F stop & depth of field: Are they related and is there a guide to show F stop neede to include front and behind the point of focus?

michel khushf

Are they related and is there a guide to show F stop neede to include front and behind the point of focus?

rpavich Loc: West Virginia

michel khushf wrote:

Are they related and is there a guide to show F stop neede to include front and behind the point of focus?

depth of field calculator online.

TNmike Loc: NW TN

Here is a link to an online one like rpavich suggested.

http://www.dofmaster.com/dofjs.html

Mac Loc: Pittsburgh, Philadelphia now Hernando Co. Fl.

michel khushf wrote:

Are they related and is there a guide to show F stop neede to include front and behind the point of focus?

A depth of field calculator is handy to have.
I recommend the book "Understanding Exposure" by Brian Peterson. He does a wonderful job of explaining the relationship between Aperture, Shutter Speed, and ISO and how they all work together for you to get the exposure you want.

charles brown Loc: Tennesse

Great app for smart phone called simpleDOF - will tell you everything you need to know. But to fully understand DOF and F stops read the books suggested.

shutterbug64 Loc: Colorado

You can bet the farm that they are related. The larger the opening of the lens (f/2.8) the less depth of field and the smaller the opening (f/16) the more depth of field. The closer you are to the subject, the less depth and the farther away the more depth. The wider angle lenses the more depth of field. Telephoto lens, the less depth of field. As said before, read and shoot, practice, practice, practice, learn, learn, learn. Nothing like the school of hard knox.

BboH Loc: s of 2/21, Ellicott City, MD

Take a look at Expoaperture2
http://www.expoimaging.com/product-detail.php?cat_id=4&product_id=4&keywords=ExpoAperture2_Depth-of-Field_Guide.
Mechanical - not electronic, fit in your bag unobtrusively

jerzee.shore.shooter

Either knox or knocks, it's where most good photographers call their alma mater.

emmons267 Loc: Arizona, Valley of the Sun

BboH wrote:

Take a look at Expoaperture2
http://www.expoimaging.com/product-detail.php?cat_id=4&product_id=4&keywords=ExpoAperture2_Depth-of-Field_Guide.
Mechanical - not electronic, fit in your bag unobtrusively

Works great and No Batteries Required...

Bill gomberg

shutterbug64 wrote:

You can bet the farm that they are related. The larger the opening of the lens (f/2.8) the less depth of field and the smaller the opening (f/16) the more depth of field. The closer you are to the subject, the less depth and the farther away the more depth. The wider angle lenses the more depth of field. Telephoto lens, the less depth of field. As said before, read and shoot, practice, practice, practice, learn, learn, learn. Nothing like the school of hard knox.

Correct but as relates to focal length having to do with depth of field .It doesn't and you can prove it .Aperture of lens plus subject to film/sensor distance are the only controlling factors .
I am now braced for e's declaring I'm a know nothing nut .

Ing f

shutterbug64 Loc: Colorado

jerzee.shore.shooter wrote:

Either knox or knocks, it's where most good photographers call their alma mater.

Yup no matter how you say it I have been going there for 45 years and still at it as my main living.

kwils Loc: Salem, Ma

There is depth of field calculator app for Android
https://play.google.com/store/apps/details?id=com.aimenrg.dof&hl=en
And for iphone or ipad.
https://itunes.apple.com/us/app/depth-of-field-calculator/id356339910?mt=8

emmons267 Loc: Arizona, Valley of the Sun

Bill gomberg wrote:

quote=shutterbug64 You can bet the farm that they... (show quote)

Actually, when you change the focal length, the Apparent DOF is changing, not the actual DOF. When you change the focal length, the DOF appears to change, but in reality, and under close inspection, it isn't - it's an optical illusion.

Bill gomberg

mfeveland wrote:

quote=Bill gomberg quote=shutterbug64 You can be... (show quote)

Agreed . Now we I expect a deluge of letters disagreeing with us .

emmons267 Loc: Arizona, Valley of the Sun

Bill gomberg wrote:

quote=mfeveland quote=Bill gomberg quote=shutte... (show quote)

LOL... I know what you mean. I'm sure there will be someone who disagrees.