[pure-silver] Re: Hubert Grooteclaes
- From: Don Sweet <don@xxxxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Thu, 24 Feb 2011 09:03:35 +1300
Thank you all for those helpful responses. It is diffusion in the shadows
that gives the effect intriguing me.
Here's Hubert's view of Ralph Gibson at work
http://www.hubertgrooteclaes.com/cache/photos/4ccc7dbb9b745.jpg
Don Sweet
----- Original Message -----
From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Thursday, February 24, 2011 4:50 AM
Subject: [pure-silver] Re: Hubert Grooteclaes
>
> ----- Original Message -----
> From: "Eddy Willems" <eddy@xxxxxxxxxxx>
> To: <pure-silver@xxxxxxxxxxxxx>
> Sent: Wednesday, February 23, 2011 2:24 AM
> Subject: [pure-silver] Re: Hubert Grooteclaes
>
>
> > Hubert had an old portret enlarger lens, wide open it was
> > soft like you
> > see in his pictures,
> > at the end of his life he was printing his old negatieves
> > again but this
> > time very sharp
> > and yes he worked with color pencils on his prints
> > best regards
>
> I am on my dial-up right now so looking at the images
> is really not possible. However, FWIW, soft focus lenses and
> diffusers tend to spread out bright areas of the image. When
> used on a camera they diffuse the highlights mostly,
> spreading them out. The exact effect depends on the
> mechanism of diffusion, i.e. whether from uncorrected
> spherical aberration or straight diffusion from some object
> in front of the lens.
> When used on an enlarger, and enlarging from negatives,
> the effect on the print is the reverse: the lens is still
> diffusing the bright areas but these are now the shadows so
> the effect in the print is to spread out or blur the
> shadows. While this kind of diffusion has been used to good
> effect it is quite different from the effect on a camera or
> when making a reversal enlargement. I find it mostly leads
> to rather murky images where the effect on highlights leads
> to a glowing quality.
> Without seeing the photos I have no idea of what
> Grootclaes was doing but it should be fairly obvious.
> OTOH, if he was able to make sharp print later than the
> diffusion or whatever it was, had to be on the enlarger.
> There are a great many materials which can be used for
> diffusion, those with simple geometrical patterns, like
> cheesecloth or window screen, tend to have a directional
> diffraction pattern (typically star- or cross-shaped) where
> a soft focus lens does not.
>
> --
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk@xxxxxxxxxxxxx
>
>
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