The homemade raw multistack has no sharpening applied However, LR sharpening combined with masking can pull a fair bit of detail out of this without emphasising the noise too much. Comparing the two MFNR methods, the in-camera method seems to still have a bit of weird blotchiness/smearing near detail edges. Well that was a marathon! Overall, I'm happy to use ISO3200 raw as it is - even quite big prints come out well for me as the grain is quite pleasing when printing.Īt ISO6400, the camera JPG engine begins to really show it's blotchy weakness compared to a straight single shot raw conversion. The pics are all a bit underexposed so I suppose that would serve to emphasise noise. Camera JPGs had auto NR and default sharpening. Raw files from LR3.6 with no sharpening and sympathetic NR. Click on thumbnails to link to the full size version. They are 100% 4000x2700 (approx) sections, about 12mpix each from the centre of each pic. I've posted a some crops from each on flickr.

It was properly dark - I gave up trying with ISO8 as f5.6 gave an exposure of 1/3s and I couldn't get a set of unblurry shots. * One 'home baked' 6 shot multi frame from 6 raw files, again unsharpened. * One untreated MFNR shot, straight from the camera * One processed from RAW with a 'sensible' amount of noise reduction, unsharpened (I prefer to squash colour noise but leave a little luminance grain - it looks pretty good in print) I saved the files and created four JPG files for each ISO:

I then switched to pure jpg and with the same shutter speeds/f5.6 as before, I used MFNR with those ISOs. I rattled off 6 frames at each of 3200, 640, all at f5.6 adjusting shutter speed to match exposures. The target was a chart and colour checker. In Manual Exposure, I shot at 8fps in a dark room. I set to 'RAW+Jpg', standard colour, zero contrast/saturation/sharpness and default noise reduction. I thought I'd try a comparison test to see how the various methods work out. I like the extra latitude in exposure correction and white balance given by raw so I wondered if I could put the A77's high frame rate to good use and create a workflow for combining multiple high ISO raw frames and get a similar noise reducing effect.

We all know that this is a JPG only function but I'm normally a raw shooter. I've been tinkering with Multiframe Noise Reduction on the A77.

Lr enfuse processing jpegs