看到暗房作业的片子就心情舒畅阿，请教下 这个4边尺板 如何每次能迅速准确的把相纸定位好呢？ 就是上下左右能均匀的留边，画面准确位于相纸中间呢？   谢谢哈  ，困惑已久 每次调都感觉好麻烦，因为还涉及到底片在底片夹上的倾斜等因素

把相纸的灰度条打全了.挑满意的挂着,或者沁完水挂着当比较,比老压的片子实际.
那月生可是费尽了暗房手段的产品.应该和原底片差之千里哈.直接拍是出不了的.咱们管那叫废底片了.人家手艺好,废片做成世界名片了.
做那样的片子应该和个人心气有关.不探索还真出不来的.
俺发现,相纸显影液上还真要多下工夫研究.胶片显影大概齐就差不多了.俺以前方向不对路子哈.纸上润温黑和高瓷白还搞不好.不吸引眼球哈.
搞不懂.老亚一生几万张底片,结果还就那么几十幅传世.俺脚的,总有几千幅哪.

泥糠也挺锐的.

俺曾经把定影液当浓缩冲纸液补充了点,觉得显影时间不对劲了才发觉.后来加了爆光,就合这一盆药了。片子也能看.很高调哈.

考虑要不要XTOL，准备工作先行

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.



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.

备忘

Expert Drum Chemistry Usage for Most B/W Film Developers（staring point)

Drum Format 1 2 3 4 5 6 7 8 9 10
3004 5 X 7" 270 270 270 340
3004 8 X 10" 270 400 600 800
3004 8 1/2 X 12" 270 480 720 960
3005 5 X 7" 270 270 270 340 425
3005 8 X 10" 270 400 600 800 1000
3006 4 X 5" 210 210 210 210 250 300
3006 5 X 7" 210 210 255 340 425 510
3010 4 X 5" 210 210 210 210 250 300 350 400 450 500

备忘：

Rinse water volumes:

If the chemical Then the minimum rinse
volume is between: water volume is:

40 ml - 260 ml 260 ml
300 ml - 470 ml 500 ml
540 ml - 600 ml 600 ml
600 ml - 1000 ml 1000 ml

摘自JOBO官网。

水洗水多了不太好。

ATAR 240在手上有几年了，很少用，今日才发现是我手上最锐的一只镜。

有机会了买本拜读一下，我是喜欢乱翻书

是啊，偷懒肯定会有教训，一次不这样打试条都不行。基本上初步试出曝光时间后正负2秒共5条试条是必须的。试条很费时间。还有就是水里看片子，还得再练，现在经常看走眼。

墙上挂了亚当斯的月升做参考的。反差真是好，什么光线下看都顺眼。我的还达不到，继续努力。

今日冲45叶片，最后一道工序放叶片入浸润液，边上有一满杯定影液，顺手放入。郁闷啊。暗房里良好的习惯很重要，这个定影液平时不在这个位置的啊

据说这本全面，而且是 step by step

http://www.amazon.com/exec/obidos/ASIN/1902538021/blackandwhi0d-20

很多重要的暗部和亮部，俺不怕麻烦，局部一秒一秒的试条，尤其是人像的脸。费劲啊。

暗房里挂几张标准的相片，比较着来嘛。
找个看片高手在边上，两人商量着干也行啊。
那个TMAX药只能用在本家上？
俺看很多人都乱用着。

备忘一下，今天差点买TMAX显影液，忘了它不适合页片了

You can use T-MAX Developer to process roll sizes of
KODAK PROFESSIONAL T-MAX Films and most other
black-and-white continuous-tone films. Do not use this
developer to process sheet film.

快晕死在反差上面了。一般的观看片子环境光线都不是很理想，需要高些反差看才合适，老是拿捏不准。今天架起那个持续光源看片子感觉就是不一样。测了一下片子上的EV，不到10的样子。这个几百块的东西看来不会闲置了。

谦虚了吧

婶：目前还不能熟练放出一张反差顺眼的片子，等过了这一关我再玩其他花样。

您玩暗房玩的比张左更好哈。
他放人文的放惯了。自己也不用大幅机器，放大幅片子，可不有些受限制了嘛。经历决定了成就哈。
就是靠一手八爪鱼加减光弄得熟练，所以有点名气。
俺们电力公司在北二外的变电站俺常去巡查，老看见北二外的小MM们不正经。。。不敢招惹的。
那个LITH显影原理上是多爆并极稀液慢慢泡。半显影半镀银的整。以前用普通显影液（老液兑水）加毛子碳素纸试验过，十张出不了一张能看的哈。看来还是显影液有问题。
您给扒扒那个配方吧。

10年也经过这里，就掐了张数码

红头灯看片子很正点

买了。昨晚粗看了一遍。翻译未得其精华，西式大餐弄成了猪肉炖粉条，调料却是西式调料。婶边上配上北二外的MM，翻译出来绝对的比这本地道

老外暗房师玩的比张左好！准备好好看看这本，看着文字YY一下人家怎么玩的。

就公元2#纸.把底片直接放在纸上黑白都合适的话,这个就是好底片.

这书有，没看出所以然来哈。

呵呵，我就是个器材贩子，没事总想着上个啥的，以前买样东西能拍上一段时间个把月的，现在买样东西最多试半天就搁下了，有时没拿到手就没兴趣了喜欢在暗访里面倒腾。不知道拍什么，烧器材的恶果

刚装好8张45，两个罐子冲洗。一直很晕相纸上的反差，什么才是2号反差。合适的底片要在2号相纸上有上好的表现，一直没有做到这点。反思。拍之前的预想跟相纸上的表现还对不上号，继续努力。

教授的暗房毒气太大，很想进来，可又不敢，只好天天隔着暗房的玻璃窗偷偷流口水。

放一张45片子，角上有点水渍，照样放出来水渍来在片子上。看来晾干时没有捋干这个角的水就夹住底片悬挂晾干了，下次纠正。

下午1：50配好药水，第一张试条就烤糊了；古筝曲子真好听。前两天可能把ILFORD显影液当成D72用了，1+2也行哦。

有感觉！！！！！！！！！！！！！！！

扫了一张片子，片夹里面放了两个月才冲洗的。印迹不知道哪里来的？