I currently used the NEX-7 with the 16mm/2.8 + Fisheye converter with my NEX-7 so when Sony announced the SEL10-18/4 lens, I pre-ordered it.
I must say that when I took the first couple of shot, I was disappointed with the magenta cast. At least there's no smearing of details or colour-shifting problem.
Here is the first photo I took with my NEX-7 + SEL10-18/4. Sorry its just a quick snap outside as weather hasn't been really good here in Melbourne, Australia (and it should be summer!).
|1/1600 @ f/4 - 10mm ISO 100|
As you can see from the photo, there is some magenta casting but not that much and post processing (ugh!) will be able to minimise this issue.
Now to find a way to minimise this magenta cast; first suspect was the AWB of the NEX-7. Why the white balance? I've noticed that when I converted the files to DNG in Adobe LR4.3 the Temp is around 5450 and the Tint always has a +3 towards the magenta side.
I went into the NEX-7 White Balance setting and instead of shooting AWB, changed it to Colour Temp/Filter, and dialled in the following setting;
- Temp: 5400
- Filter : A-B:B1 and G-M:G1
|1/4000 @ f/4.0 - 10mm ISO 100|
You can still see some slight magenta cast but its not as 'bad' as the first one.
This is NOT a SCIENTIFIC test as I still am trying to find the best setting to at least reduce the magenta cast.
This however highlights another 'weakness' of the NEX-7, the ability to save your setting :( Come on Sony, at least give us one memory option to store our setting.
Using the lens indoors; the magenta cast is a non-factor. Here is a quick snap sample (sorry as the photo is not that interesting).
|1/15 @ f/4/.0 - 10mm ISO1600|
All I can say personally is that I can work with the NEX-7 + SEL10-18 combo.
I will be doing more testing on the SEL10-18 NEX-7 combo during the holiday period. For now, I will be keeping my NEX-7 and the NEX-6 and decide which one to keep after the Christmas season.
Keep shooting! :)