Fo­cus

NPhoto - - Gear Zone -

Some of the Diana+ lenses have a fid­dly fo­cus dial in­side the front of the lens bar­rel, whereas oth­ers have a more con­ven­tion­ally placed fo­cus ring. The Pet­z­val lens shown here re­lies on a geared rack sys­tem with pro­trud­ing thumb­screw.

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