01-17-2014, 01:27 PM
Just shoot at infinity and everything will be sharp....
New Lenses from Olympus Coming
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01-17-2014, 01:27 PM
Just shoot at infinity and everything will be sharp....
01-17-2014, 06:37 PM
Reason for asking about hyperfocal distance is that, I understand the old body cap lens has a simple focus distance selector. I was wondering if the fisheye at f/8 would have enough depth of field not to need one. Given the MFD of 20cm, it seems it would still need a focus adjust. Thinking more, if they say MFD of 20cm, that implies it can focus at 20cm. You're not going to get to infinity from there...
Looking again at the image linked in the 1st post, there does seem to be a cut away section on the front of the lens where such a focus selector could be.
<a class="bbc_url" href="http://snowporing.deviantart.com/">dA</a> Canon 7D2, 7D, 5D2, 600D, 450D, 300D IR modified, 1D, EF-S 10-18, 15-85, EF 35/2, 85/1.8, 135/2, 70-300L, 100-400L, MP-E65, Zeiss 2/50, Sigma 150 macro, 120-300/2.8, Samyang 8mm fisheye, Olympus E-P1, Panasonic 20/1.7, Sony HX9V, Fuji X100.
01-29-2014, 06:30 AM
Quote:Reason for asking about hyperfocal distance is that, I understand the old body cap lens has a simple focus distance selector. I was wondering if the fisheye at f/8 would have enough depth of field not to need one. Given the MFD of 20cm, it seems it would still need a focus adjust. Thinking more, if they say MFD of 20cm, that implies it can focus at 20cm. You're not going to get to infinity from there... There is indeed a focus selector on the lens: "The multi-use lens barrier MF lever switches from pan focus shooting to close up 8-inch shooting with a single press of the lever". Parameters of the lens: Principal specifications Lens type Prime lens Max Format size FourThirds Focal length 9 mm Lens mount Micro Four Thirds Aperture Maximum aperture F8.0 Minimum aperture F8.0 Aperture notes Fixed F8 aperture Optics Elements 5 Groups 4 Special elements / coatings 2 aspherical elements Focus Minimum focus 0.20 m (7.87″) Maximum magnification 0.046× Autofocus No Full time manual Unknown Focus method Internal Physical Weight 30 g (0.07 lb) Diameter 56 mm (2.2″) Length 13 mm (0.51″) Materials Plastic Hood supplied No From http://www.dpreview.com/news/2014/01/29/...le_0_2#9mm |
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