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> Results From LED Enlarger Light Source |
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#1
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Results From LED Enlarger Light Source
Further to my posts on getting a large format enlarger and converting it to use an LED light source, here are some scans of some actual prints produced!
The first is one which I'm optimistically calling 'normal' contrast which uses both the blue and green LEDs on together. It does appear normal to me: The next print I made was with just the blue LEDs. As can be seen, the contrast is higher: And with only the green LEDs being used, contrast is lower: Steve. |
#2
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Very interesting, you seem to have been successful with this. I wish I was able to undertake such a project, my do it yourself skills are good, but I lack the electronics knowhow.
Well done Neil |
#3
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A bit of extra information:
The negative is 5" x 4" and is one of four I took on the first trip out with my home made camera a few years ago (yes, I only owned two film holders at the time!). It is not particularly exciting but is adequate to test the enlarger out. Prints are 10" x 8" on Ilford MG IV. Steve. |
#4
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Certainly a success. I can clearly see the difference between normal, hard and soft. The soft is very soft and the hard "punchy" to my eyes.
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#5
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The photographs you posted, which I could see earlier have now disappeared? All I can see now are little blue squares with a ? in them.
Neil |
#6
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Quote:
Steve. Last edited by Steve Smith; 29th July 2010 at 01:40 PM. |
#7
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Quote:
I am guessing that I can get about 1 to 3.5 for grades as I don't really know how to measure it. Others who have used blue LEDs say that about 3.5 is the limit with a standard blue LED so I think it's close. I don't think I'm that interested in knowing what the grade is anyway as long as I can adjust it to suit. Steve. |
#8
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How does the normal one look "in the flesh"? On my screen it seems just on the soft side of normal. I does not look flat in the least. Rather attractive actually.
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#9
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Quote:
The high and low contrast prints are too high and low for my taste which makes me think that I have enough variance in the system. Steve. |
#10
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Makes sense. I rarely need to print outside of the grade 2 to 4 band. With your system would you be able to add filters if you did need to cope with a difficult negative or raise the contrast?
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