front-element helicoid type focus
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8x40 PCF WP II - PCF WP II - BINOCULARS - Products - PENTAX U.K ...
Full sized waterproof porro prism binocular with larger front element ... Eyepiece ring Helicoid type Nitrogen filled * PENTAX PCF WPII models ... Focus range: 3.5 m (shortest) Weather protection: Waterproof 1m ...
http://www.pentax.co.uk/_uk/binoculars/products/index.php?gruppe=135&artikel_nr=65807
20x60 PCF WP II - PCF WP II - BINOCULARS - Products - PENTAX U.K ...
Full sized waterproof porro prism binocular with larger front element ... Eyepiece ring Helicoid type * PENTAX PCF WPII models are not designed ... Focus range: 8 m (shortest) Weather protection: Waterproof 1m ...
http://www.pentax.co.uk/_uk/binoculars/products/index.php?gruppe=135&artikel_nr=65810
Kodak Retina II IIa IIc
Kodak Retina II (type 014) Although the Retina II model ... The lens is helicoid-mounted, and you focus by moving a little thumb tab. ... sometimes develop tiny "stars" in the front element coating.
http://www.dantestella.com/technical/retina.html
Telephoto Zoom Lenses Nikon Tokina Sigma Canon
... lenses are our 2nd most popular lens type ... Focus Adjustment : Front-focusing method with helicoid ring drive ... DX an APO lens. The front element ...
http://www.dvshop.ca/digcamera/telezoom.html
Camera Parts
IC2 TYPE 1 ... HELICOID/FOCUS ... LENS/FRONT ELEMENT
http://www.crystalcamera.com/cam_parts.htm
New article: Soft-Focus Lenses and Techniques - Large Format ...
New article: Soft-Focus Lenses and Techniques Feedback ... The Imagon uses discs that are placed in front of the front element. ... Softar seems to be the most highly regarded device of this type ...
http://www.largeformatphotography.info/forum/showthread.php?t=8749
Zuiko Auto-Macro 50mm f/3.5 - Olympus OM Macro Lenses
The lens can focus from infinity to ½ life size ... 50mm lens requires a longer focusing helicoid, and in order to accommodate this the front element is ... Usually in lenses of this type the lens barrel ...
http://www.alanwood.net/photography/olympus/macro-lens-50-35.html
Zuiko Circular Fisheye lens 8mm f/2.8
The front element of a fisheye lens has an extreme amount of ... lenses where there was no focusing mechanism (Fixed focus type ... Diaphragm operation : Automatic Focusing : Straight Helicoid
http://www.mir.com.my/rb/photography/hardwares/classics/olympusom1n2/shared/zuiko/htmls/fish8mm.htm
Special Lenses For Nikon 'F' Mount
... ends their focusing range at 1:1 or 1:2 and can focus to ... shown a 1.5 kg hunk of glass with a humongous front element to ... by virtue of its unbelievably long double helicoid.
http://www.naturfotograf.com/lens_spec.html
EOS Documentation Project- TS-E 24mm f/3.5 L Lens manual
The tilt allows control of the plane of focus to maximize or ... to ±90° Fully automatic lens aperture control; Aspherical front element ... Focusing Method: Floating elements ; double helicoid Diaphragm ...
http://www.eosdoc.com/manuals/lens/TS-E24f35L
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