Along in the afternoon on September 10 we will witness a partial eclipse of the sun due to the fact that on that date the moon will come directly in line with the earth and the sun, and for a few minutes will put out our light.

As it happens, however, the greater part of the United States will be on the side lines and will not see a total obstruction of the sun's light. The strip of country which will see a total eclipse comes close to the southern border of California and extends across a portion of Mexico, so the expeditions from observatories for the purpose of photographing the sun on this occasion will go in to Mexico.

Two of these expeditions will use 40 and 60 foot cameras with which they will secure images of the sun from five to six and one-half inches in diameter and which will be of special interest to the astronomer because of the prominences that can best be observed when the sun's surface is partially or totally covered.These prominences are great masses of incandescent gas that sometimes shoot out as far as 50,000 miles from the sun's surface yet appear to be no more than 1/4 of an inch high on a five or six inch image of the sun's disk.

The last opportunity to make such photographs was on June 8, 1918. And at that time several photographers secured interesting pictures though, of course, the sun's image was very small.

For anyone who wishes to secure such a record the following instructions may be of some help. Use the longest focus lens you have on your camera; stop it down to its smallest opening; set the camera in a position which will enable you to secure several images without moving the camera, by which we mean to include the sun at its highest point when the eclipse begins and also the portion of the sky over which the sun will travel as the phenomenon proceeds.

Place a G. Wratten or other dark yellow filter over the lens and make a snap shot exposure for your first image. Wait five or ten minutes and make another exposure without changing the film or moving the camera. Continue making exposures at regular intervals unitl the shadow leaves the sun.

An enlargement from the entire negative or a portion of it will be very interesting and any newspaper, especially one having a rotogravure section should be glad to reproduce it and give you credit - and that's good advertising.

An Improved Opaque For Commercial Work

Eastman Opaque in glass jars is an improved product that will be found specially suitable for all kinds of blocking-out on either film or plate negatives.

It has properties of elasticity that hold it together without cracking when it dries and this is a decided ad vantage, especially when negatives are used over a period of time.

One often finds the opaque badly cracked on negatives that are selected for duplicate orders and which require additional work to give a clean outline. Eastman Opaque in glass jars obviates these troubles, and is easy to use as its fine grain causes it to flow smoothly from the brush. Your dealer can supply you at the following prices:

No. 1 Jar, 1 ounce $ .25

No. 2 Jar, 2 1/2 ounces . 50

No. 3 Jar, 7 1/2 ounces 1.00

No. 4 Jar, 18 ounces 2.00

OUR ILLUSTRATIONS

Our illustrations represent a very small part of the Portrait Film display at the recent National Convention at Washington. The negatives were made entirely by artificial light. The main source of light was an arc lamp, the shadow illumination was from one of several 1000 watt lamps on the ceiling and the back lights and shadow effects on grounds were produced by spotlights.

The illustration on the opposite page is an example of how shadow effects can be produced on solid black grounds. And there is no limit to their variety.

Every one remarked at the quality of these negatives. But film users are securing similar results every day. It's just a matter of brilliant lightings and the non-halation film quality that preserves this brilliance in highlights and shadows.

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PORTRAIT FILM NEGATIVE, VITAVA PRINT

From National Convention.

Portrait Film Exhibit.

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PORTRAIT FILM NEGATIVE, VITAVA PRINT

From National Convention.

Portrait Film Exhibit.

Use Photographs To Advertise Photography

IT has always been our contention that if the photographer, especially the commercial photographer, is to induce the manufacturer or the jobber or the merchant or anyone else to use photographs he must use photographs himself.

This subject has been brought to our attention again by the receipt of the photographic business card of the firm of Burgert Bros, of Tampa, Fla., which we reproduce as a suggestion.

Mr. Burgert advises us that this card has been much more effective for their business than the printed or engraved styles and is made at very little greater expense and with the advantage of frequent change of designs.

The card is 2 1/2 x 3 7/8 inches and by printing eight to the sheet of

8 x 10 double weight, glossy Azo, a gross of paper makes 1152 cards. The prints are ferrotyped and in this small size are sufficiently stiff for an excellent business card.

A monthly calendar, entirely photographic, if made attractive enough and with the design changed each month so that you can show a great variety of photographic subjects is another fine reminder if sent to a selected list of customers and those you wish to make your customers.

And at Christmas time don't forget to make up a unique personal card that you can send to every customer with whom yon come in personal contact. Anything that keeps photography before your customers is good publicity and makes business.

Use Photographs To Advertise Photography StudioLightMagazine1923 236

A Commercial Photographer's Business Card

Use Photographs To Advertise Photography StudioLightMagazine1923 237

To keep the memory of that first school day - his photograph.

Make the appointment for Saturday morning.

The photographer in your town

THE SMITH STUDIO

Line Cut No. 314. Price 30 Cents

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PORTRAIT FILM NEGATIVE, VITAVA PRINT

By The Green-Crane Studio Kansas City, Mo.

STUDIO LIGHT INCORPORATING THE ARISTO EAGLE ESTABLISHED 1901 THE ARTURA BULLETIN ESTABLISHED 1906 Vol.15 OCTOBER1923 No. 8