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From time to time, I take interior photographs and notice that they often come out "a bit grainy", "a bit yellow", and generally not as the eye perceives them "in the flesh". I use a Pentax K-r DSLR with the image quality set to highest, RAW+JPG. I tend to leave the settings on Auto.
Here is the EXIF data:
Exposure Mode: Manual exposure Exposure Bias Value: @.7 Metering Mode: Pattern Exposure Time: 1/40 FNumber: 9 ISO Speed Ratings: 800 Flash: Off, did not fire Saturation: Normal Contrast: Hard Sharpness: Hard White Balance: Auto white balance Lens Model: smc PENTAX-DA L 18-55mm F3.5-5.6 Focal Length: 18
Once I copy the image from the card, I use Photoshop to adjust the white balance, brightness, contrast, saturation, and other minor changes. Apart from that its pretty much as it comes out of the camera. Here is the un-post-processed JPEG, shot at the same time as the PEF. The image will be further compressed for display here, but the general gist of what's wrong with it should be visible.