RX100 ISO test shots without MFNR

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Digital Nigel
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RX100 ISO test shots without MFNR
10 months ago

Many of us have used the excellent multi-frame noise reduction modes offered by the RX100 and other Sony cameras, which allow high quality low noise high ISO pictures to be taken. But these do have a couple of restrictions: they don't handle fast moving subjects very well, and only produce JPEG output.

So for the occasions when these aren't appropriate, I've been trying out ISO6400 shots with my RX100 (even higher speeds with my NEX-7) using the new 'Prime' noise reduction available in DxO Optics 9. I used an indoor location with contrasty illumination and fast moving subjects: an underground railway station, specifically, Gloucester Road station on the London Underground. The first two shots are the OOC JPEG and the DxO Prime processed image, downsized to fit into the DPR 20mpx limit.

OOC JPEG, downsized to 5200x3467

DxO Prime processed image, downsized to 5200x3467

There are then three 100% crops to compare:

OOC JPEG, with the camera's default noise reduction

DxO's conventional fast 'High' NR processing

DxO's computationally intense, very slow 'Prime' NR processing

I was quite surprised just how usable all of these images are: the little RX100, with a 20mpx 1" sensor, does a fine job at high ISOs. But the Prime NR produces notably cleaner images, albeit at the expense of very slow processing. The default 'High' NR is also better than the camera's, and much faster to process, but the Prime NR seems worthwhile for the highest ISO images.

 Digital Nigel's gear list:Digital Nigel's gear list
Sony RX100 Sony Alpha NEX-7 Sony a6000 Sony E 18-55mm F3.5-5.6 OSS Sony E 16mm F2.8 Pancake +7 more
Sony Alpha NEX-7 Sony RX100
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