[i34u]

之前見過有位師兄將50 f1.8倒接上dc影出來的相(影銀紙)，個效果真係勁，連張銀紙的纖維都影埋出來.
anyone tryed with D70 ?

[Gabrielc]

加 Extension Tube 呀！

[geofku]

係用倒接環、唔係Extension tube。如果用廣角鏡(eg 35, 20mm)倒接效果更好。尖沙咀香檳地下有好多欵倒接環 Canon, Nikon, Pentax)可以去問下。

[hsc]

咁都得

[Leica Man]

原因係: 一般Lens設計係以無限遠表現最好, 越近就越差. 倒接環把Lens反轉用就係咁解. 不過我未用過, 呢種技術恐怕就快失傳...........

重有, zoom 鏡?macro係靠移動中組鏡去compensate, 唔夠 "Lens反轉" 咁正. 講到明係macro ?Lens, 好似Nikon 60/2.8, 100/2.8 就等於買一枝反轉??Lens(所以佢?影遠?就差D).

[taro04]

我準備購入一支50mm 1.8/ 1.4 然後想再加倒接環/extension tube 變macro兩用
到底1.8好還是1.4好呢? 然後extension tube好還是倒接環好呢?
因為我不是經常影微距，所以不想買專用的微距鏡(eg. 60mm f/2.8)
請各位大師指點，謝謝!

[wlwong228]

Push

[yoyobobo]

50m,m 1.8變成 macro好玩
倒接環$.....?

[clivemilk]

For 50mm rev. = 1:1
For 28mm rev. = 3:1

Should use Canon FD (not EF) / Nikon / any len w/ manual aperture blade control ring. If u use EF50mm 1.8, it is very very narrow DOF, very very differcult to focus except you hv bellow.

And 倒接環 can use a body cap + stepup ring, stick both together and then drill a hole on a body cap. If u use other len for reverse marco u just change the stepup ring.

[hsc]

$$$$$$

[genewch]

Does this inversion ring need 2 lenses to connect together head to head? Also, can it be used in Canon EF lenses because they don't have manual aperture rings?

This rings sounds very interesting.

[clivemilk]

To: qenewch,

No, just use the "opened" body cap put onto the body and take shoot. Sorry that i only have one DSLR, i cannot take some photo on 20D w/ this rev. 50mm.

Theoretically, it is OK but every photo is wide open aperture. On 1:1 marco w/ F1.8, u can calculate the DOF. It is just a tiny space.
It is suggested that use Canon FD / Nikon / any len w/ manual aperture blade control ring.