賓得如何使用m42

賓得單反上用M42螺口鏡頭要用M42/PK口轉(zhuǎn)接環(huán)
1、M42/PK口轉(zhuǎn)接環(huán)有多廠家生產(chǎn)總體兩類類帶光圈頂針鏡頭轉(zhuǎn)換光圈自動(dòng)轉(zhuǎn)接環(huán)-相當(dāng)于賓得A鏡頭另類僅僅只能轉(zhuǎn)接機(jī)身上轉(zhuǎn)接環(huán)-相當(dāng)于M頭
2、賓得相機(jī)接口由M42接口改PK口時(shí)已經(jīng)充分考慮M42口鏡頭應(yīng)用問(wèn)題M42口鏡頭通過(guò)轉(zhuǎn)接環(huán)轉(zhuǎn)接PK口機(jī)身無(wú)論用種轉(zhuǎn)接環(huán)鏡頭光圈變(會(huì)像上面位網(wǎng)友所說(shuō)會(huì)使大光圈變小)也會(huì)影響光通量說(shuō)通過(guò)轉(zhuǎn)接環(huán)轉(zhuǎn)接M42口鏡頭光通量會(huì)變小毫無(wú)道理主觀臆測(cè)-毫無(wú)根據(jù)胡說(shuō)八道