第一是自己用过,第2是大部分的人也有同感,但负片电分确实不如反转.这是另一个问题了.

反转宽容度低,夜景光比又太大!难以把握!

反转片拍夜景如何不行呢？愿闻其祥

请教山水兄，负片宽容度比正片大是人所周知，但负片色彩比正片好，请问是你的亲身经验，朋友述说，还是经出何典，小小愚钝，还望指点一二，先谢了

在上海郭老处见到郭老，总理和梁子，非常高兴。谢谢总理和梁子百忙中抽出时间见面。遗憾的是时间太短了。

明天到韶关四天!

615试机片，颐和园小景。

10.1计划到上海,再加休假可能20日左右回北京了.

恭喜!
其实木机精度并不低,只是操作过程的心理因素而已~!
大风是所有大幅机的敌人,不论木或金属机.

哈哈，新人报道，刚上了horseman woodman 4x5，加了个612后背。不过总感觉木机精度不够，不过我看中的是重量轻，1.45KG，移轴俯仰都有了。拿到后去庐山试拍，勉强没有失败，呵呵

成敏兄：
　　据去过新疆的摄友说，新疆那地方在秋季是一天一个样，今天看还是好好的，但明天再来这地方，就可能不一样了。
　　我不知道是不是这样。如是，那对拍摄可真是有点一寸光阴一寸金的味道了。

谢谢waiwai兄，看来我们会错过最好的时候。没有假期，只好如此了。

成敏兄，我们是17号才出发去新疆。你说的是不是喀纳斯湖？10 1还有黄叶子，不过颜色可能不是太润。天气已经很冷了，一早一晚必须穿羽绒服。早上会结霜，不一定会下雪。

总理：※※庆也去新疆逛逛。

这次主要用617拍!可能要家里人客串一下了!

成敏兄：
　　国庆你已有安排了？

枪手兄：
　　你去小鸟天堂好象有几次了，祝你这次有“好运”,“待兔”大有收获！

国庆我在小鸟天堂“守株待兔”！

不知道国庆期间格拉司湖是否还有黄叶子，下雪了没有？

顶顶!

WAIWAI去新疆了吗？

Alco75兄：
　　我也是个英盲。看不懂那些洋文。

随兄的机器蛮酷.
Z兄渊博!再爆点儿猛料吧.中文的,洋码子是天书,惭愧.

Alco75兄：
　　“迪尔多夫”是美国的名机。据说亚当斯也对他情有独钟。

　　“迪尔多夫”的※※大概是：
　　　迪尔多夫父子公司的创始人“拉本.夫.迪尔多夫”出生于1862年美国俄亥俄洲的一个小村庄里，自小就动手制造生活以及工作上所需要的用品。1882年迪尔多夫去了芝加哥. 先在保险公司工作,后他又连接着换了几种工作，直到他加入了一家摄影公司.在这里他一展他的所长,由他修理并改造的相机被当时的罗杰司特光学公司(Rochester Optical Company)所购买.在1885年至1900年间他发明了一种可调整像差的人像镜头并注册了专利.之后在1904年他又发明了一种利用镜片反射原理的卧式放大机.1904年他与伊司曼柯达公司合资成立了一家修理厂.三年半后在他的儿子米勒.司.迪尔多夫的帮助下他们开始独立经营镜片加工的生意.1920年商业摄影的潮流使的他们转移了当时的焦点.他们利用手头上现有的一些工具尝试生产大画幅木制相机.全部的木材精挑细选并采用手工刷漆达至钢琴表面的效果.上漆的过程必需严格控制温度,这在寒冷的天气下进展缓慢.在艰辛下他们用手工制造的方法完成了十台桃木相机.获得了空前的成功，之后他们生产的相机供不应求.

　　三年后他们开始生产5X7片幅的相机.1932年他们又推出了11x14影室机型.1945年，“二战”的爆发．为”迪尔多夫”相机的发展提供了契机，美国※※购买了大量的迪尔多夫相机.在1949年美国※※又向他们订购了353台8x10相机.这使的他们的业务蒸蒸日上.但是由于家族成员们的逝世.迪尔多夫的生意逐渐走向下坡.到1970年只剩下一个合伙人.小迪尔多夫先生(Mr. J.M Deardorff)力图中兴衰落的买卖.虽然公司的财务状况良好,但是由于技师们缺乏对相机的认知性使得进程艰难.

　　以后“迪尔多夫”便渐向“关门”了。

　　现在，很多想购买的用家发现在市场上存在很多种类的Deardorff相机.这是必然的, 尤其是它全手工制作的过程以及三父子各自对"相机"的认知性.像其他厂家一样相机的配件是批量生产,因此下批货可能又有了一些改良.这使的每一台迪尔多夫都是与别不同的.它的生产年份可由刻/印在前镜板的编号辨别。型号有“V4”，“特别4x5” 编号由100始， 1951年二月开始生产。 “V5”5x7 编号100始，1950年十二月开始生产. “V8”8x10 编号500始，由 1950年五月开始生产。 “V11”11x14 编号100始,由 1953年开始生产。

　　我是英盲，下面可能是说的这事：（如果错了，谨请别见笑！）

History of Deardorff
The following quaint piece of photographic history was prepared by Merle S. Deardorff, probably about 1983, and printed under the Deardorff letterhead.

Mr. Laben F. Deardorff., the founder of L. F. Deardorff & Sons, Inc., was born in Preble County., Ohio., on a farm near Eaton, on December 31., 1862. He and his family belonged to the Church of the Bretheren (Dunkards) and were "plain people" living off the land and observing all of the strict rules.

The Deardorffs raised flax and wool from which they made all of the cloth for their clothes. They also made the looms for weaving it. They had a blacksmith's shop for making their own tools and shoeing their horses, a cider mill, and a corn and feed mill which was run by horse power. They also had a saw mill With two five foot eight inch circular saws capable of splitting a log five feet in diameter, which was run by a forty horse power stationary steam engine. This engine was also equipped to make shingles and do the millwork to produce high grade lumber. Their furniture was nearly all homemade, they pegged shoes, blocked hats, and took care of most of their personal needs. Most of the food for the approximately 30 employees who ran the mill, was raised on the farm. Their back yard was equipped with two very large Dutch ovens, and a large kitchen for putting together the meals.

Laben was raised on the idea "if you need anything, make it yourself", from which he became very inventive. All his life he had a creative mind, and was continually thinking of and making new things. He graduated at age 18 from high school and almost imediately bought a new suit which was his first that was not home spun. He also had his picture taken, which was not looked on favorably by the Dunkards. On presenting a print to his favorite aunt, who was then quite old, she remarked in her down-home drawl, "Now Laban you shouldn't have done that; those photographer fellows go into a dark room when they do their work., and people that's honest do their work out in the light."

In the late 1870's the mill business became very depressed, and they had a fire which made it very difficult to operate successfully. Because of that, in 1882, at the age of 20, Laben decided to go to Chicago.

He wanted to be a business man, so he took a short business course, then got a job and went to work. He worked for an insurance company; then an elevator company, each for about a year. He then worked for Gayton A. Douglas, who had the first amateur photographic store in Chicago. This was the opportunity he needed so he could use his inventive abilities since he could repair and make changes in the cameras, which he did after hours.

Laben combined part of a camera made by Scovil Manufacturing Company with one made by the Adams Company. Douglas sent this to Scovil, and they made it under the name of Scovil Triad. He gave one of his designs for a view camera to a man by the nam of W. F. Carlton who was in a position to make the camera. Carlton gave him a 6-1/2 X 8-1/2 camera for the designs, and later sold them to the Rochester Optical Company. They produced the camera and called it the Premo View. Rochester sold their photographic business to Eastman Kodak, who then made the camra until about 1910.

During the years from about 1885 until about 1900, Mr. Laben F. Deardorff worked for several companies including E. & H. T. Anthony, and Sweet-Wallach & Company, which later becam the Eastman Kodak Store. During this period he became very much interested in Lenses and had Bauch & Lomb make changes in the Zeiss series II to make it more practicle for photoengraving. These characteristics are still used in all process lenses. He also invented a Petzval type portrait lens which had adjustable separation for changing the shape of the field. On applying for a patent, be found that Ernst Gundlach of the Gundlach Optical Company had just patented it. Mr. Gundlach gave him the patent, and Mr. Deardorff had the lens made and sold it for a number of years. It was used for all of the official portraits made at the World's Fair in St. Louis in 1903.

Just before the turn of the century, Laben Deardorff went into the supply business and later, about 1904, also did commrcial photography. He built the first bromide enlarger in Chicago, which was a horizontal type, projected into the darkroom, had the negative carrier in the wall and an arc light in another room. The light was increased by a set of mirrors mounted around the arc and adjusted to reflect on the negative.

In 1909 because of a depressed condition and the fact that the Eastman Kodak Store wanted him to work for them., he sold out to them and ran their repair shop for three-and-a-half years. The store decided to close the repair shop, so he event into partnership with a man named Heyer who repaired surgical instruments. Heyer was an older man, and after about a year he sold his share of the business to Mr. Deardorff who then ran it alone repairing photographic equipment, microscopes, and some other equipment connected with the medical profession as well. By 1917 his son, Merle S. Deardorff started to work for him and he began to repolish photographic lenses. For a number of years this work became a very important part of the business. About 1920, the old Premo View cameras were about gone and the commercial photographers began demanding that we make them something. Mr. Kaufman & Fabry and Mr. Erickson of Chicago Architectural Photographing Company advanced the money for cameras. We had bought the C.J. Olstad Camera Company and tried to make them there while we ran our place in the Chicago Loop. But it did not work. A decision had to be made to move to the Olsted place or give it up. We made the move which cost us our amateur repair business, but was an advantage to the professional.

Two other sons, James Russell and John Milton were with us by that time, so Mr. L. F. Deardorff had the ideas and experience and the sons supplied the cheap labor. The Olstad place consisted of an obsolete saw, planer and sanding disc, plus a good jointer. It was about two thounsand square feet in an old wagon factory with an old volcano stove ans a shut-off valve so the water could be shut off at night to keep it from freezing. We partitioned off a small space for our engine lathe and polisher and started to make cameras. Ten were made in the first lot. JM & JR did the woodwork amd MS made the special screws on the engine lathe. The big problem was work normally done on a punch press had to be done by hand. Because of the small volume and the cost of dies, MS scribed these on sheet metal and chisled them to the lines in a small vise. Mahogany was another problem. There was not enough money for new wood, so L. F. found a lot ot bar tops that had been scrapped because of prohibition. From these the first ten cameras were made. The mahogany was good, but it contained too many nails and screws. The cameras were hand finished, including the laquer which was hand brushed and polished to a piano finish. The metal work was polished and rubbed with French emery so the finish was the same as that of a microscope. These were very hard days. In winter it was difficult to raise the temperature to 65 degrees. At night it would often go below freezing. One morning it was 13 degrees below zero in the shop. No work was done that day. The ten cameras were sold long before they were finished, so we decided to make an additional fifteen.

We went to several dealers to see if they would be interested, but they told us the camera was too wxpensive. One dealer said he couldn't sell an 8xlO View Camera for $150.00 if it was made of gold.

We bought the screws for this lot, but made the punch press parts by hand. The third lot had punch press as well as screw machine parts, and was also sold before completed. The dealers then came to us for cameras. By this time things were better. We overcame the heat problems with two more stoves, bought some new machinery, and a party gave us an air compressor, spray booth and a paint spray gun.

About three years later the 5x7 camera was designed and offered for sale. In 1932 the Commercial Series studio stand was developed and a year later the lixl4 Commercial Series studio camera. This outfit made it possible to illustrate merchandise much more efficiently and made Considerable improvement in that business. The navy also found it very practical for their use.

In 1935 the business was moved to 11 South Desplaines Street. This space was much more efficient than the old one and gave us room for the expansion that was needed. The period from about 1935 to 1945 was very difficult. Because of the depression it was hard to exist even though a fair amount of sales were made. Mr. Kellsey, son-in-law joined the company and pressed the idea of a hand camera with swings. The Triamapro camera which was made from 1936 to 1947 was developed for this purpose. Mr. Kellsey was also very anxious to write a book and after spending much time, effort and money, finally brought out "CORRECTIVE PHOTOGRAPHY." The business was incorporated in 1945 and during the war period we sold many cameras to the government. In 1949 the Air Force gave us our largest order for 353 8 X 10 View cameras, carrying cases, tripods, focusing clothes, and lenses. After the war we discontinued the Triamapro and the small 4 x 5 camera which was brought out about 1940. In 1954 the Portrait camera was developed and placed on the market in 1955. Our most prosperous years were 1956 and 1957 and left us in a very strong position, but from 1958 to 1970 business was very poor.

Some very interesting devices were developed during this period, such as the tax map projector which is in use by Sidwell of West Chicago, Illinois; the Criminal-Identification camera, which was made for the City of Chicago, but sold all over the country, the criminal evidence camera for Chicago, and the Aerial Map Projector for the Army Map Service at Washington D. C. The Army lklap Projector was so large it had to be cut down to fit the largest highway trailer.

Mr. L, F. Deardorff died in 1952, Mr. Kellsey in 1962., J. M, in 1969, and J. R. in 1970. This left the business with only one of the original partners.

During the early 1970's business picked up rapidly,, particularly in View Cameras; and because of the lack of experienced help, it was decided to concentrate on our standard equipment rather than special orders. It became necessary to move again, and although the business was in good financial condition, this was very expensive and caused a lack of capital for several years. Mr. J. M. Deardorff, Jr. joined the company with the idea of eventually taking over its management. It has been very difficult during this period because it was necessary to organize production so it could be accomplished with people who have developed the necessary skills, but do not understand the camera. This requires volume and may cause great difficulty when business is slow. The company is capable of producing more View Cameras than ever, so now we are planning to make the 11 X 14 View Model, and then some of the heavy equipment. With this organization, we feel we can still supply what we believe to be the best equipment in our field.

*****************************************

We received a note from Tom Connolly ([email protected]) in May, 2003 regarding the fate of some of the cameras Deardorff made for the military in the 1940's.

In 1997, Mr. Connolly attended a sale at the Stratford Army Engine Plant in Stratford, Connecticut. The plant had been transferred to the Air Force in the 1970's, and was closed in 1997 due to downsizing. Mr. Connolly bought a box of photo equipment, which included an 8x10 Deardorff with a number of lenses. Another Deardorff was sold to another customer at the sale. One of the sales people told Mr. Connolly that most of the other cameras were still in the photo labs at contractors such as Sikorsky, Pratt & Whitney, etc., or had been sold off at previous sales.

。

我个国产的8*10的木机。最短可以用１２０的头，最长可以用到８００的头。

北京万得年初有一台，你可以与他们联系联系的。负责人；郑杰。电话：０１０８４０１１８８３。手机：１３６１１０１５２７８。网址：http//www.wandephoto.com。

随兄:正是.
Z兄:看着喜欢,感觉亲切!可惜它真的就是不属于我.
请仁兄再仔细介绍介绍,有了解的朋友也请帮忙丰富一把,先谢了!
国内哪能找到?

Alco75兄：
　　保养的非常好的一台“迪尔多夫”。这种美国机器曾是很多“国际著名摄影家”的装备，出过很多“世界级名片”，既是现在也还有很多人喜欢“她”。
　　当然，和很多“出名……”一样，“她”也少不了仿制品。

不错啊，是迪道夫吧。

我几乎不用负片,滚桶扫反转的效果是最好的,对负片还是有点难度,印刷上肯定要打折扣的

继续.