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Sensor terminology?

Purma Special

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Could someone please decipher the following description, of my camera sensor?

Thanks.

1/2.3-inch
 

David_MC

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It describing the size of the sensor (approx 6.3 x 4.7mm).

Here is an old article from DPReview explaining common sensor sizes.

 

Purma Special

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So, does my camera have a 2/3" sensor?

If not, how does it compare to, say, a 1" sensor?
 

Mj224

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Yea, 1/2.3 is just a ratio is it not? The sensor could be 100yards by 230 yards...Some sensor, should be able to see the birds feathers if it did not crush the little beastie.....

Why not just say in mm or inches the size.....:)
 

Snips

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The 35mm slr (single lens reflex) camera is now more commonly referred to as a full frame dslr (digital single lens reflex). I think the sensor size is 35mm x 24mm. This is what became the standard in film photography and then later in digital cameras. Since then we have seen crop cameras with a smaller sensor and bridge cameras with even smaller sensors.

Great electronics and so on but a 6.3mm sensor is about 20% of the 35mm sensor so image quality won't be that great.
 

Purma Special

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So what size is my 1/2.3-inch sensor?
 

Snips

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What camera is it and then we can have a check on Google?
 

Isac

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This might give you an idea of sensor sizes. A picture paints 1600 word. (that's metric equivalent of 1000).
Sensors-size-01-01.jpg
 

Ozzie_Traveller

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G'day mate

If I go back to film days - the pros using large format film cameras quite enjoyed telling us 35mm film users that "the larger the negative (back in those days) the easier it is to create a clean, sharp print. While this logic was / is quite correct (and still applies today), the down side often was that the lenses for the smaller 35mm cameras were sharper than the large-format 'bigger' cameras ~ therefore those 35mm film cameras could often produce a print of similar sharpness as the original camera

With respect to our digital cameras, the additional complication is electrical noise, stemming from the pulse of charge at the moment of recording the image 'straying' from one pixel to its next-door-neighbour and causing ziggly lines an parts of the image. Thus a larger sensor with a lower pixel density (ie- the number of pixels per mm of sensor) will also have a lower noise-threshold than a camera whose sensor is tightly packed with pixels

I also use cameras of 1/2.3" sensors and have watched their pixels count increase from 3mpx back in 2003, to 18mpx nowadays. Personally I believe that 18mpx is trying to cram too much into such a small space ... and as such, I have chosen to buy / use the Panasonic FZ-200 / 300 cameras, as Panasonic have selected a 12mpx sensor for those units, so as to reduce electrical noise and other things

If and when you decide that the Fuji no longer meets your needs -but- you still want to use a small-bodied camera with a good zoom lens, then you might like to consider the Panasonic FZ cameras

Hope this helps
Phil
 

Purma Special

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I'm not sure I'd class the SL1000 as a "small-bodied camera".
 

Purma Special

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Personally I believe that 18mpx is trying to cram too much into such a small space ... and as such, I have chosen to buy / use the Panasonic FZ-200 / 300 cameras, as Panasonic have selected a 12mpx sensor for those units, so as to reduce electrical noise and other things
The SL1000 is somewhere middle-ish, at 16.2MP, and I can's say I've noticed any image problems.
 

Petrochemist

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So, does my camera have a 2/3" sensor?

If not, how does it compare to, say, a 1" sensor?
No
1/2.3" is smaller than 2/3" (it's a description that comes from video tubes referring to the outside of the tube not the sensitive area and has no direct link to the sensor size). Your sensor is the same size as on my tiny Pentax Q with a 6.17x4.55mm sensor area giving it a 5.6x crop factor. Many phones have bigger sensors!

2/3" is a larger size (8.8x6.6mm) also used in some phones and having a 3.9x crop
a 1" sensor is bigger still (13.2x8.8mm) or 2.7x crop as in the Nikon CX range.

1/2.3" has about half the sensor area of a 1" sensor.

Despite being 10 years old & having a tiny sensor the Pentax Q can still take great shots! It is somewhat restricted compared to my A7ii, but it's also a fraction of the weight :)
 

Purma Special

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My SL1000 is about 8 years-old, and I too am quite impressed with the image quality.

It's been to Europe with me, a good few times, and never let me down.

I have the image size set at 4608x3456, and the results are great.

I'd post you one of the images, but the pixel size and file size limits would defeat the purpose.
 
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MikeB

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The dimensions of a 1/2.3in sensor (such as the Canon PowerShot N) are 6.16mm x 4.62 dimensions (approx. 0.242in x 0.181in). That is slightly less than 1/3 inch measured diagonally (7.7mm). This is among the smallest sizes for a sensor.

Why is it called 1/2.3in designation? For some reason manufacturer's adopted legacy terminology used to describe the 1950s-1980 Vidicon video camera tubes. This is supposed to provide the true true diagonal of the sensor multiplied by 3/2. The result is expressed in inches and is usually (though not always) rounded to a convenient fraction. This is also how we get the 4/3 terminology such as Micro Four Thirds.

There are benefits of having a small sensor. You get excellent depth of field - easy to achieve focus through the scene. Telephoto focal lengths are inexpensive. Easy to carry and less expensive.
 

Ozzie_Traveller

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My SL1000 is about 8 years-old, and I too am quite impressed with the image quality. It's been to Europe with me, a good few times, and never let me down. I have the image size set at 4608x3456, and the results are great. I'd post you one of the images, but the pixel size and file size limits would defeat the purpose.
G'day mate

The image sizing limits on this forum (and others around the world) are to assist "the management" with costs related to bandwidth and image storage. They can be a bit of a nuisance to start with, but -like most things- one gets used to them as time goes by

Personally, I drop images to 1000px wide here (and elsewhere) and those images seem to be okay for viewing quality on the average computer. So- hopefully we will see some of your EU holiday images sometime soon !

Hope this helps
Phil
 

Purma Special

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Here's one I quite like.

I took it at the German Russian Museum, Berlin. It's the "surrender room".

The surrender document, which had been signed the day before, in Rheims France, was ratified in this room.

DSCF0192.JPG
 

Ozzie_Traveller

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G'day mate

A most interesting image and story behind it ... and your camera work is beaut too
Your verticals are vertical, the exposure is quite okay, the framing shows enough for us to get a good idea as to the whole room
A 'well done' from me :)

edit- you might also like to post this as its own item into a new topic and ask others for their ideas
You have a choice of 'prefix' for all posts outlining what sort of response you are seeking

Hope this helps
Phil
 
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Purma Special

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I've posted it in the All Other Images forum, as a "Full Critique" thread, so do your worst. :)
 
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