Tagged with focal - Personal View Talks

Metabones lens speed booster adapter, focal reducer

Vitaliy_Kiselev — Sun, 13 Jan 2013 22:26:32 +0000

This is 0.71x metabones focal reducer located in the lens adapter.

Specifications

Magnification: 0.71x
Maximum input aperture: f/1.26
Maximum output aperture: f/0.90
Lens elements/groups: 4/4
Objective lens mounts: Canon-EF, Nikon-F (Leica-R, Contax C/Y, Contarex and Alpa planned)
Capabilities, Canon-EF version: Electronic iris control, AF and VR
Capabilities, Nikon-F version: Manual iris control of G type lenses
Camera mounts: Sony NEX, Micro Four Thirds, (Fuifilm X planned)
Length reduction (Sony NEX, version): 4.16mm
Length reduction (Micro Four Thirds version): 6.17mm
Dimensions Sony NEX version (diameter x length): 69mm x 27mm (with tripod mount removed)
Weight Sony NEX version: 194 grams
Tripod mount: Removable type with Arca Swiss compatibility
In reality it is EOS to E mount adapter with glass
Price for Canon version is about $600
Price for Ninon G to m43 is about $400

See more at

Philip Bloom made big mostly like marketing text (and it is, as it is present) full of inline advertisment (almost as text volume), as this thing will have issues anyway. So, wait and do not jump.

You can check early topic on reducers

http://www.personal-view.com/talks/discussion/577/using-focal-reducers-with-gh12-and-old-lenses/p1

Effect of Lens Focal Length on Portraits

stoney — Thu, 09 Feb 2012 00:35:22 +0000

Those links have examples showing effect of lens focal length on portraits from wide to tele angles.

http://www.lesjones.com/2011/06/15/effect-of-lens-focal-length-on-portraits/

http://annawu.com/blog/2011/09/focal-length-comparison/

http://www.mcpactions.com/blog/2010/07/21/the-ideal-focal-length-for-portraiture-a-photographers-experiment/

Viltrox Focal Reducer

IronFilm — Tue, 14 Aug 2018 08:50:08 +0000

How is it, anybody using it?

Camdiox Focal Reducer with Aperture (NEX-EF)

fatpig — Tue, 18 Apr 2017 07:41:51 +0000

Does anyone have any experience with this focal reducer? http://www.ebay.de/itm/Focal-Reducer-Speed-Booster-Adapter-Canon-EOS-EF-Objektiv-fur-Sony-NEX-aperture-/172310309175?hash=item281e7ea937:g:UmEAAOSwMmBVwImK

I used to buy the focal reducers offered on PV, they have good optics. However, I love the fact this one has aperture blades. Any experience with this one?

Focal Lengths and Lenses used by Great Directors

Manu4Vendetta — Wed, 14 Sep 2016 11:56:49 +0000

Second Lens adapter on a speedbooster / focal reducer mount?

VortekShow — Wed, 07 Sep 2016 16:02:36 +0000

Hey, quick question. Focal reducers convert a camera mount to modern mount, however I use only vintage lenses and I had the question wether you could adapt from the focal reducer mount to different lens mounts by adding an additional adapter. I don't think this would work but maybe somebody can explain it to me.

EOS to MFT No Name Lens Turbo Analog

CRFilms — Wed, 08 Jan 2014 07:25:29 +0000

Looks like these just came out within the last few days. Dumb Canon EF speed booster $99 and $139:

http://www.ebay.com/itm/Focal-Reducer-Speed-Booster-adapter-Canon-EF-mount-Lens-to-Micro-4-3-M4-3-Camera-/201016438691?pt=US_Lens_Adapters_Mounts_Tubes&hash=item2ecd836fa3

Try your luck gents.

EDIT: I swear I did a search and didn't find the RJ topic. Here's the link to that: http://www.personal-view.com/talks/discussion/9086/rj-lens-turbo-m43-adapters/p1

Video focal lengths

stoney — Tue, 01 Nov 2011 13:53:09 +0000

My interests are candid moments and events. I tried Nikkor 50mm handheld. Not a good idea on GH2. Too much shakes. 1/60 shutter speed is my default for 1080p24. Divide by two. 30mm seems the longest focal length that works for handheld without OIS. Luckily there are fast lenses under 30mm. Noktor 12mm 1.6 and Nokton 25mm 0.95 are looking great.

I'd use a tripod or a shoulder rig to go longer focal length without OIS unless jacking up the shutter speed.

OIS isn't a magic though. With handheld, I think OIS is effective up to 50mm for m43 zooms at 1/60 SS. 14-42, 14-45, 14-42X, 14-50 (43 lens) are all good. Longer than that would require a tripod or a shoulder rig. Suppose software image stabilization doubles the useable focal lengths. Then 100mm seems the maximum focal length for handheld. Panasonic 12-35X and 35-100X at f2.8 or faster would be great, but $$$$. I’d prefer 14-100X f4 around $1K.

Focal length & Stabilization

stoney — Tue, 18 Oct 2011 04:00:09 +0000

In photo there seems a simple rule for minimum shutter speed (SS). Just an inverse of focal length. e.g. 1/50 SS for 50mm lens.

For 2x crop sensor, I guess a recommended minimum SS would be twice faster. e.g. 1/100 SS for 50mm. Or roughly 1.85 times faster for 16:8 ratio.

If we use 1/60 SS for video, focal length longer than 35mm would need more stabilization... I guess. Or am I utterly wrong about this?