Posted: Tue Jun 28, 2011 6:53 am Post subject: |
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martyn_bannister wrote:
Hi Peter,
First you have to make sure the lens is assembled correctly. If possible, using an optical scheme diagram from the internet so that you know all the elements are in the right place and the right way round, with all the spacers in the right places also. Next thing I look for is the edges of the elements, which are invariably painted black. This paint very often comes off and I then apply black marker pen to the edges. This can very often cure a lack of contrast/haziness.
Hope this helps. |