Here are some high-res ISO 100 to 25,600 sample images and 100% crops taken with the Fujifilm X-T1 and the Fujinon XF 10-24mm F4 OIS, a beauty of a wide angle zoom to be released by the end of March 2014. You’ll say that’a pretty lame lens with an aperture speed of throughout 4. Well I beg to defer. With today’s ISO capabilities, this lens is an ideal compromise between speed and size. Add the build quality, certainly one of the best built XF lenses to date.

Below’s contrasty JPEG files are straight out of camera, downsized and slightly compressed with standard settings on and noise processing off. Overall, also color and luminance noise behavior is pretty impressive. New, lower noise circuitry which presumably induces lower noise during readout allows Fujifilm to give another stop of usability in the midrange and better results at all settings below that.

It’s the first X series camera with maximum ISO bumped to ISO 51,200 up from ISO 25,600. In emergency cases the former and latter are absolutely usable and you’ll enjoy more latitude for using the practically clean ISO 6,400. Detail remains excellent at ISO 3,200 and drops off slightly at ISO 6,400 as noise increases.

In-camera settings will leave the compromise up to you whether you wish to retain more detail versus noise suppression with a cleaner image. Still, the higher you go the more impressively the X-T1 shines at “borderline” ISO. I’t certainly the best performing and tweaked X-Trans II sensor in an X series camera.

Click on a crop for the higher resolution uncropped image — first though downsized ISO 100 and the maximum ISO 25,600 I took (right, hardly possible to tell a difference at this size):

BTW, the scene was really dark. All shot on a tripod with timer at 24mm focal length:

+++ You can order the Fujifilm X-T1 from Amazon (body / kit), B&H Photo (body / kit) and Adorama (body / kit).

The upcoming Fujinon XF 10-24mm F4 OIS is available from Amazon, B&H Photo and Adorama.