What works for my eyes has changed over time. At first I preferred a
plain ground glass. I found microprisms completely useless, the image
never changed with focus for me, similarly the split image was of little
use, so these focusing aids just got in the way. In more recent times I
have found it difficult to judge focus. I do a test where I focus 10
times on a bookcase about 5m from me (in room lighting). I alternate
starting from infinity and 1m, and mark the focus point on a piece of
tape over the focus scale. I then use the DOF scale to judge how wide
the spread is. About a month ago my 2.8D spread was up to f/8 on the DOF
scale. Not acceptable for many shooting situations. I found that now
microprisms work very well. The focus point is very obvious. I don't
know what changed in my eyes to make them work. The split image however
is not as good. It works but the spread of focus is greater than using
the microprisms. I recently installed an after market screen in my 2.8D
(microprism centre region) and the focus spread now fits in the f/2.8
DOF marks. So now I am looking at my other cameras hence the questions
on the 6003.
Richard Urmonas
On 11/10/20 5:00 AM, CarlosMFreaza wrote:
I have the SL66 camera and I'm always watching and reading about the 6000 system focusing screens because they are compatible.. My camera has the original standard Rollei focusing screen with Fresnel lens( "microstructure") and, grid and horizontal split image, it does not have a microprism collar yet, it was added from 1976 for this same standard "universal" focusing screen. I find very useful the split image focusing aid, it's identical to those used for the TLR with interchangeable focusing screen from 1958 but the siz is different except for the GX/FX with 6000/SL66 compatible focusing screens. The High D screen and other "superbright" focusing screen don't attract me, I prefer a ground glass to focus without focusing ait and, in fact, I bought an original Rollei ground glass screen for the SL66, I us it sometimes; it does not have grid, guide lines or centralcircle, it's a pure ground glass.-
Carlos
El mar., 10 nov. 2020 a las 9:10, Richard Urmonas (<richard@xxxxxxxxxxx <mailto:richard@xxxxxxxxxxx>>) escribió:
Thank you Carlos,
Your detailed knowledge is always amazing. I think it may be the
last screen you mention. I just looked at it again using your
details, and noted it does not have the Fresnel pattern.
For general use I may swap screens with my SLX as the standard
screen should be more useful in most situations.
Thank you once again,
Richard Urmonas
On 11/10/20 3:10 AM, CarlosMFreaza wrote:
Hello Richard;
According to the Rollei Report V, the 6000
system, SL66 system and 2,8GX/FX TLR cameras have interchangeable
focusing screens, they can use the same focusing screens. This
book describes as "Universal Focusing screen" for these cameras
this one (Prchnow Register PR 1014/2) " Universal focusing
screen, measuring wedge for maximum setting accuracy for vertical
lines, micro-grid with setting criterion, flicker-free image,,
focusing screen with microstructure for assessing sharpness over
the entire image field" , it was manufactured from 1976.
The camera description for the 6003 SRC 1000 says:
"Interchangeable bright focusing screen" and the large focusing
screen models list for the 6000 system and cameras mentioned
previously shows a focusing screen called " Bright focusing
screen (Hell Einstellscheibe)", the description says. ",Focusing
screen with microstructure, sharpness graduation of the entire
image field, undisturbed motif design, also for lenses with a
very low effective aperture. Orientation aids for 4.5x6 vertical
and horizontal shots" This focusing screen does not have a
microprism collar and _it does not have a split image in the
central circle_. However in the Rollei focusing screens list
there is a similar focusing screen with a _horizontal split image
in a smaller circle within the central circle_ as you describe
for your camera focusing screen. Your focusing screen is included
in the Rollei focusing screen list, however it does not mean it
is an original Rollei focusing screen because some Chinese copies
look similar, but it could be an original Rollei focusing screen too.
Carlos
,
El mar., 10 nov. 2020 a las 0:52, Richard Urmonas
(<richard@xxxxxxxxxxx <mailto:richard@xxxxxxxxxxx>>) escribió:
Perhaps someone can tell me what is the standard screen on
the 6003 SRC 1000. I was looking at the instructions for the
6003 Pro and noticed that it shows a horizontal split image
with a micro prism collar, while my camera has a small
horizontal split image (no micro prism collar). This is not
even listed as an alternative screen in the instructions. Is
this the normal screen (the instructions are for the pro
while I have a SRC1000) or has someone fitted some sort of
after market screen?
Thank you,
Richard Urmonas
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