Lens Characteristics and Specifi cations 261
then remove the converter from the camera. Never remove a lens from a converter that is not
attached to the camera.
Hasselblad Teleconverters
The Hasselblad 1.7 teleconverter in the H system can be used with all H system lenses
except the 28 and 35 mm wide angles and the 50–110 mm zoom lens.
The teleconverter can be used with the 300 mm f/4.5 lens but you must focus manually.
The auto focus cannot be used as it functions only with an effective lens aperture of f/6.8 or
larger. When the 1.7 teleconverter is used with the f/4.5 aperutre of the 300 mm lens, the
effective aperture value is f/7. 65 as explained later in the chapter entitled “Exposure with
Teleconverters.”
The Hasselblad 2 XE teleconverter for 503 and other V system cameras can be used with
all fi xed focal length V system lenses except the Makro-Planar 135 mm and zoom lenses. The
Apo 1.4 XE converter was designed and optically optimized for the Tele-Superachromat CFE
350 mm but can also be used together with the Sonnar CFi 250 mm, the 350 mm Tele-Tessars,
and the 500 mm Tele-Apotessar. For physical reasons, the Hasselblad teleconverter 1.4 XE can
be used only with lenses from 100–500 mm focal length (except the 135 mm Makro-Planar). It
also produces satisfactory quality with the Variogon 140–280 mm at all focal lengths and the
Hasselblad 60–120 mm zoom lens at longer focal lengths.
Focusing Range and Area Coverage with Teleconverters
The focusing range of the prime lens is maintained when combined with a teleconverter.
Combined with a 180 mm lens, we have a 250 mm (with 1.4) or a 360 mm (with 2) lens
that focuses as close as 5 feet, much closer than a telephoto lens of the same focal length.
A converter can therefore serve as a close-up accessory instead of an extension tube. The
120 mm Makro-Planar, which focuses down to somewhat less than 3 feet (0.8 m) and covers
an 8-in.-wide area, covers an area as small as 4 in. (100 mm) when combined with the 2 XE
converter.
Image Quality with Teleconverters
Because teleconverters magnify the image, they also emphasize quality faults in the basic lens.
They can produce good quality images only if combined with a high quality lens, which is no
problem with the lenses in the Hasselblad H or V camera systems. The image quality of a con-
verter also varies depending on the lens and lens design with which it is combined, but all
teleconverters made for Hasselblad and used with the recommended lenses produce a sharp-
ness that comes close, or even matches, that of an equivalent longer focal length lens.
Exposure with Teleconverters
With any 2 converter, the light that reaches the image plan is reduced by two f stops. A
1.4 converter causes a loss of 1 f stop, a 1.7 converter, 1½ f stops. You must compensate
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