在Yahoo Answers上Ask，不多时得到一个Answer称其为Vivitar的Repackage产品，这多少有些令人失望但我心中存疑：Vivitar 28mm f/2.8与Underground 28mm f/2.8在外观上有诸多不同，而且最近对焦距离这一重要技术指标亦不同，Vivitar 30厘米而Underground只有约23厘米左右。 果不其然，数小时后得到另一位资深人士的Answer：
Vivitar never manufactured its lenses. It doesn't look like any 2.8/28 that Vivitar distributed under its name. Your lens does bare a resemblance to the Hanimex MC 28mm f/2.8. After some quick research, it appears that the Hanimex and Underground name may share some connection.
Hanimex was, like Vivitar, a distributor of photographic equipment. Unfortunately, that's as far as the road leads. I've read much speculation about the possible makers—a number of which are suspected to have supplied Hanimex in the decades of the company's operation—but nothing seems conclusive.
From what I've read about the Hanimex 2.8/28, it's a pretty good lens with very good bokeh.
按其提供的线索，果然发现Hanimex 28mm f/2.8与Underground 28mm f/2.8镜头外观完全相同，别无二致。关于Hanimex：Hanimex was, like Vivitar, a distributor of photographic equipment. Unfortunately, that's as far as the road leads. I've read much speculation about the possible makers—a number of which are suspected to have supplied Hanimex in the decades of the company's operation—but nothing seems conclusive.
From what I've read about the Hanimex 2.8/28, it's a pretty good lens with very good bokeh.
Hanimex was founded after WWII to import European cameras to Australia. It was founded by Jack Hannes who gave it its name which was an abbreviation for Hannes Import Export. It sold cameras that were made by Tōkyō Kōgaku and Sedic in Japan, by Finetta, Montanus, Vredeborch and Dacora in West Germany, by Pentacon in East Germany, by Chinese and other manufacturers. Hanimex distributed SLR lenses for several different lens mounts of renowned camera systems. The lenses were also just branded as Hanimex. Nowadays the website of Fujifilm Australia appears behind the web-address www.hanimex.com.au.
Hanimex贴牌欧洲相机与镜头销售至澳大利亚，与另一家向美国本土销售同类产品的Kalimar公司类似，早期贴牌相机与镜头品质尚佳，但随后开始选择更为廉价的日本产品，甚至南朝鲜和中国产品。奇怪的是，不确定Hanimex与Fujifilm有何关系，疑惑来自于hanimex.com.au打开后实际就是Fujifilm公司网站，不知是有何背景还是只是毫无意义的域名指向。
这枚罕见的Underground 28mm f/2.8做工精良，操控手感良好。锐度不及Nikon原厂镜头，反差较低，色彩清淡。出乎意料之外的是，边缘成像与畸变控制远比想象中要好，虽然在最大光圈2.8下成像质量下降，但收缩至4时便明显改善。虽然光圈叶片只有五叶导致Bokeh的亮斑呈明显的五边形，但在如此广角镜头中Bokeh表现虽然不像前述Answers中所说的非常好，但完全可以称得上柔和细腻，如非严苛背景未有明显二线性。
昨天下午在大吉片试镜，闷热难耐，天气阴沉加之胡同之中树荫秾密，低照底之下大多使用f/2.8/4/5.6三档，而尤以f/4最多。
10. 潘家胡同
12. 蝈蝈笼儿 粉房琉璃街南口
粉房琉璃街南口西侧墙根底下总有些小摊儿，卖些金鱼鱼虫之类的小玩意儿，几个蝈蝈笼儿悄无声息的挂在墙上，走近了拍照时才发现里面是有蝈蝈的，悄无声息的，应当和我一样热蒙了。
16. 潘家胡同南口
潘家胡同南口一片废墟之中，孤独一棵向日葵。天阴沉着，向日葵失去目标兀自低垂着头。
18. 潘家胡同
我一路跟着他们从潘家胡同南口走到北口，转身再从北堂子胡同直到果子巷。
22. 南大吉巷
门前本来还有个倚门站着的小姑娘，看见我蹲下仿佛要举起相机但迅速转身回到院子里。看着镜头的小姑娘漂亮又可爱，只可惜没敢停留太久多拍几张，害怕她们家里大人会以为我是坏人。
26. 北大吉巷
32. 北大吉巷
这条肥白的短腿狗一直在冲我吠叫，其间被快门声吓到四腿一哆嗦。这会儿院子里另一条随主人去厕所的棕色短腿狗狂叫着向我直冲过来，肥白短腿狗眼见得救兵来到，壮了狗胆从台阶上跳下，两条短腿狗唱和着狂吠，我脑海中已经闪现最近的能打狂犬病疫苗的医院在哪里的问题，但幸好我只是抬抬腿它们就吓得夹着尾巴逃到更远处再回过头来装作胆儿肥的继续叫。
35. 玉鸟儿 北堂子胡同
很焦燥的一只玉鸟儿，在笼子里四处跳跃，光圈只有4，万幸漂亮的玉鸟儿正在焦内。
37. 果子巷北口
每次来大吉片总会在果子巷北口这家食杂店买水，我喜欢它在单调落陌的大吉片内缤纷的色彩。
Nikon F3
Underground MC Auto 1:2.8 f=28mm
Agfa Vista 100
Epson Perfection 4490 Photo
Underground MC Auto 1:2.8 f=28mm
Agfa Vista 100
Epson Perfection 4490 Photo
