NX200 test shots - lenses, focus, and ISO 400

Started Nov 9, 2011 | Discussions thread
Ariston Senior Member • Posts: 2,401
Re: ISO 400 crops - 1/80sec blur

Andy Westlake wrote:

Just to illustrate the issue we encountered with our ISO 400 shots, here are the relevant image crops (I'm not going to post the full image). Left to right is ISO 200, 400, 800 (1/40, 1/80, 1/160 sec respectively), top row is jpeg, bottom row is raw.

In the raw file especially, ISO400 is anomalously soft - but you'd probably not notice this outside of these highly-controlled tests. Do bear in mind we're staring at 100% crops out of a 20MP files here - these crops are a tiny fraction of the full image area.

We see similar blur in all our studio shots taken at 1/80 sec when we stare at them this closely, but as yet haven't investigated any further.

what is odd is the one taken at the lowest ISO (200) is sharper despite having the slowest shutter speed. could it be the camera is counteracting with the steadiness of the tripod setup? or a bug somewhere between the camera firmware associated with the OSS lens? or the lens needs a firmware update.

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