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Archive 2013 · cropmarks on reflex mirror?
  
 
khwaja
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p.1 #1 · p.1 #1 · cropmarks on reflex mirror?


has anybody added their own cropmarkss or composition guides to their reflex mirrors?
i'm thinking of ohp markers, though difficult to remove, creates a very thin line...



May 07, 2013 at 02:31 PM
binary visions
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p.1 #2 · p.1 #2 · cropmarks on reflex mirror?


Wouldn't this be better to do it on the focus screen itself, which is replaceable and can be removed from the camera to work on?


May 07, 2013 at 02:38 PM
khwaja
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p.1 #3 · p.1 #3 · cropmarks on reflex mirror?


i tried that, unable to figure it out...
now i have dirt on the focusing screen. i wonder if i should stop



May 07, 2013 at 03:03 PM
jhinkey
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p.1 #4 · p.1 #4 · cropmarks on reflex mirror?


I don't think you'll be able to see crop marks on your mirror because it's not in the plane of focus. You can't see the dust on your mirror nor the partially silvered spots for the AF module to see through.

A focusing screen replacement with custom marks on it (not sure how to do it) is the only way to go.



May 07, 2013 at 03:33 PM
 

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mikerfns
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p.1 #5 · p.1 #5 · cropmarks on reflex mirror?


khwaja wrote:
i wonder if i should stop


Yes. That would be wise. :-)

Any "crop marks" MUST be on the upper (flat) matte surface of the focusing screen. Any marks (dirt, dust, scratches) on the reflex mirror are never in focus in a DSLR viewfinder system.


Edited on May 07, 2013 at 04:26 PM · View previous versions



May 07, 2013 at 04:07 PM
pburke
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p.1 #6 · p.1 #6 · cropmarks on reflex mirror?


nothing you can't fix with some duct tape

since my d7000 there have been crop marks/composition grid features built into the camera - no need for a grid screen like I had in the F3HP any longer.

Third party replacement focus screens are available for many cameras (up to about d700/D7000 vintage), usually split image for MF glass, but also with grid lines (e.g. Katzeye)



May 07, 2013 at 04:16 PM
mikerfns
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p.1 #7 · p.1 #7 · cropmarks on reflex mirror?


khwaja wrote:
i'm thinking of ohp markers, though difficult to remove, creates a very thin line...


Not as "very thin" as you might think. This is how "fine" a 0.6mm OHP marker line will appear in the viewfinder when drawn on a 24x36mm (FX/35mm) focusing screen ...







On a DX format focusing screen they will appear 1.5X thicker than above.

There's a reason permanent grid marks on 35mm SLR focusing screens were "etched", probably only about 0.1~0.2mm wide.



May 07, 2013 at 04:21 PM





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