See if anyone here can help:

<www.rps.org/special-interest-groups/historical>

B

> On 28 Feb 2014, at 02:43, "David Mann" <dmann...@gmail.com> wrote:
> 
> I had a reply from the camera shop:
> 
> ---
> 
> Our in-store committee thinks it might be a copy-neg/slide from a litho 
> original, hence seeing all the lines from the pre-press screens used in the 
> print process.
> If not that, then we’re in the dark too.
> 
> ---
> 
> I'm interested to know what others think.
> 
> Cheers,
> Dave
> 
>> On Feb 28, 2014, at 12:27 pm, steve harley <p...@paper-ape.com> wrote:
>> 
>> on 2014-02-27 14:32 David Mann wrote
>>> Here's something the more experienced photographers might be able to help 
>>> me with...
>>> 
>>> Among these old slides I've been scanning are a handful of colour ones 
>>> which are not part of the Australian stuff.  A few of these colour ones 
>>> (but not all) appear to have a kind of halftone pattern.  See here for an 
>>> example at 1200ppi.
>>> 
>>> http://gallery.multi.net.nz/photo/771/
>> 
>> can you post a snip at 100%? the pattern as far as i can make it out doesn't 
>> have traditional halftone angles, and appears to be RGB, rather than CMYK; 
>> this would suggest it was shot from a display or some other transmissive, 
>> rather than reflective, source; what that could have been in 1951 i have no 
>> idea - is the actual slide from 1951, or is it perhaps a repro slide shot 
>> off of a video of the original?
>> 
>> 
>> 
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