Does anyone knows how to utilise this scale? I read somewhere in the forum about its use to estimate the hyperfocal length but can't seem to find it anymore. Thought it will be useful to know. Thanks...
This scale tells you the depth of field.
Base on the picture, if you focus at 0.6m and use an aperture of F22, anything from 0.4m to infinity will be sharp.
This scale tells you the depth of field.
Base on the picture, if you focus at 0.6m and use an aperture of F22, anything from 0.4m to infinity will be sharp.
Thanks for the quick reply.
Need to clarify tho. 0.6m is taken from the white vertical line? F22 is from the L-shaped line with infinity symbol? But where does the 0.4m come from? :think:
Thanks for the quick reply.
Need to clarify tho. 0.6m is taken from the white vertical line? F22 is from the L-shaped line with infinity symbol? But where does the 0.4m come from? :think:
Oops made a mistake while typing the link. Corrected.
You're welcome.
Btw, here is how I would normally use the scale:
1. Choose an aperture, e.g. f/16.
2. Set manual focus mode, and turn the focusing ring so that the infinity mark aligns with the choosen aperture, f/16 in this case.
3. The center mark indicates where the focus is at, but this is for info only and you don't need to care about it.
4. The distance marking falling on f/16 at the other end is where the nearest point of which it will be in focus. Check that this is what you desire. If not, choose another aperture. and repeat from step 1.
5. Compose and shoot.
Using your lens as an example: focus and set the infinity mark to f/16, the hyperfocusing range would be ~0.5m-infinity, and the focusing point is ~1m.
Some lenses do not have any DOF scale on them. For those lenses you would need to use the hyperfocusing charts/wheel available on the DOFMaster website.
So from the picture, for F16 anything between ~0.45 to 5m will be sharp? Correct me if i am wrong.
BTW what does the R mean in the picture?
BTW what does the R mean in the picture?
So from the picture, for F16 anything between ~0.45 to 5m will be sharp? Correct me if i am wrong.
Its the Infrared focus point I believe..
wow... which lens is that? I've not seen that on the EF lenses I've been working on lol,
guess we entry grade DSLR users have it easy =)