Lens angle of view calculator

Hi there,

I have just got an EOS 300D after using an EOS 5 for years. I found it quite confusing thinking about lenses with the DSLR as I was used to 35mm. Anyway, to cut the story short, I created this to help me:

http://www.sweeting.or​g/mark/lenses/

I have built in loads of Canon lenses and digital bodies (as well as 35mm film) into the calculator, so you can view the angle of view of any lens, and see how this changes depending on sensor size.

Let me know how you find it and if you have any suggestions.

Cheers,

Mark

Mark, it looks like the calculator covers many Canon lenses, and that is good. Too bad it doesn't have a generic focal length capability for non-Canon lenses.

Now everybody will be asking you for a protractor, so they can figure out what they will get from an angle of view.

---Bob Gross---

Cheers Bob. I'd better stock up then

Mark, I love it. I have actually placed the calculator in my Quick Launch bar to figure this stuff out. With your tool I need only one bookmark.

Cheers,

Z

marksw wrote:
Cheers Bob. I'd better stock up then

Somebody ought to market a photographer's protractor. It would not be any different from an ordinary protractor, except for the name.

Then somebody else will market the digital photographer's protractor. It would not be any different from the one above, except that it says "digital" on it.

---Bob Gross---

Good stuff, Mark.

What about the 1.4X and 2X extenders for those of us who are trigonometrically challenged?

Thos.

Thanks for the idea, Tom. I'll see what I can add for the next release.

Cheers,

Mark

Hi,

I've updated the tool now. It includes a list of 'generic' catalogue of lenses and the following camera bodies:

Canon: EOS 1DS, EOS 1D, EOS 10D, EOS 300D
Fujifilm: FinePix S2 Pro
Kodak: DCS 14n
Nikon: 1DX, D2H, D100
Pentax: *ist D
Sigma: Sigma SD9, SD10

http://www.sweeting.or​g/mark/lenses/

Cheers,

Mark

Top work Mark. I love that.

Only one suggestion is to make the lense selection list a bit wider. Some of the Sigma lense names disappear off the side of the list.

Apart from that, top banana

Cheers

Ian

Hi Mark,

excellent idea, only one question, which angle are you measuring, is it horizontal, vertical or diagonal? After reading the page it isnt clear, I guess its diagonal but would like to know for sure. Having all three would really put the icing on the cake.

Best regards

BearSummer

BearSummer,

I don't know where you are looking but when I look at it there *is* a drop down list for the angle, i.e. horizontal, vertical etc.

Cheers

Ian

That's right, thanks Ian. You can select the angle you want: vertical, horizontal or diagonal. The horizontal (in landscape) is the default delected reading direction.

Cheers,

Mark

I found it quite useful. It seems relatively easy to add the various medium formats:

6x4.5: 56x41mm
6x6: 56x56mm
6x7: 56x65mm
6x9 (graflex): 56x76mm
6x9 (others): 56x83mm

You get the idea. The large-format people are probably too few to be worth the trouble. But I frequently adapt my medium-format lenses to my Canon 10D, and adding these would be handy for comparing them to their native application.

Rick "who appreciates a good idea well-executed" Denney

Great calculator, Mark. I'll add it to my favorites!

Rick,

You say "I frequently adapt my medium-format lenses to my Canon 10D, and adding these would be handy for comparing them to their native application."

Do you mean me adding medium format fims (645, 6x6, 6x7) to the sensor choice, or do you mean something else?

I can add the film formats to the sensor list under the 'generic' catalogue easily enough, but is this what you mean?

I have the following dimensions for medium format film:

645 = 56 x 41.5mm
6x6 = 56 x 56mm
6x7 = 56 x 69.5mm

Can someone verify this please as my 6x7 size is not the same as Rick's....

Cheers,

Mark