hasselblad 30mm C internal filters. keep them on?

[ken_goto]

i just got my first hassel 30mm c fisheye lense. they come with 4 (blue, red, yellow and

clear) internal filters.

do you have to put one of them on when you take pictures? or can you take pictures

without?

does having transparent filter on and without make any differenses on the image?

and do you know what kind filter (filter #'s) they are?

thanks for your time.

ken goto

[diegobuono]

Yoy have to keep a filter alwais on. When yoy don't need a particular filter keek the clear filter on. The lens is calculated that way.

[john_amiet2]

. . . and keep your feet out of the picture! :-))

[hasselblad technician]

Ken,

 

In order to achieve proper focus, and to insure the best image quality, one of these filters must be used at all times. This is what Ernst Wildi wrote about this in "The Hasselblad Manual, fifth edition":

 

"The 180 degree diagonal angle of view of the 30mm Distagon does not allow placing accessories, filters or shades in front of the lens because they would cut into the field of view. The filter problem has been solved by making the front lens section removable and making space for small 26mm filters inside the lens. The filter is screwed to the rear of the front section. When the lens comes from the factory, a clear glass filter is in place. This clear glass filter, or one of the other 3 colored filters must always be there because it is part of the lens design. Image quality suffers without the filter. Four of the most common filters are supplied with the lens. Other types can probably be made up by a filter manufacturer, but remember that every filter must have the same thickness as the filters supplied with the lens."

 

The yellow and orange filters are for use with black and white photography.

 

The blue filter is a conversion filter, and should be used when using daylight type film with artificial light.

 

The clear filter is the "normal" filter, and must be used if none of the other filters are being used. This is the filter that you will use most of the time.

 

David S. Odess

 

Factory trained Hasselblad technician

 

www.david-odess.com

[ken_goto]

thanks, john, david and diego. you guys are the best.

ken goto