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  #61  
Old 9th January 2021, 09:51 AM
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CambsIan CambsIan is offline
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Default First attempts

Did the test strip and a few test prints last night, and although I say so my self, I'm pleased with the first results.

I have attached it all for those that are interested to have a look at.

The info about the lamp was pretty spot on, looking at the test strip I think there is very little difference between 15 and 20 min and no difference after 20 min, so have chosen 20 min as my exposure time.

The test prints were printed in a block of 4 (2x2) and as you can see the post box and the penguin, which were one above the other seem to be a lighter blue than the baubles and skates. Not sure if this is due to me not coating the paper evenly or maybe they were right on the edge of the area covered by the light, but think for the time being will stick to smaller prints.

I have ordered some of the paper recommended by Roy as a little bit cheaper than the paper in the kit, but have to say the paper in the kit is top notch and would have no problem recommending it.

As usual any comments or observations most welcome

Ian
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  #62  
Old 9th January 2021, 10:26 AM
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Hi Ian, they look fantastic. Are these more like photograms?

I'm also curious about the longevity of cyanotypes, so could you let us know about the colour intensity over time, please?
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  #63  
Old 9th January 2021, 10:43 AM
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Hi Marty,

Had to look up what a photgram was, but having looked it up, yes these are photograms.

My wife is a crafter and has cutting dies of all kind of things, all I did was place them on the coated paper under a piece of glass and expose.

I will let you know about the colour as time goes on, it's something that I have been wondering too.

Thanks for the positive comments,

Ian
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  #64  
Old 9th January 2021, 11:10 AM
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Really nice Ian - and congrats to your wife too - very cute designs!

Cyanotype is yet another of those things I keep meaning to try but keep putting off.
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  #65  
Old 9th January 2021, 12:42 PM
Mike O'Pray Mike O'Pray is offline
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Quote:
Originally Posted by Bob View Post
Really nice Ian - and congrats to your wife too - very cute designs!

Cyanotype is yet another of those things I keep meaning to try but keep putting off.
+1 to Bob's comments As I understand it these cut-outs for a photogram have to be cut in the reverse so to speak so it isn't as simple as cutting round a black piece of card In fact to really do other than simple photograms it's an skill you need to acquire or have nearby someone who does have the skills

Looking at the blues there does seem to be a very small increase in intensification at 25 mins which becomes quite noticeable to my eyes at 30 mins but I'd agree that 20 mins looks about the best but it is useful to know what a range of exposures gives you There may be occasions when a paler blue is called for

Well done, Ian

Mike
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  #66  
Old 9th January 2021, 12:44 PM
Terry S Terry S is offline
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Quote:
Originally Posted by CambsIan View Post
Did the test strip and a few test prints last night, and although I say so my self, I'm pleased with the first results.

The info about the lamp was pretty spot on, looking at the test strip I think there is very little difference between 15 and 20 min and no difference after 20 min, so have chosen 20 min as my exposure time.

Ian
Well, looking at your first goes Ian, I think that the kit has been well put together, as all the cyanotypes you've done, look spot on!

Going by the scans on the screen, I would agree with you that 20 minutes looks good for an exposure, which is also the exposure that I use with my lamp at the moment. So the lamp is obviously much stronger than the first one that I bought.

From the scans, I can just about make out the very slightly lighter ones, so I think it is a good idea to stick to smaller, or only slightly larger ones with your lamp.

I've been reading more, and have read about a guy in the US that sends out New Year cards, made from his cyanotypes, for which he uses a negative of some sort. That sounds like a nice idea and hopefully will be one I take up before next year. I've obviously got a lot of time to practice and decide on the negative or picture I'd like to use.

Anyway, keep going, have fun and keep us all updated.

Terry S
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  #67  
Old 9th January 2021, 01:15 PM
Terry S Terry S is offline
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EDIT: Just re-looking and although it's hard to tell on a monitor, but there may be a very slight difference between 20 and 25 minutes, so I might urge on the safe side and go for 25 minutes.

Terry S
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  #68  
Old 9th January 2021, 02:39 PM
Mike O'Pray Mike O'Pray is offline
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Just to clarify are these 4 prints each 2 inches by 2 inches such that if it had been one print then the limit looks to be a maximum of 8 x8 inches or does the gaps that I assume between each for cutting purposes make an 8x10 possible ?

Thanks

Mike
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  #69  
Old 9th January 2021, 03:28 PM
Terry S Terry S is offline
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Quote:
Originally Posted by MartyNL View Post
Hi Ian, they look fantastic. Are these more like photograms?

I'm also curious about the longevity of cyanotypes, so could you let us know about the colour intensity over time, please?
MartyNL: Yes, they are exactly like photograms, with the main difference being in the colour of the exposed areas along site the unexposed white of the paper the white, presuming that is the colour of the paper being used. Also, with a darkroom paper photogram, one could always change the black and grey tones with the range of toners available to us.

As for longevity of the cyanotypes, from what I've read, they are very stable, even when done on clothes like t-shirts, where they have to be washed. If there is any obvious fading, apparently if one puts the item in the dark for a day or two, the colour re-emerges.

Terry S
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  #70  
Old 9th January 2021, 03:31 PM
Terry S Terry S is offline
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Quote:
Originally Posted by Mike O'Pray View Post
Just to clarify are these 4 prints each 2 inches by 2 inches such that if it had been one print then the limit looks to be a maximum of 8 x8 inches or does the gaps that I assume between each for cutting purposes make an 8x10 possible ?

Thanks

Mike
Mike: Basing my answer on my lamp, I would think that any size image is possible to be made, by raising the lamp to the necessary height. And just like when using a flash, extra exposure would have to be given, because of this extra distance, with time being worked out with a few test strips, just like in the darkroom.

Terry S
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