这头在近处对焦时光圈会缩小，由f2.8变成f3，f3.2, f3.3, f3.5, f3.8...此头并非真正的2。8的光圈。俺还准备买一Focusing rail,谁给俺推荐一个，不要太贵吆！谢谢！

老中医:
你看,它也只说1/4 - 20" and 3/8" tripod screws ,而不提1/4 - 20" and 3/8" QR plate screws,然后又用468做示范,而丝毫不提468RC. 而它很多其它东东谈到头的时候,都会提非RC和RC的.

不过根据那个thread里的跟贴里举的例肯定是可以接QR板了.
"...I put a QR plate on the bottom of the rail and attach it to a 3-way pan head...."

不过大家都谈往TOP上再加头,可能那样明显好用些,还有一个好处是不用把相机上的QR板卸下来

"..Then I attach a Kirk QR-1 "arca-swiss" style clamp on top of the rail. This makes for a very stable setup, although the QR-1 is a smaller than normal clamps so not all arca-swiss style plates will fit in it (Kirk's plates do fit of course)..."

"....I found the Bogen 3229 head (a simple QR head that swivels in one direction, designed for use on a monopod) works great attached on top of the rail. This head is about 1.5" thick and moves the camera above the rail so you don't bang your chin into the focusing rail...."

Hi LongVoyage,
I just found a Manfrotto brochure on my bookshelf. There is a pic. that shows a Bogen 3419 mounts on a 468 proball head. It says " ...the plate accepts both 1/4 - 20" and 3/8" tripod screws and is supplied with 1/4 - 20" and 3/8" camera mounting screw."

Cheers!

老中医:

这两天我也在想这个问题,按道理,如果能接在非QR的头上,就应该能接在QR板上,因为两个的接口是一样的,(除非那个Micro Positioning Plate 的BOTTOM有什么东西,如果上QR板会挡住,而非QR的头就刚好). M的网站只列非QR的头,看来我就被蒙蔽了,刚才把那个thread仔仔细细看了几遍,看来起主题介绍的人开始也认为只能接非QR的头:
"....to use a 3-way pan head without a quick-release builtin to the head on the tripod, and mount the rail directly to the head........."

能接有QR板最好了,这样给我剩掉不少事,倒不是QR的事,主要是不用老换头.

还有一个问题,M的这个Micro Positioning Plate应该是能直接接相机,但大家都建议在那上面再上个小头,然后把相机上在那个小头上,如果那个小头也用M的快装板的头,甚至大一点的象308RC不知道稳定性怎么样. 嗯,看来只有先把它ORDER回来,再试试看用什么组合最好.

最近两个月深感附件的"陷阱性",拿了F3HP+MD4后,又花了差不多1/3的相机钱配了一些附件,买了990后花了差不多1/2相机钱配附件. 而一个微距头加一个三脚架带来的附件开销更可能是1.5-3倍.

另这个Bogen 3419就是我们楼下说的Manfrotto 454,那个thread里的最后一个贴也提到了.

Hi LongVoyage:
I have found some very useful threads from Photo.net. I think you can mount the focusing rail plate on the QR plate, and then mount it to a ballhead or a 3-way panhead.It seems that Bogen 3419 Micro Positioning Plate to be the best focusing rail.

http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=000Zuq

老中医:

这要看你的三脚架的头是什么了.M那个玩意只能接在非快装板的头上,而你贴的那一个好象本身就是一个头.

I WILL BUY A MANFROTTO 454 FROM HK THIS MOUNTH.
I SAW IT IN MANFROTTO'S BROCHURE.
IT IS PERFECT!PERFECT!

To:GuangJiao and LongVoyage,
谢二位大侠，不知Bogen的那个Macro Positioning plate 好用否？毕竟和Adoroma 的focusing rail差了近80刀。Thanks! ADORAMA’S FOCUSING RAIL AS FOLLOWS：To: Macrobug
Mini Trekker 放俺的N70 和朋友的F4外加一大堆头没问题，80－200/2.8,105/2.8MACRO,50/1.8, 24/2.8,TAMRON的大鸡肋。外挂俺的BOGEN 3221 WITH 3055 BALLHEAD 不行，太沉了，看来还得买个STRAP OR BAG。白天背着他在城里溜达稍微有一点。。。可单肩包背着太累了。

HAPPY SHOOTING！

再来一个图:LOWERPRO OMNI TREKKER

也说说Mini Trekker吧。Trekker系列看起来不错，不知用着如何？够用吗？这个mini的能不能那个daypack呀？

I try it.

比如说,你刚才贴的这个是介绍454的网页的LINK
http://www.manfrotto.com/products/index.html?doc_from=home

打开这页后,把MOUSE移到那个图上,RIGHT CLICK,选PROPERTIES，你就看到了图的LINK 在Address(URL)那一行了，注意结尾应该是.JPG,.GIF或.BMP等图象文件的后缀名．

比如刚才那个４５４的图的LINK是
http://www.manfrotto.com/products/graphics/prodotti/454_itm_img.gif

按LV找到的美刀价,估计在香港的售价:

468 HKD1800
469 HKD2000
454 HKD600

    

如何找图的LINK?比如要贴满浮土454图片,如何操作?请详细道来.
THANKS!

刚才在ADORAMA查了一下价,

468  $218美刀
469  $249美刀

454好啊.才$69.00.

guangjiao:
重点是找到图的LINK,而不是网页的LINK.

454应该不会太贵.

上次到店里准备去找个头给055CB,然后把308RC就单给单脚架434B用了,结果看到468RC觉的很不错,把玩许久想搞下来了,觉的应该最多就两个半308RC的钱吧,结果一翻价钱 359加刀,原来是两个055的价. 469只剩一个,盒子上价钱掉了. 后来就又拿了一个308RC回来了.

469 BALL HEAD - PROBALL SUPER


469RC BALL HEAD - PROBALL SUPER - W/QUICK RELEASE PLATE


468 BALL HEAD - PROBALL STANDARD


468 PROBALL STANDARD - W/QUICK RELEASE PLATE

其实454应该不贵,估计约1000人刀之内,比尼康的便宜.

LV:

不如把468和469球台都贴上来,让大伙瞧瞧,很不错的东东.
怎样成功贴图,说来听听.

MICRO POSITIONING PLATE 454



Ideal for macro photografy to make precise positioning movements to achieve the perfect framed shot, for QTVR and other precise copy/repro work, this plate has finger-tip control for hairsbreadth- but with a simple lock-release lever for fast set-up.
The two plate can be interlocked at 90° for full lateral/forward/back movement (over 120mm). In extruded aluminium, the plate has 1/4" and 3/8" holes and screws for tripod and camera mounting.
Compatible with the following type of heads:

Ball Heads 468, 469
3D Heads 056, 115, 141
Video Heads 128LP, 128RC, 128RCNAT, 136, 200

Ball Head 469 可是奇贵顶两个半055  

在MANFROTTO网页里的PRODUCTS,选择PLATES AND ADAPTERS的PHOTO,
点击MANFROTTO CODE里的454即可.
我试一下贴图,不成就请其他泡菜帮忙

不合规外链图片,不直接显示，谨慎点击

GuangJiao DX:
谢谢，能给贴张图吗？不好14，俺没找到。

多给你一个参考:MANFROTTO 454 MICRO POSITIONING PLATE
个人以为其经典,美观.
具体可看满浮土的网页,上面有详细文字介绍并附图.
http://www.manfrotto.com

谢西老！价格目前不祥。可能约＄120。

是的，它的knobs是有点松动的，不是很严密的，不过俺觉得不影响使用的，俺买的时候是0.6?k，可以参考。

A guy said about the Velbon focusing rail: There was some play in the knobs. You can actually had to move the knob a little before the rail would move.
So what do U think,西老？
Thanks for your reply!

微距镜头就是这样的，内置了一个近摄接圈，虽然表示是光圈变了，但景深还是f/2.8的景深，只是有效进光量变了。好象只有NIKON的AF机才会显示实际光圈。Focusing rail买个Velbon的？除了前后可调，左右也可以调，比NIKON的好用。