Sony 20 f2.8 on A99 - focus issue on short distance

Started 8 months ago | Discussions thread
QuietOC
QuietOC Veteran Member • Posts: 4,149
Re: Sony 20 f2.8 on A99 - focus issue on short distance

Faith Yeung wrote:

Hi,

I just got a Sony 20mm f2.8. On A99, when I use central focus point, the distance scale on lens body reads 1 m. The image is very soft at the outer edge.

When I use the side focus point to focus the same wall facing me, it reads 0.6 m. The image edge is much sharper but the image centre becomes blur.

Do you experienced the same? How do you handle it?

I think the issue will be less prominent for long distance shot because of the longer depth of view.

The copies I have had of the Minolta 20 F2.8 have had field curvature of that general shape at close focus but not as severe.

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