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Old Oct 12, 2005, 5:44 PM   #1
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I shot this with a *istDS with an 85 1.8 SMC Takumar wide open. I don't get this kind of thing when I use that lens with a film camera.

I actually kind of like it, but why does it happen?
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Old Oct 12, 2005, 7:48 PM   #2
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You meant the lines? Thats what light does when it diffuses through small openings.

Try stopping your lens down as far as possible. You will see that the lights will have an even number of spikes coming off them.. I could be wrong but I am pretty sure it is the number of blades on the diaphragm.
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Old Oct 12, 2005, 8:30 PM   #3
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Hmmm.... shot these wide open. That's a pretty big opening. But yeah, there are eight blades on the diaphragm. And maybe, stopped down, I can get 8 spikes. I'll try it.




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Old Oct 12, 2005, 8:43 PM   #4
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I used the wrong term in my post. Its diffraction not diffusion. Go year 11 Physics !
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Old Oct 13, 2005, 11:59 AM   #5
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When I had my Pentax Spotmatic I bought a filter to do just what you got. Now I have a DS and haven't tried it yet.
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Old Oct 13, 2005, 9:04 PM   #6
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Tell me you didn't sell your Spotmatic. I love my Spotmatic F. I still shoot a roll of film in it every now and then.


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Old Oct 13, 2005, 10:30 PM   #7
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I bought my Spotmatic in 1966 while on R & R from Vietnam, but it finally died. I replaced it with three other digital cameras. I ended with the DS which I think is great.
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Old Oct 13, 2005, 11:23 PM   #8
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I bought two Spotmatics and a bunch of lenses at Freedom Hill PX just north of DaNang while in Viet Nam in 1968 and both of them are working just fine after hundreds of rolls of film.

I now use my MZ-S most of the time for film, but I do use the Spotmatics every once and a while and even the meters work on both of them.

I love my DS, but just can't break the film habit because it just delivers things my digital can not, especially using Velvia.

Tom
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Old Oct 18, 2005, 10:49 PM   #9
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I have an emotional attachment to film, I suppose. My dream is that "digital film" company will finally get their product to work, and make one that fits a Contax II.

Or even better, my Ikonta, with a 120 size sensor.

BTW, do you sneak in mercury cells from Canada, or do you use the "air cells" for the Spotmatics?





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