up. Of ...
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2answers
637 views
Nikon D600: how to fix hundreds of photos with dust on them?
Like many D600 owners, I'm hoping that the dust on sensor issue that comes with this otherwise nice camera will somehow solve itself. In the meantime, I have hundreds of shots that I took with an ...
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2answers
199 views
Canon 1Ds Mk II's scratched Low Pass filter. Now what?
Besides our workhorses (Canon 5D3 and 60D), we have an old camera - Canon 1Ds Mk II which has its OLPF scratched. That is, the camera works (ok, more or less because the signs of time are present on ...
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0answers
83 views
How Focal Lengths is related to Sensor Size? [duplicate]
Possible Duplicate:
What is the difference between focal length and crop factor?
I was watching a video review of Tamron 70-300 lens where he mentioned that effective Focal length for a ...
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2answers
150 views
How linear are DSLR sensors?
To be more precise, let's say we are taking a W&B photograph.
Picture 1 : And let's say we take it once with a 1/1000 shutter speed, so that the values for R/G/B range from 0 to MAXVALUE / 2
...
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3answers
278 views
Which camera/lens combination achieves the highest possible image quality for macro?
Doing lots and lots of research I have a hard time time finding the ultimate answer to this question. I would like to shoot macro and products and aim for maximum sharpness and reproduction. Maximum ...
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1answer
166 views
Do video cameras use the same image sensors as still cameras?
Do video cameras have the image sensors cameras have?
I really don't know what I'm talking about, so if the answer was explained, I would really appreciate it.
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2answers
360 views
Dust on the sensor, should I be worried?
I did a 30 second long shot without the lens and checked the sensor and saw some dust on my sensor (even though camera has sensor cleaning). I didn't see any defects on photos yet, but is it something ...
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206 views
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222 views
Question About the D600 Dirty Sensor Test - Why Use a High f-Stop? [duplicate]
There is a lot of buzz about the dirty sensor problem on the D600, which is apparently caused by some lubricant splattering onto the sensor and accumulating over time.
My question is about the test ...
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1answer
496 views
how does full frame cameras give better bokeh than crop sensor? [duplicate]
Possible Duplicate:
When do the differences between APS-C and full frame sensors matter, and why?
Why does a bigger sensor lead to a shallower depth of field?
When I compare my camera ...
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2answers
636 views
How can I clean the sensor on a Panasonic LX5 compact camera?
I've noticed there appear to be some specs of dirt on the sensor of my panasonic LX5 and was wondering if anyone had any tips on how to clean the sensor on this camera? I found this link which has ...
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1answer
245 views
How do digital sensors that capture one color at each photosite compare to sensors that capture many colors?
There are different type of digital camera sensors, those sensors that can capture only one color at each photosite and those who can capture more than one color at each photosite.
Which one is ...
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1answer
748 views
What is causing this white spot in every photo with my D90?
Recently I noticed that the photographs from my D90 has an odd white dot in it. The dot is present in every image. The dot becomes clearly visible as I zoom into the image. I have attached a photo ...
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3answers
174 views
Do these colored streaks mean that my CF card is bad?
I have been shooting with the same Nikon d700 for about three years (about 200k clicks). I started seeing a streak run across one out of every 250 images (example here: http://wp.me/aRb6L-1lT). So, I ...
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0answers
65 views
Bright dots on all images [duplicate]
Possible Duplicate:
Why is my camera showing a lot of stuck red and white pixels?
Recently I noticed that on every picture I take, there are some tiny (close to pixel size) bright dots ...
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2answers
3k views
What is the difference between APS-C and Full Frame sensor? [duplicate]
Possible Duplicate:
When do the differences between APS-C and full frame sensors matter, and why?
I was doing research in buying the Sony NEX-7 camera, but today the news was all about the ...
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1answer
1k views
DSLR Sensors vs Exmor APS HD CMOS Sensors, Product Recommendation [duplicate]
Possible Duplicate:
What should I look for when shopping for my first DSLR?
I'm a tad new towards DSLRs and Compact DSLRs (am I calling them right?), but here goes -
What are the ...
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0answers
35 views
Can hot days damage your camera? [duplicate]
Possible Duplicate:
What will happen to a camera if it is taken to an environment beyond its operating temperature?
I have a canon t3i and I am curious to know just how much heat they can ...
