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October 4, 1933
THE AMATEUR PHOTOGRAPHER ADVERTISEMENTS
IX
WRATTEN LIGHT FILTERS
As the result of extensive study of sensitizing dyes carried out in the Kodak Research Laboratories, both the speed and colour sensitivity of Eastman Panchromatic Films have been greatly increased. The new standards attained necessitated revision of the series of Wratten Orthochromatic Filters.
The two £CK” filters are the same as those previously supplied under these names. The K3 is now obsolete, the improvements in sensitizing having made it unnecessary.
Kl. A pale yellow filter which should be used when only a slight colour cor¬ rection is needed, or when exposure must of necessity be short. May be used with any of the Eastman Panchromatic Films.
Kl. A yellow filter giving full colour correction. For use with Eastman Com¬ mercial Panchromatic Film, Eastman Panchromatic Process Film and Eastman Portrait Panchromatic Film.
The two new filters are:
XI . A pale green filter for use with East¬ man Portrait Panchromatic Film by half¬ watt light or for Eastman Super-sensitive Panchromatic Film by daylightorarc lamp.
Xl. A deeper green filter for use with Eastman Super-sensitive Panchromatic Film by half-watt light.
These filters are not intended for use with a 16 mm. cine-camera for which special filters are supplied.
A leaflet “New Wratten Filters and their Uses” describes these filters more fully. It may be had free on application to —
KODAK LIMITED (WRATTEN DIVISION)
K1NGSWAY LONDON, W.C.2
COLOUR
Brighten your photographs with
TRADE
MARK
TABLOID
TONERS
BRAND
Simple to use on bromide or gaslight prints and lantern slides
‘TABLOID’ BLUE, GREEN and SEPIA TONERS ' TABLOID ' COPPER FERROCY ANIDE TONING CO M P 0 UN D (Warm black to chalk-red)
Send us a postcard for interesting literature, post free
Burroughs Wellcome & Co.
4, Snow Hill Buildings LONDON, E.C.1
Pho. 1539 COPYRIGHT
COOKE
‘AVIAR’
“THE ALL WEATHER LENS”
Cooke Aviar Lenses are fast enough and sharp enough for most everyday work with hand cameras. They are fast enough in portraiture to catch the momentary “still ” of the most restless sitter, yet bestowing that quality of definition so necessary for giving life to the picture. Their service is not restricted to picture making on sunny days. With them you can continue when summer has departed and the light is not rso helpful— they are indeed “all weather models.”
TAYLOR, TAYLOR & HOBSON, LTD.
LEICESTER LONDON
PLEASE MENTION “THE AMATEUR PHOTOGRAPHER” WHEN CORRESPONDING WITH ADVERTISERS.
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