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  DSLR Tips

Sony Cyber-shot DSC-T77 Gordon Laing, November 2008

Sony Cyber-shot DSC-T77 Gallery

The following images were taken with a Sony Cyber-shot DSC-T77. The Cyber-shot T77 was set to its best quality 10M quality, Auto White Balance and Multi metering. The sensitivity was set to Auto for the first three images, but set manually for the remaining five. SteadyShot Stabilisation was enabled for all these handheld shots.

The individual exposure mode, file sizes, shutter speeds, aperture, ISO and lens focal length are listed for each image.

The crops are taken from the original files, reproduced at 100% and saved in Adobe Photoshop CS2 as JPEGs with the default Very High quality preset, while the resized images were made in Photoshop CS2 and saved with the default High quality preset. The three crops are typically taken from far left, central and far right portions of each image.

Note: you may wish to open a number of galleries for direct comparison of detail and noise: Canon IXUS 870IS / SD 880IS sample images and Panasonic Lumix DMC-FX35 sample images.

Canon PowerShot SD880 IS

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Landscape: 3.28MB, Program, 1/500, f5.6, ISO 80, 6.18-24.7mm at 6.18mm (35mm equivalent)

  This first shot was taken with the T77 under bright conditions with the lens zoomed-out; the Auto sensitivity selected its lowest 80 ISO setting.

The widest focal length of 35mm has only just managed to squeeze in the yacht's sail, but there's a good level of detail across the frame.

There is however already evidence of some noise in shadow areas, and a slightly unnatural, electronic appearance to the overall colour and tone of the image.

Landscape: 3.50MB, Program, 1/320, f4.5, ISO 80, 6.18-24.7mm at 6.18mm (35mm equivalent)

  Another shot taken under bright conditions with the Sony zoomed-out to its widest angle view. As before we selected Auto ISO, and here the T77 again went for its lowest 80 ISO setting.

We held the camera close to the ground for this shot, but a respectable viewing angle allowed the screen to remain visible.

Once again, sharp results across the frame with few optical artefacts to mention, other than a small amount of fringing towards the corners.

Landscape: 3.28MB, Program, 1/400, f5.6, ISO 100, 6.18-24.7mm at 24.7mm (140mm equivalent)

    For this shot of an approaching boat we zoomed the T77 into its longest focal length and the camera chose a sensitivity of 100 ISO.

The longer focal length and slight boost in sensitivity has resulted in a decrease of ultimate fine detail, with the crops lacking the crispness of the earlier 80 ISO shots at wide angle.

The camera's shape and touch controls also made shooting this 'action' photo harder than more traditional rival compacts.

Portrait: 3.14MB, Program, 1/500, f7.1, ISO 200, 6.18-24.7mm at 24.7mm (140mm equivalent)

  For this portrait shot we fully zoomed-in, activated face detection and manually set the sensitivity to 200 ISO.

The T77 easily locked-onto the subject's face, but with the automatically selected aperture, the background is almost as sharp as the foreground.

The boost in sensitivity has also resulted in a further decrease of fine detail and an increase in noise reduction artefacts. And once again the overall image has a slightly unnatural tone and colour to it compared to rival models.

Macro: 3.45MB, Program, 1/125, f3.5, ISO 400, 6.18-24.7mm at 6.18mm (35mm equivalent)

  For this macro shot we increased the sensitivity to 400 ISO and positioned the camera as close at it would focus in its 'close focus enabled' macro mode - this allows you to get as close as 1cm at wide angle.

The centre of the image is sharp, but like many compacts at very close range and wide angle, the field isn't very flat; indeed move slightly away from the centre and the image starts to get very soft, although at least there's little of the fringing also seen on many rival models.


Indoor: 3.39MB, Program, 1/40, f3.5, ISO 400, 6.18-24.7mm at 6.18mm (35mm equivalent)

  Our first indoor shot was taken with the T77 at 400 ISO under artificial light. Face detection once again locked-on quickly.

As also seen in our High ISO Noise results page, the increase to 400 ISO results in a significant increase in noise, which on the T77 means greater smearing through noise reduction.

As such fine details are now absent, but the result still looks acceptable for most prints though.

Indoor: 3.63MB, Program, 1/20, f3.5, ISO 800, 6.18-24.7mm at 6.18mm (35mm equivalent)

  Our second indoor shot was taken with the sensitivity increased to 800 ISO. The T77 has a modest maximum aperture of f3.5, but the subsequent 1/20 shutter speed was well within the capabilities of its SteadyShot system for effective stabilisation.

The increase in sensitivity has unsurprisingly resulted in a noticeable reduction in quality here with quite visible noise.

The crops still contain a reasonable degree of detail, but worryingly there's streaking visible to the right of the display cabinet, probably down to sensor blooming.

Indoor: 3.36MB, Program, 1/50, f3.5, ISO 1600, 6.18-24.7mm at 6.18mm (35mm equivalent)

  Our final indoor shot was taken with the sensitivity at 1600 ISO. Here's there's a significant reduction in quality with undesirable artefacts through noise and noise reduction. The image has also become quite de-saturated.

So again, like most compacts, 1600 ISO should be avoided unless for emergency use or small emailed images.

The T77 also offers a 3200 ISO mode, but it ain't pretty. You can see an example of it in our High ISO Noise results.

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