### Hyperfocal distances for Minox 35 GT

greenspun.com : LUSENET : MINOX FAQ : One Thread

Martin, in your Minox Photography site, you gave a hyperfocal distance chart for various aperture settings on the GTE/GTX/GTS/35ML (in http://greenspun.com/bboard/q-and-a-fetch-msg.tcl?msg_id=000MxU). Does this chart apply to the GT as well? If not, do you have one for the GT? Thanks for your advice in advance.

-- Hoyin Lee (leehoyin@hutchcity.com), June 01, 2001

Hoyin,

Yes, the chart applies equally to GT

martin

-- martin tai (martin.tai@capcanada.com), June 02, 2001.

Thank you so much, Martin. One more question: what's the minimum DOF range at each hyperfocal setting?

-- Hoyin Lee (leehoyin@hutchcity.com), June 03, 2001.

Hoyin There are two ways to use the hyperfocal distance H

A: Set the focal dial on Minox camera to INFINITY

Then the range of DOF is from H to infinity

For example, with F2.8 H =15, when lens set at infinity everything from 15 meter to infinity will be sharp

With F8, H= 4.6, when lens focused at infinty, objects from 4.6m to infinity will be sharp

B: Focus the lens at Hyperfocal distance H, then object from half of H to H will be sharp.

Example at F2.8 if lens is focused at H= 15 m, then object from 7.5m to 15 m will be sharp

At F8, if focus at 4.6 m then the DOF is from 2.3m to 4.6 m

-- martin tai (martin.tai@capcanada.com), June 06, 2001.

Correction:

B: Focus the lens at Hyperfocal distance H, then object from half of H to INFINITY will be sharp. Example at F2.8 if lens is focused at H= 15 m, then object from 7.5m to infinity will be sharp At F8, if focus at 4.6 m (hyperfocal) then the DOF is from 2.3m to infinity

-- martin tai (martin.tai@capcanada.com), June 06, 2001.