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It depends on the filter... The best way to figure it out (and if you're memory challenged like I am): take a reading with the light meter. Hold the filter(s) in front of the meter and take another reading. The difference is the filter factor.
Posted 3 months ago.
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Most of the filters I have give you the compensation factor on them. But if you have the number you can just Google it.
Posted 3 months ago.
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gman ...
I have the three filters you have asked about. The compensation will depend on the darkness of the filters. On mine it is:
red (-3), Green (-2) and Yellow (-1).
Tom
Posted 2 months ago.
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Thanks this helped. I had tried the putting the filter over the Luna Pro Meter before and can't remember why someone told me it would not be accurate. Keltic thanks for your guidelines - interesting I was adding exposure rather than shortening the exposure - this roll should come out very interesting.:-)
Posted 2 months ago.
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your right - you should be increasing exposure not shortening it if adding contrast filters. But as mentioned before, try testing with an exposure meter to see the difference in exposure compensation. If your filters are similar to the ones made by Rollei for TLR cameras, then the compensation should be something like this:
Red filter - (increase by 3 stops)
Green filter - (increase by 1.5 stops)
Yellow filter - (increase by 1 stop)
Originally posted 2 months ago.
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JAYSON BRINKLER edited this topic 2 months ago.
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@qman: Good to see you over here. Got any results from your Yashica? Would love to see 'em. I'll check your stream.
Posted 2 months ago.
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I just dropped off a roll will post once I get them back and scanned.
Jayson - I do have the Rolli filters so thanks for the guidelines! Looks like my inital guesses will be a stop under exposed across the board:-(
Posted 2 months ago.
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@qman: I just developed rolls shot with the Red filter. I shot them compensating 1.5 stops. Wish I had given it 3. They still look interesting and still need to contact print them. They are hanging next to me.
Posted 2 months ago.
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I use a yellow filter all the time and never compensate (for what it is worth).
Posted 2 months ago.
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@ndnbrunei:
Then you most likely are not exposing your film correctly. Fortunately, the difference is probably covered by your film's latitude. You'd only notice a problem if you were shooting near the edges of your film's ability to record detail. In theory, you should compensate for any filter that cuts light. In practice, you can generally get away with not compensating for light filters - most of the time.
Posted 2 months ago.
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Rollei made two strengths of yellow filters, the lighter of the two is only a 1/3 of a stop to compensate for so you could get away with not compensating at all for it.
Posted 2 months ago.
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