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Before the rush
by evan-pak

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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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504 views

Why does Sony say that a 35mm lens is “35mm equivalent when used with an APS-C camera?”

I'm thinking of getting a Sony A6000 with a Sony SEL35F18 Lens. I'm a little confused about the actual focal length (and/or field of view) of the lens when attached to an APS-C sized sensor. The ...
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2answers
135 views

why is a compact sensor brighter than a APS-C size sensor

So I may be missing something but I cannot think what it can be. I have a Sony compact hx9v and an NEX-6. the 16mm on the NEX is very similar to the compact at its widest, so I thought I would ...
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4answers
170 views

Why do camera manufacturers advertise image processors but not the sensor itself?

Camera manufacturers often advertise their image processors version in advertisements, such as DIGIC 6 (Canon), EXPEED 5A (Nikon) and many more. But we never see they advertise the sensor they are ...
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2answers
800 views

Effective focal length of kit 16-50mm lens on A6000 (APS-C 1.5x crop factor) [duplicate]

This is likely a tedious question for you guys but, as a camera noob, I'm miffed, so please bear with me. I have a: Sony A6000 (APS-C 1.5x crop sensor). With kit lens: SELP1650 lens (16-50mm) So, ...
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2answers
4k 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
89 views

Is it dangerous to use Auto Sensor Cleaning with lens attached?

Straightforward question: Is it dangerous to use auto sensor cleaning when the lens is attached?
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2answers
360 views

How is data in a camera's colorspace transformed into XYZ or a standard RGB space?

I have a canon 600d that says it uses sRGB. How is this even possible without having the same spectral sensitivity spectrum as a standard observer? It is possible to define the matching functions of ...
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1answer
119 views

can you remove a hair on the image sensor in light room?

i took a series of pictures yesterday and discovered that shooting around f/13, f/16, there is what appears to be a hair located on the image sensor and is visible in the pictures where the lens is ...
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1answer
261 views

How does long exposure photography work on digital cameras?

For analog photography it's pretty easy, the film is exposed to light during the exposure time, but what about digital sensors ? As far as I know a sensor can't "be exposed" for a long period of time,...
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2answers
115 views

Should I be worried about the pixelation in my photo? [closed]

I took a photo of a lake and while editing it I found that the image actually had sensors pixel view all over the picture. Is this something I should worry about? Here in my photo, Pixels of the ...
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1answer
120 views

What camera used the largest EXR sensor, and which one offered the largest EXR pixels?

I learned to appreciate Fuji's EXR sensor technology for travel and reporting photography when I used a Fuji X10. But like with all compact cameras, I feel a larger sensor and / or pixel size would ...
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1answer
299 views

What is the sensor inside NIKON D3300?

Looking for a DSLR with Sony sensor inside, NIKON uses Sony EXMOR CMOS sensor in their DSLR. But there is no confirmation about what is the sensor used in NIKON D3300.
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1answer
66 views

Low-light photography: How much light reflects off a surface

I'm looking at light levels for photography and I'm trying to figure out how much light hits my sensor. There are plenty of tables online which give light levels, but that's only directly relevant if ...
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1answer
245 views

Why is my Canon Digital IXUS/ELPH making distorted photos with purple cast

My ~10 year old Canon PowerShot Digital ELPH S410 (IXUS 430) has been left in a drawer for the past 6 years. I took it out recently to give to my young son as his first camera, but the pictures have ...
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2answers
73 views

How much of digital sensor noise is thermal?

Is all digital sensor noise thermal? And what is the relationship between temperature and noise? For example, as we cooled a CMOS towards absolute zero, would we discover that high-ISO images would ...
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1answer
57 views

Is there a way to determine a camera's quantum efficiency?

I need to know my camera's quantum efficiency for a research project which involves the usage of a Nikon Coolpix A10. Is there some way to know it?
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2answers
91 views

How can cameras have the same number of megapixels even when the sensor size differs? [duplicate]

The image resolution for the respective megapixels remains the same whether the camera is of medium format or full frame or APS-C or even mobile phones. However the sensor sizes differ in these ...
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1answer
172 views

What is this yellow mark I get on dark photos?

I'm using a Nikon D3200 - new to photography. Whenever I take photos of the night I always get this yellow mark in the same spot. I thought it could be a dirty lens so I cleaned it with a microfiber ...
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1answer
153 views

What does “MECHA DEVICE SERVICE” mean in a Sony repair listing?

My Sony A7 just came back from the repair with a listing that this part was changed out: A1976128A — described as "MECHA DEVICE SERVICE". Any idea what it is? I'm guessing it's the sensor, but it's ...
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1answer
7k 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 differences ...
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2answers
65 views

How to determine film size from smartphone image exif data?

I took an image from my phone and got its exif data below. It was a samsung note 4, which uses a 35mm film size (24x36) with a 43.27 diagonal. But what I am trying to figure out is the sensor diagonal ...
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2answers
48 views

Camera cleaning by professionals or by myself? [duplicate]

My camera has accumulated some dust on its chip over the past 3 years and I want to clean it. Do you have experience with cleaning your camera's sensors on your own with appropriate gear? Do you ...
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2answers
129 views

How can I use a remote shutter release during IR photography with a D3s without leaking into the image?

I'm using a D3s for infrared photography. I'm trying to use a shutter remote to take the images, but the remote's IR-emitting LED/photodiode is emitting enough light to leak into my image on the ...
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1answer
450 views

Using a full frame lens on a crop sensor camera [duplicate]

I have a Canon 70D APS-C sized sensor camera. I currently have a Sigma 10-20mm, a Canon 50mm 1.8, a Canon 75-300mm and of course the kit lens. I want to buy the Canon 24-105mm F4 L as an upgrade. I ...
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1answer
209 views

What causes chroma noise in an image sensor

I'm trying to understand what is causing chroma noise in an image sensor, specifically why it is so visible when the ISO is set to a very high value (which for CMOS I guess means that there is an ...
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1answer
284 views

Has Canon released any point and shoot cameras without optical low-pass filters?

Do either the Canon PowerShot SD880 IS or the S100 have anti-aliasing filters? If so, has Canon announced any P&S model(s) without OLPFs?
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0answers
71 views

Example image from sun-damaged sensor

There is obviously a great concern on the Net about getting ones image sensor sun damaged. I am getting interested in what such damage would look like. I have Googled around some to try to find an ...
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2answers
71 views

photographing a full moon [duplicate]

I have photographed the moon zoomed out to 500mm or so with my Lumix FZ150 when the sky is not very dark and have successfully captured terrific detail in the moon's features. However, when trying to ...
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1answer
112 views

How does ISO setting change CCD/CMOS sensor behavior? [duplicate]

In order to understand the technology in a digital camera, I considered the following question: How does ISO setting change CCD/CMOS sensor behavior? For example, does ISO setting affect the amount ...
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1answer
370 views

Exmor RS. What value does it add to an 1" sensor?

Recently, new versions of Sony P&S cameras (DSC-RX10 II, DSC-RX100 IV) have emerged. They feature new 1" stacked CMOS image sensor called Exmor RS. I understand that this technology increases the ...
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0answers
117 views

Auto Capture with Camera - Sensor Activated

I have a camera challenge that I'm trying to solve. Are there ways to configure a camera to take images automatically, upon the the target being in a specified location? For example see, the video ...
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0answers
39 views

Does a smaller sensor give shallow depth of field? [duplicate]

I have read that a full frame sensor gives a more shallow depth of field if using the same lens as on a crop frame sensor. Is this true? What I actually want to know is how does this relate to a point ...
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0answers
93 views

Good examples of full frame's advantages over the cropped sensor? [duplicate]

There is a good topic on the site called "Good examples of RAW's advantages over JPEG?" There are many theoretical discussions over the internet including on this site about the full frame and ...
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0answers
41 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 ...
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3answers
2k views

Which is better: a smaller f-number lens or a bigger sensor size?

When choosing a camera, which of the following options would be the best in taking photo in low light situation and cropping photo situation? A smaller f-number lens with a bigger sensor size A ...