I did own MMG85f2.8, MMG85F1.4, 50yr 85F1.2, AEG100F2 now or before and thanks Manyung borrow me the 100f2.8 for me to try before. therefore I had the following comment repect the above lens:
1. 85f2.8 - 無論任何光圈, 整體o既表現好平均. 解像度如果唔放大超過12r, 同85f1.4 差唔多, 顏色比較濃但係有其他鏡咁豔. adv: 細小
2. 85f1.4 - 大光圈同細光圈分別極大, 大光圈時成像柔和色彩豔麗, 細光圈時成像極利但色彩轉淡 (不過都比85f2.8豔). 感覺就同50f1.4差唔多. 個人suggest就係要買就最好貫gemeny version. adv:如果知道比鏡光圈vs performance的比例, 你就可以用唔同光圈影出唔同style o既野!
3. 100f2 - 極高解像度, 係以上3鏡之首! 比鏡立體感出色同borken係3鏡中最出色. 可是比鏡色彩就冇85f1.4咁重味精. adv: 質素平均而出色. 買左一定冇死錯人...
4. 100f2.8 - 係近攝o既時候 解像度超高, 比100f2還利害! 色彩都十分出色但係感覺有d次85f2.8o既tone (only a little!) 立體感我就覺得100f2好dd (just dd). 如果影女仔就要小心用比鏡, 因為解像度超高o既問題, 你好容易比d 唔正o既美美打你一身...
adv:比鏡係萬用鏡由marco到landscape都咁好用!
5. 85f1.2.....no comment....king of the king in middle telephone lens!
You may refer to the follwoing link for more reference:
http://forum.contax-club.org/viewtopic.php?t=768