30mm Hasselblad T* lens - using filters

[darin_lacrone]

I finally got my first 30mm Hasselblad lens. It's not the newest, but

a T* and I'm thrilled to have it. I am looking for info. on how to

use the little filters that came with it. There is a blue, a yellow

and an orangish red filter in the lid of the case. I'm assuming there

is a filter of some kind already installed inside the lens. When

would these others be usefull?? Are they for B&W photography only??

or would I be able to toss the blue in in tungsten light and the

redish in flouresent?? Is there a light loss factor to be considered

when putting these colored ones in??? Any info from an old pro out

there would be appreciated.

 

Thanks, Darin LaCrone Wichita, KS

[q.g._de_bakker]

Darin,

 

There should be a neutral, i.e. uncoloured "filter" in the lens, yes.

There always has to be either one of the filters or this neutral glass in the lens to maintain image quality.

 

The yellow and orange filters suplied with the lens are indeed for B&W photography. And you're right about the blue filter too: it is a tungsten to daylight conversion filter.

 

You do indeed have to compensate for the filter's density. The filter factor should be engraved on the filter's rim.

If not, the data are:

 

Yellow: 1.5x, 0.5 stop; Orange: 3x, 1.5 stop; Blue (11 DM) 2x, 1 stop; and Neutral: 1x, 0 stop.

[matt_m__toronto_]

the blue filter is actually the other way around...daylight to tungstein. :)

[andreas_carl]

Nope, it's Tungsten to daylight (converts Tungsten light for use with regular daylight films). Wonderful lens!!! I rented one for a weekend, here is a picture taken with the orange filter. If one is careful, one can hide the fish-eye effect...

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<img src="http://www.usmle.net/photos/PY-04s.jpg">

</center>

[larry_lambert1]

I must say, Florida is terrible as far as photography shops go. I can't find any wonderful stores that will rent these kind of goodies at all. And mail order/then return-it-before-it-appears-on-your statement-makes me more nervous than the rythm method.

[rashed_s]

This might sound sally, but I have on top of the lens case 3 filters, red, yellow and blue, there

should have been another one a clear filter.

 

Where and how these filters be installed on this lens, please?

[q.g._de_bakker]

Rashed,<br><br>The lens comes apart, and the filters are mounted on the rear end of the front part. That's probably where the clear glass is now.<br>There's a tab on the front-most ring. It is the lock release button/catch, and when you press it you can twist off the front part of the lens. You'll also notice red dots: twist the front part until the two dots line up. Then you can (carefully!) separate the front and rear parts of the lens.<br><br>There should always be a filter mounted, one of the coloured ones or the clear one. They are part of the lens' optical design, and image quality will suffer when you leave them out.