Dof term

[Pete Allen]

Hi guys,
I have noticed on a few threads, when refering to dof, a figure has been included i.e. 5+, what does this refer to and, how is that used when setting your camera.
Thanks
Pete

 

[foodpoison]

I'm intrigued as to the answer to this, too.

 

[Pete Allen]

I thought it was me being dumb

 

[pampers]

I thought it was me being dumb

You are correct in your thinking sir.

 

[Rob_W]

Is it about Hyperfocal Distance ?

The hyperfocal distance is used to determine where to focus to maximize depth-of-field.

The hyperfocal distance is the focus point where everything from half that distance to infinity is in the depth-of-field zone.

You can determine the hyperfocal distance by using a calculator, such as DOFMaster Online Depth of Field Calculator.

If you focus at the hyperfocal distance, everything will be acceptably sharp from half the hyperfocal distance to infinity.

For example, for a 18mm lens at f/5.6, the hyperfocal distance is 9.45 feet.

If you focus at the above hyperfocal distance, 9.45 feet, everything will be in focus from half the hyperfocal distance, 4.7 feet, to infinity.

 

[Uneducated_Rick]

Hi guys,
I have noticed on a few threads, when refering to dof, a figure has been included i.e. 5+, what does this refer to and, how is that used when setting your camera.
Thanks
Pete

Can you point out a couple of these threads as I can't remember seeing one

 

[Pete Allen]

One here post no4

 

[Terrywoodenpic]

does not mean any thing to me, but I have only been at it for 64 years.

 

[Uneducated_Rick]

Can only assume the poster meant he was shooting at f/5 or above to get sufficient DoF

 

[will69]

I think he is saying that he is "5+", like my son is 5+3/4.

 

[Canon Bob]

Can only assume the poster meant he was shooting at f/5 or above to get sufficient DoF

EXIF does show that f/5.6 was used for those shots.

Bob

 

[Pete Allen]

EXIF does show that f/5.6 was used for those shots.

Now that leads to another question, how can you get that information from an image posted on the forum?

 

[Martyn...]

Now that leads to another question, how can you get that information from an image posted on the forum?

Drag the image off the post to an exif viewer program, or drag the image to your desktop and right click, depending on your operating system and what programs you have.

 

[Pete Allen]

WOW, didn't work on my desktop but, all the info is there in ps, thanks Martyn

 

[Martyn...]

WOW, didn't work on my desktop but, all the info is there in ps, thanks Martyn

If your on Windows, download opanda exif viewer (its free), Mac download exif viewer (its also free).

It will even tell you how many times your shutter has fired if you run one of your latest jpegs through it.

 

[Pete Allen]

Clever stuff, off to download it now, thanks again.

 

[ppp]

Unless it the micro adjustment in camera for a lens at that DOF (Depth of Field) doesn't sound right though

 

[ppp]

having read the post 4 mentioned above I think the guy means the F stop of 5.6

 

[Canon Bob]

Unless it the micro adjustment in camera for a lens at that DOF (Depth of Field) doesn't sound right though

There's more than likely some tubes behind the lens.

Bob

 

[ekso]

EXIF does show that f/5.6 was used for those shots.

Bob

your right. Exif does show that. that's waht he meant by 5+
:bonk:

 

[Pete Allen]

Thanks guys, I thought it was something I was missing re DOF