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Pentax Optio X70 Indoor Crops

12 Megapixels12 MegapixelsUltra-Zoom: At least 10X optical zoom.Ultra-Zoom: At least 10X optical zoom.Electronic View FinderElectronic View FinderStabilization: Compensates for tiny involuntary movements of the camera.Stabilization: Compensates for tiny involuntary movements of the camera.720p HD Video: 1280 x 720 resolution or more but less than 1920 x 1080.720p HD Video: 1280 x 720 resolution or more but less than 1920 x 1080.Manual Controls: Both fully-manual (M) and semi-automatic modes (T and V).Manual Controls: Both fully-manual (M) and semi-automatic modes (T and V).Custom White-Balance: Specifies exactly what should be white to the camera.Custom White-Balance: Specifies exactly what should be white to the camera.Action Photography: Shutter speeds of 1/1500 or more.Action Photography: Shutter speeds of 1/1500 or more.Spot MeteringSpot MeteringAccepts Secure Digital High Capacity (SDHC) and SD memory.Accepts Secure Digital High Capacity (SDHC) and SD memory.Neocamera detailed reviewNeocamera detailed reviewDiscontinued: No longer produced by the manufacturer. May still be in stock or found used.Discontinued: No longer produced by the manufacturer. May still be in stock or found used.

Indoor

Below are sample crops from an indoor photograph of a book-spine at each of the Pentax X70's ISO settings. A crop from the Fuji Finepix S100FS
Fuji Finepix S100FS
at the same ISO setting is shown next to each crop from the X70. Images below are all unmodified 100% crops from their respective cameras taken at the highest quality setting. ISO and white-balance were set on camera, everything else was left on automatic. The last few crops are of lower resolution because of camera limits.

These crops help determine which ISO settings can be acceptably used on these cameras. As noise increases, most cameras compensate with noise reduction which introduces softness. The result is that, while you can partly reduce noise at the expense of details, the maximum acceptable print size gets smaller as ISO is increased. The point at which a print become unacceptably noisy is a matter of personal taste.

Pentax Optio X70

Fuji Finepix S100FS


ISO 50 - 2.5s F5.6

ISO 100 - 1.3s F5.6

ISO 100 - 1.4s F5.6

ISO 200 - 0.6s F5.6

ISO 200 - 0.71s F5.6

ISO 400 - 1/3s F5.6

ISO 400 - 1/3s F5.6

ISO 800 - 1/6s F5.6

ISO 800 - 1/5s F5.6

ISO 1600 - 1/13s F5.6

ISO 1600 - 1/10s F5.6

ISO 3200 - 1/25s F5.6

ISO 3200 - 1/20s F5.6

ISO 6400 - 1/50s F5.6

ISO 6400 - 1/42s F3.5

The Pentax Optio X70 produces very usable ISO 50 to 100 shots. The ISO 200 shot has just a little more noise but nothing to be alarmed about. ISO 400 clearly shows increased noise and a color-shift, still it could be usable for a small print. Anything above ISO 400 should not be considered useful, noise and softness are high and so is the color-shift. Next to the X70, the Fuji S100FS really shines, note how the Fuji's ISO 400 crop looks similar than the X70's ISO 50, a 2 1/2 stop disadvantage for the Pentax Optio X70.

Pentax Optio X70
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By on 2009/08/20
2

Pentax X70 Facts

Large digital camera
12 Megapixels Ultra ZoomISO 50-1600
24X Wide Optical ZoomShutter 1/4000-4s
Built-in StabilizationFull manual controls, including Manual Focus
0.20" Built-in EVF 200K PixelsCustom white-balance
1.2 FPS Drive, 6 ImagesSpot-Metering
1280x720 @ 30 FPS Video RecordingLithium-Ion Battery
2.7" LCD 230K PixelsSecure Digital High Capacity
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