北京后海已经变成一个溜冰埸
本帖由移动终端发布

FILMS TESTED / DILUTIONS USED:

    Agfapan APX-100, APX 400 Full Strength and 1:1 dilution

    Fuji Neopan 400 Full Strength and 1:1 dilution

    Ilford FP4+, HP5+, Delta 100 Full Strength and 1:1 dilution

    Kodak TRI-X, TMX, TMY Full Strength and 1:1 dilution

    Note: All films were 135-36. Films were rated at the published ISO. Exposures were made in a Nikon F-3, and processing was carried out in a Jobo ATL-2+, 68 degrees F., rotation speed 75 RPM.

     

PREWET:

A prewet is NOT RECOMMENDED with Xtol Developer.---------------------柯达官网不推荐PREWET？待确定。



PROCESSING WITH FULL STRENGTH DEVELOPER:

Kodak states that Xtol will process 5 rolls of 135-36 in one liter of solution without the use of time compensation. (See Section in Time Compensation in the Kodak Instructions.) This equals 200 ml of developer per roll. All of the films listed, when developed in 200 ml of full strength developer for the times suggested by Kodak, yielded negatives with good maximum density and a full range of detail.

Since most Jobo film tanks will process with less than the 200 ml per roll required by Kodak, the next tests were carried out at the Jobo tank minimums, using quantities of 140 ml in a #1510 tank. In these cases, with the Fuji Neopan 100 and the Agfapan 100 and 400 films listed, there were signs of under development. The highest densities were low, and the film could not ever achieve the Contrast Index (CI) stated by Kodak.

The Kodak and Ilford films were a different story. Using 140 ml of Xtol full strength the results were comparable to development at 200 ml. (In making this comparison we considered a variation of 1/3 stop or less to be acceptable). Based upon these results it is safe to say that with Kodak and Ilford films you can process, with full strength Xtol, at the stated solution quantities for the Jobo tank being used.



PROCESSING WITH DILUTE DEVELOPER:

Kodak's charts show dilutions of 1:1, 1:2, and 1:3. Any film requires a minimum amount of developer in order to properly process. Less than the minimum amount yields thin negatives, lack of shadow detail, and low D-max. Conversely, a greater than the minimum amount of solution, when used at the same developing time, does not overdevelop the film.

With Kodak, Ilford, and Fuji films, 1:1 dilutions presented no problem when using 200 ml (100 ml Xtol/100ml water). When using the times shown by Kodak, the film reached proper density. No tests were performed at dilutions greater than 1:1.

With Agfa, dilute Xtol may be a problem. Processing at 1:1 with less than a 100% increase in total solution quantity showed reduced D-max and lower densities. It was not until we were processing one roll of film in 200 ml full strength developer plus 200 ml of water that the densities of the roll were approaching the process in full strength developer alone.

If you intend to try Xtol at 1:1 or greater dilution you should test for yourself to be sure that Kodak's suggested times yield satisfactory results for you. Also, test for developer quantity, since you may find that results at less than the 400 ml (200 ml full strength / 200 ml water) will work for you.

For further information it is suggested that you obtain the Jobo Quarterly issue for the first quarter of 1997.

烂石头这张是N+1冲的。

美女那张N+2，白墙那张，衣服都没东西了

很滑很舒服

冬日的京城
本帖由移动终端发布

N+2看来测的不准

4716

生了七个刚领证书

喜欢这种光照的感觉。。

KODAK CCD继续测试。。。

怀上了？

N+1的

N+2冲洗

许老：量杯到了。看着那个1升的杯子真想扣下一个。下午有空过来拿。或者明天也行。这两天有空。

上海叶片

手头也是一大堆罐子,可冲120的卷分别为1卷,2卷,3卷,5卷各一个,盖子都是轮换着用,应该没有这个问题.

不光X-TOL,用D76,Rodinal冲的Tri-x也会出现问题.相比之下,同样的操作条件,100TMAX就好多了.
ILFORD的卷厂家都不建议预洗,试过一次不预洗,天空显影不匀.

D76 1+1

盖子干不？我都是自然晾干，所以手上一大堆罐子。盖子里面的积水比较隐蔽。最近想用用xtol，在看文件。有提到不建议预洗，再研究。

到办公室一定看看。

酒是好东西，喝的难说，拍的更难说

听到好讲座，4个小时没停，和大伙分享一下，已经下载保存，绝对值得保存！

高@华教授的讲座:
1.毛@泽$东何以发动※※（http://t.cn/SJmMSS）
2.再探林#@彪事件（http://t.cn/SJeUFh）
两个讲座都是摄于2006年，香港科技大学“重读中※※民共和※※”系列讲座其中的两讲。

高华（1954.05～2011.12.26），江苏南京人，※※学家，中国当代著名的中※※史、※※※研究专家，其代表作《※※※※※※※※※——※※※※※※※※※※※》被赞“震撼无以言说”。2011年12月26日，高华教授在南京病逝，享年57岁。

Both film and paper are very sensitive to small quantities of water running across the emulsion. If a drop of water runs across a piece of paper or film before it is pre-rinsed and developed, the droplet area will be easily seen in the finished print or film.

要说有水,哪怕一滴,应该是没可能的,水蒸汽就不敢肯定了.用过的冲罐都是抹干,电吹风吹过,放半个小时才会再用.



我倒是有点怀疑预洗,120片子倒出来的水哪颜色实在是吓人

不论用什么显影液都先预洗,135的30秒到一分钟,120的3到5分钟.倒不是光为了洗去放晕膜,还为了显影均匀.难道真是这里除了问题?

让樊老费心了,敬礼!

冬日·景山公园·徕卡X1

影县你给的电影冬天的骨头很不错
但是看了也很沉重

许老：你用XTOL显影之前预洗不？

Both film and paper are very sensitive to small quantities of water running across the emulsion. If a drop of water runs across a piece of paper or film before it is pre-rinsed and developed, the droplet area will be easily seen in the finished print or film.

许老：片子上的条纹也有可能是罐子不够干引起的。

想起你的家乡菜，就只有流口水的份

乡村酒宴，开饭啦！
本帖由移动终端发布