Я бы такие не брал.
Даже не пользуясь ни разу подобным девайсом видно,что конструкция не самая лучшая.
На иБее такие чудо стоит около 40$.
Вот отзыв реального пользователя,который продаёт их на иБее.
Цитата:
Up for Sale is a 4 Way Macro focusing rail, I've got it off another seller here on eBay, and I'm selling it because it does not suit my needs, It is too light, and incapable of carrying an SLR camera properly, it barely keeps my Nikon FE2 in place, but my D200 is too much for it, I'm sorry but this is the truth and no other seller will tell you that!
Цитата:
Q: Hi, I just wanted to thank you for your honest description about this focus rail. I emailed a seller who assured me there would be no problem for it with my 40D, flash and sigma 180mm macro lens...it simply does not look like it would support the weight. I'll stick the the better made rails thanks to your honest opinion!
![Smile :)](./images/smilies/icon_smile.gif)
Nov-17-08
A: Hi, The only way this can support a 40D with a 180 macro is only if it is horizontally leveled, give or take 10 degrees incline, and without much side or front movement because it becomes less stable. and this also means you have to advance or retract an almost 2KG system with 2 fingers. If it is pointed downwards or upwards there is unavoidable creeping while moving the camera, because it's not geared, but a 2 screw system, one locks and releases the rail, and the other advances the camera on the rail.
Думаю особые комментарии излишни.
То то они мне показались хлипковатыми.
![Confused :?](./images/smilies/icon_confused.gif)
Лучше взять Velbon Super Mag Slider,хотя я ещё даже не прикидывал,какие возьму,если возьму.На том же иБее они отдаются по 90-100$ с доставкой.
Все остальное гуд! Все резьбовые соединения и втулки ЖЕЛЕЗНЫЕ.