D-Lux 4 : Do you know its Sensor Specifications ?

[jimbo035]

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What are sizes of the D-Lux 4 sensor and pixel sizes ?

 

Specifically compared with those of contemporary rival "Digital Compact, namely

Size of the image sensor used in the "X" camera is 20.7mm x 13.8mm.

(Stated to be approximately seven to twelve times larger than the 1/1.8inch to 1/2.5inch image sensors used in ordinary compact digital cameras.)

The pixel size of the "X" camera's image sensor is 7.8µm.

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[Nicoleica]

What are sizes of the D-Lux 4 sensor and pixel sizes ?

 

Specifically compared with those of contemporary rival "Digital Compact, namely

Size of the image sensor used in the "X" camera is 20.7mm x 13.8mm.

(Stated to be approximately seven to twelve times larger than the 1/1.8inch to 1/2.5inch image sensors used in ordinary compact digital cameras.)

The pixel size of the "X" camera's image sensor is 7.8µm.

 

I don't know the exact pixel size, but below are the specifications for the sensor from the manual. Perhaps you can calculate the pixel size from this?

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[kalina]

I'm a bit surprised that the D-Lux 4 manual being as thorough as it is it didn't include the exact dimensions of its sensor.

 

If you go here ( Image sensor format - Wikipedia, the free encyclopedia ) and look at the sensor size closest to the D-Lux 4, it's 1/1.7", which is 7.6mm x 5.7mm, so the D-Lux 4's sensor is a tad bit larger than that since its sensor is 1/1.63".

[koray]

I made some calculations, but my original post assumed that diagonal size (1/1.63") was a standard dimension. Thanks to gtravis I noticed that the inch system was not a standard dimension. After reading the Wiki entry linked above I understood that these numbers are actually referring to a packaging standard and doesn't reflect the image surface dimensions. I updated the following entry using the nearest Wiki numbers for the diagonal size.

 

When the sensor diagonal size for LX3/D-Lux4 is taken as 10.07mm, pixel width is calculated as 2.04µm. I made the calculations myself, please follow for details.

 

Check dpreview for LX3/D-Lux4 sensor data (Panasonic Lumix DMC-LX3 Review: 1. Introduction: Digital Photography Review):

 

Total pixel size of LX3/D-Lux4 sensor: 4116x2744 pixels (ratio: 3x/2x)

 

Diagonal size of LX3/D-Lux4 sensor: 1/1.63 inch => 10.07 mm

 

x = 2.792915487994028629362350627956 mm

 

Longer edge 3x = 8.38 mm = 4116 pixels

Shorter edge 2x = 5.59 mm = 2744 pixels

 

1 pixel = 0.0020356526880422949193603138687726 mm ~ 2.04µm

 

For a more precise number the actual diagonal size is needed. Hope this helps.

 

K.

[gtravis]

I'm a bit surprised that the D-Lux 4 manual being as thorough as it is it didn't include the exact dimensions of its sensor.

 

If you go here ( Image sensor format - Wikipedia, the free encyclopedia ) and look at the sensor size closest to the D-Lux 4, it's 1/1.7", which is 7.6mm x 5.7mm, so the D-Lux 4's sensor is a tad bit larger than that since its sensor is 1/1.63".

 

Actually, the table in the Wikipedia entry gives a size for a 1/1.6" sensor, which is closer to 1.63" than 1/1.7". That size is given as 8.08x6.01mm.

[mjh]

I'm a bit surprised that the D-Lux 4 manual being as thorough as it is it didn't include the exact dimensions of its sensor.

The dimensions of the sensor are usually left unspecified, except for DSLRs or rangefinder cameras. The D-Lux 4 (LX3) is an especially complicated case as the camera has an oversized sensor and only ever uses some cropped part of its light-sensitive area. The dimensions of the crop vary with the aspect ratio with only the diagonal being constant – about 9.2 mm. The largest crop size used is the one for the 4:3 aspect ratio – about 7.4 mm x 5.5 mm. For 3:2 it is 7.7 mm x 5.1 mm, for 16:9 about 8.0 mm x 4.5 mm.