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#1 |
Regular Crew
Join Date: Nov 2007
Location: Finland
Posts: 107
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generic close-up lens/filter
While waiting my EX.. one more question..
Will generic close-up lens/filter work with EX1? In other words can I focus closer with one? And btw what is the minimum focusing distance for EX1 as it is? Haven't been able to find that by googling. |
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#2 |
Regular Crew
Join Date: Nov 2007
Location: Finland
Posts: 107
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and this one is also still mystery to me
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#3 |
Trustee
Join Date: Nov 2007
Location: Bristol UK
Posts: 1,273
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Close up lense
The EX1 has a macro facility.
How close can it focus ? I went on a demo and saw the demo guy switch the macro function on and he held a memory card almost touching the lense hood,i'm talking 20mm from the lense hood and the cam focused on it,i was watching on a monitor and i could clearly see the writing on the card and the metallic fleck on the paint on the sxs card. Is this close enough ? |
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#4 |
Major Player
Join Date: Feb 2006
Location: Louisville, KY
Posts: 591
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yes the cam does focus very close....
although a close-up filter will allow you to have the camera a little farther away.... and or allow the camera to focus closer while zoomed in more. I recommend a quality close-up lens that is multi-coated to help minimize internal reflections. Be aware that most will cause CA at the edges. |
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#5 | |
Sponsor: Schneider Optics
Join Date: Aug 2007
Location: Van Nuys, CA
Posts: 387
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Quote:
Schneider Optics manufactures an 86mm Achromatic Diopter which enables significantly closer focus than your camera is capable of. These diopters are unlike other diopters because they feature two elements instead of one so that your image will be free of soft edges and chromatic abberations. You simply use a step ring to go from 86mm to 77mm. To calculate the minimum focus distance of a diopter at infinity; divide the power of the diopter by 40. Better yet, send me an email and I will send you an Excel chart that calculates focus distance based on your cameras minumum focus distance. Diopters linked below. http://www.schneideroptics.com/Ecomm...D=1088&IID=903 http://www.schneideroptics.com/Ecomm...D=1088&IID=904 http://www.schneideroptics.com/ecomm...=1084&IID=1025 Ryan Avery Schneider Optics |
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#6 |
Inner Circle
Join Date: Dec 2005
Location: Bracknell, Berkshire, UK
Posts: 4,957
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Achromats by definition are not free from chromatic aberations as they are only corrected for 2 wavelengths of light, Doublet lenses are certainly an improvement over simple single element lenses but most achomatic lenses show significant purple or violet fringes. Only Apochromatic lenses which are normally triplet lenses using exotic ED glass are truly free from chromatic aberation.
__________________
Alister Chapman, Film-Maker/Stormchaser http://www.xdcam-user.com/alisters-blog/ My XDCAM site and blog. http://www.hurricane-rig.com |
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#7 |
Major Player
Join Date: Nov 2007
Location: Finland
Posts: 317
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Raynox CM-3500 macro
http://www.adorama.com/IRXCM3500.html Does anyone know if this would work with the EX1? ---EDIT Ah, no its way too small I see now. ---EDIT Sami |
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#8 | |
Sponsor: Schneider Optics
Join Date: Aug 2007
Location: Van Nuys, CA
Posts: 387
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Quote:
Ryan Avery Schneider Optics |
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