Sony NEX-7 at higher ISO's

Sony NEX-7 Voigtlander 12mm f/5.6 Heliar
Sony NEX-7 Voigtlander 12mm f/5.6 Heliar

In a previous post I wrote about the ability of the Fuji X-Pro 1 to produce very clean images at ISO's 400 and 800. This allows me to use narrow apertures and high shutter speeds.  I've also written about how I use the NEX-7 at ISO 100 only. I decided to see if the latter was still true or whether I could use Photoshop CS6 to get an improved file at ISO 400 and 800.

Sony NEX-7 Tamron 18-200mm
Sony NEX-7 Tamron 18-200mm

Sony NEX-7 Voigtlander 90mm f/3.5 Apo-Lanthar
Sony NEX-7 Voigtlander 90mm f/3.5 Apo-Lanthar

Sony NEX-7 Tamron 18-200mm
Sony NEX-7 Tamron 18-200mm

Sony NEX-7 Tamron 18-200mm
Sony NEX-7 Tamron 18-200mm

Sony NEX-7 Voigtlander 12mm f/5.6 Heliar
Sony NEX-7 Voigtlander 12mm f/5.6 Heliar

Unfortunately it was much the same as before. Even at ISO 400 the NEX-7 has far too much shadow luminance noise for my liking. For most purposes this wouldn't be a problem, but because of sending my pictures off for assessment by picture library editors who will examine the images meticulously at 100%, its not something that I'll be doing again, unless its either that or not get the picture. 

The jpgs. are better than the raw file conversions. but are not that useful, with what appears to be a fair amount of noise supression added to the files.

As I said this is purely because of my needs and many other photographers wouldn't really see this as a problem.

This exercise did also let me see that the Tamron 18-200mm zoom, isn't particularly good at apertures of f/16 and above, producing soft results and when used it the 200mm end very soft results indeed. So much so that in order to produce a decent file to upload to libraries I had to downsize them quite considierably to get a sharp enough result.

So much as I like the NEX-7 and what it produces, this is restricted to base ISO and using lenses at their opimum apertures. 

N.B. to see more on the cameras and lenses featured in this post click on the relevant labels (tags and keywords) below.
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