Ian, I recall reading somewhere that the problem is caused by the rear element on the lens being too close to the Chip. there is obviously a limit as the mirror has to flap up and down and still clear the real element but is suggest you compare the offending lens with one that does not. At any rate it sounds like a reflection of some sort,looks like time to change lenses !!
Regards Michael Wilkinson. 106 Holyhead Rd, Ketley, Telford, Shropshire. England .TF1 5DJ 44 (0) 1952 618986. www.infocus-photography.co.uk For Negatives & transparencies from digital files ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ----- Original Message ----- From: "i4images" > Have been using my sigma 105 macro ex lens for some studio work on my > d100. I am getting a rectangular mild blue shape appearing in the middle > of the shots, which is in the same place when portrait or landscape. I > have never noticed this before. I am thinking it must be a reflection of > the chip on the back element. =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
