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09-25-2011, 09:26 AM   #1

WG-l: 14M pixel setting yields only 4.1MG

Hello forum folks. I'm new to Pentax and have a brand new WG-1. I'm not getting 14MG file images (or even close to 14MG).

When I'm in "P" and have 14M resolution selected along with three star quality shouldn't I get files that are 14MG (or close to it) when downloaded? I'm getting files that are only 4.1MG.

I get similar results when selecting other "Recorded Pixel" settings. 10M 1:1 yields only 3.6MG files. 10M 16:9 yields only 3.2

Did I accidentally select the "throw away the resolution" option? What does a gal have to do to get her resolution???

Thanks for your input.

Blonde Woman Stamping

09-25-2011, 09:52 AM   #2
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Getting 4 Mbyte JPG files for 14 M pixel images sounds about right. You see, JPG files are compressed, in this case 2.3 bits have been used for each pixel on average. (4 Mbytes = 4Mbytes x 8 bits/byte = 32 Mbits, 32 M bits / 14 M pixels = 2.3 bits / pixel).
09-25-2011, 10:57 AM   #3

Thank you, Jolepp.

OHHHHH! I see. The files are automatically made medium quality jpeg with a large amount of compression.

Any chance there's an option to output "Raw" for full res? I'm dreaming, right?

Okee, dokee. Thanks for the quick response!

09-25-2011, 12:25 PM   #4
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I just checked a WG-1 datasheet online and there's no mention of RAW output, just JPG's of Good, Better, and Best (sic) quality. So unfortunately, Best JPG is the best you can get. Good luck!

09-25-2011, 06:46 PM   #5

Thanks for checking on that, Rio Rico.

Blonde Woman Stamping
09-28-2011, 05:17 PM   #6
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There's another piece of the pixel puzzle a BlondeWomanStamping should know... might even turn her into a BlondeWomanSmiling, unless your a scrapbooker that stamps and then there's no hope for you

The megapixel specs of a camera are nothing to do with the file sizes of the files created. They are the number of pixels in the image recorded by the sensor. Your WG-1s 14MP setting records (4288 pixels wide x 3216 pixels high = 13,790,208 pixels... rounded by the marketing dept up to 14MP). When you set it to 10MP (1:1) you get a 3216x3216 (10,342,656 pixels) image. 10MP (16:9) gives a 4224x2376 (10,036,224 pixels) image.

Depending on what is in the image (number of colours, detail) will govern how much compression the in-built JPG software conversion engine achieves and the resulting file sizes. To prove this take a picture of a even toned scene (say a cloudless sky or a painted wall) then take a picture of a normal scene. The file size of the normal scene will be significantly bigger.

What's the end result of all this... unless you have a good reason, leave it on 14MP/Best Quality and forget about it!
09-28-2011, 06:03 PM   #7
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QuoteOriginally posted by HGMonaro:
To condense it even more:

Sensor MPs (megapixels) /= Photo MBs (megabytes).
09-28-2011, 07:25 PM   #8
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QuoteOriginally posted by SpecialK Quote
To condense it even more:

Sensor MPs (megapixels) /= Photo MBs (megabytes).
And as an example: I always shoot and generate JPGs at the highest quality. I regularly shoot with a couple 5mpx P&S's; they regularly churn out 1.5-2mb files. I regularly shoot my K20D dSLR at 14.6mpx resolution. The JPG's it produces are usually around 7-10mb. The RAWs it produces are usually around 10-12mpx; when developed, the JPGs are usually around 7-8mpx. With a bit of variation.

But that all depends on the complexity and detail of the image. Simple images are smaller; more complex images are larger. JPG quality (compression standard) matters too. If I set the JPG output to lowest quality, I could store MANY more files on a memory card or drive, but they would suck. Suitable as web thumbnails maybe, but not for much else. Well, sucky images are better than none at all, eh?


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