Fujifilm X-S1(Part 3) - ISO and White Balance performance

6/13/2012 11:33:57 AM

ISO and White Balance performance

How does the X-S1 perform in terms of noise and white balance?

Description: ISO and White Balance performance

ISO and White Balance performance

The X-S1 uses different processing techniques depending on the selected shooting modes and file options. Evaluating noise at full resolution means avoiding the EXR processing routine, resulting in lower-resolution files. If using the RAW file option as well, sensitivity is curbed to a maximum of ISO3200 so our results are limited to that.

In terms of noise, in-camera JPEGs are clean up to ISO1600. RAW files show some chroma noise at ISO800 when converted using the default settings in the supplied Silkypix RAW File Converter. Another issue is that JPEG files don’t sharpen well in Adobe ACR or lightroom.

With White Balance, the X-S1 produces pleasing results when set to AWB, but colour inaccuracies were noticed under incandescent and low natural light. This is irrelevant when using RAW but can be troublesome when shooting JPEGs but the X-S1 has options available to deal with it.

Test shot in detail: Look at one of our test shots with a critical eye

Description: Test shot in detail

Test shot in detail

Highlights: The highlights are blown in the brightest areas

Long exposure: The X-S1’s manual modes let you to get creative with slower shutter speeds

Noise: There is no noticeable noise creeping into the shot, which is pleasing

Finer detail: Even in low light there is plenty of texture and form in the details

White Balance: Auto WB gives realistic results straight out of the camera


Canon PowerShot SX40 HS

Price: $690


Tel: 01737 220000

Description: Canon PowerShot SX40 HS

Canon PowerShot SX40 HS

Housed in a curvaceous body sits a similar 12MP resolution type back-illuminated CMOS chip and 35x optical zoom, but it’s a smaller 1/2.3in (6.1x4.6mm) type sensor, which explains the lower price

Panasonic Lumix DMC-FX150

Description: Panasonic Lumix DMC-FX150

Price: $705


Tel: 0844 844 3899

Panasonic’s DMC-FZ150 rivals the Canon rather than the Fuji by virtue of the less costly 1/2.3inch sensor but it too boasts a high-ratio image stabilised optical zoom (24x) and Full HD video.


Features: 9/10

The camera is full of essential features for the enthusiast, and is mostly efficient and easy to use

Build quality: 7/10

There’s no faulting the body’s build at this level, but the metal-barrelled lens has more movement than we would like to see at this price

Handling: 7/10

Some of the settings can be difficult to find, but the camera’s ergonomics and balance are very good

Quality of results: 7/10

The EXR sensor does have benefits, especially for automatic captures and it’s capable of great results

Value for money: 6/10

This is something of a unique offering and it’s priced that way, but the X-S1 isn’t without a few flaws

Score: 7/10

Although hugely versatile and easy to use, the mixed performance means the X-S1 doesn’t quite fulfill its potential. It’s pricey too

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