[rollei_list] Re: Tripod versus Handheld
- From: John Wild <JWild@xxxxxxxxxxxxxxxxxxxxxx>
- To: "rollei_list@xxxxxxxxxxxxx" <rollei_list@xxxxxxxxxxxxx>
- Date: Fri, 19 Aug 2011 09:18:43 +0100
Not really of high quality to start with, but I experimented with my Rollei
110 camera - using 110 cartridges. The initial sharpness was poor,
especially noticeable with such a small negative. My feeling was that the
Tessar lens should have been sharp.
I measured the distance of cartridge location to the film gate in the camera
and compared that to the depth that the film was seated in the cartridge.
There was a lot of 'play'. I found a thin piece of acetate, cut it to shape
and inserted it between the paper backing and the cartridge back thereby
pushing the emulsion in contact with the film gate - the negative sharpness
improved to a very acceptable level. I was surprised that such a small frame
could produce 10x8 enlargements - apart from the grain.
This is obviously a problem with 110 (or probably 126 also) cartridge
manufacturing tolerances when matched to camera manufacturers' tolerances.
I had a Pentax 110 which did produce sharp images and also a Kodak 110
'plastic camera', which also produced acceptable prints; but a 'family' Disk
camera was REALLY C**P!
John
On 18/08/2011 22:57, "Richard Knoppow" <dickburk@xxxxxxxxxxxxx> wrote:
> ....... The support thicknes is
> controlled very accurately, at least by Kodak. There is an
> ISO standard on the thickness. However, some films came on
> thinner support, I think Technical Pan did. Some recommended
> putting thin black paper under the film to adjust for the
> difference. Most sheet film is 0.007 inches in thickness,
> the emulsion thickness doesn't really matter and is much
> thinner......
>
> --
> Richard Knoppow
> Los Angeles
> WB6KBL
> dickburk@xxxxxxxxxxxxx
>
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