Sigma 90mm f2.8 AF Macro w/ 1:1 Filter. f/ Minolta/ Sony Alpha. Super 35mm SLR w/ 55mm f1.4 Aus Jena Pancolor, Case & Bulk Back. To change the battery out, set the shutter to 'B', fire and hold the shutter button down, there you will see a catch that can be flipped up, exposing the battery; change when necessary .
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