free ebooks

The Barnet Book of Photography A Collection of Practical Articles

The question of retouching is a difficult one


For

normal exposures take 3 parts No. 1 and 1 part No. 2; to each ounce of mixed developer add 40 minims of No. 3.

PYRO AND SODA. 1. Pyro 1 oz. Water 70 ozs. Nitric acid 12 drops

2. Sodium sulphite 10 ozs. Sodium carbonate (pure) 8 ozs. Water 70 ozs.

Equal parts of each, for soft negatives dilute with water. To restrain for over-exposure use potassium, not ammonium bromide. Unless an acid fixing bath is used the negatives are rather green in colour.

RODINAL AND HYDROKINONE.

A. Sodium sulphite 1 oz. Water 20 ozs. Citric acid 1 crystal Potassium bromide 1 dram Hydrokinone 2 drams

B. Potassium carbonate 2 ozs. Water 20 ozs. Rodinal 1 fluid oz.

Use 1 part A, 1 part B, and 1 part of water.

The question of retouching is a difficult

one. There is no doubt that a certain amount of it is necessary on nearly all portrait negatives and even on those of children. But it is equally certain that the great majority of portrait negatives are over-retouched, so much so that their value both as portraits and pictures is nearly destroyed. Yet a certain amount is necessary even for pictorial effect, and perhaps still more when the question of likeness is considered. For as a rule the untouched negative is no more a true likeness than the over-retouched one. The truth lies somewhere between the two. Even if isochromatic plates are used the little differences of colour in the face, and the incipient wrinkles are exaggerated in an unpleasant way. Under-exposed negatives will show these defects in a very marked manner, full exposure will greatly reduce them. Large heavy patches of shadow may be lightened by coating the back of the negative with matt varnish, and when it is quite hard "hatching" upon it with a soft lead. Harsh lights may be reduced by scraping away the matt varnish with the point of a knife. In some cases the matt varnish may be stained with a little aurine or uranine. Exaggerated lines and small shadows must be worked upon from the front and a retouching desk is necessary. The film of the negative will not take the pencil without some preparation. The best surface is obtained by spreading a little retouching medium with the tip of the finger on the part to be touched. A thin film of soft resin is left upon the plate which takes pencil marks readily. A hard lead, No. 4 Faber or Hardtmuth, should be used. The loose leads used in what are called the "ever-pointed holders" are most convenient. The point must be very long and fine, like a large darning needle, and is best made by rubbing the lead on a piece of fine glass-paper. The pencil must be held very lightly and the lines touched away with short _light_ strokes, a heavy stroke only rubs the medium up.


eBook Search
Social Sharing
Share Button
About us

freefictionbooks.org is a collection of free ebooks that can be read online. Ebooks are split into pages for easier reading and better bookmarking.

We have more than 35,000 free books in our collection and are adding new books daily.

We invite you to link to us, so as many people as possible can enjoy this wonderful free website.

© 2010-2013 freefictionbooks.org - All Rights Reserved.

Terms of Use | Privacy Policy | Contact Us