I made a quick "equivalence" chart (full stops)

[Supisiche]

The chart assumes that you stand at the same distance to the subject with 3 different cameras (full frame, aps-c *1.5*, and micro four thirds *2*) and that you use equivalent focal lenghts to achieve the same angle of view (75mm ff > 50mm apsc > 25mm m43).

The chart tells you the needed f-number to keep the same aperture diameter (viewed from the front of the lens) for all formats. I used a calculator, so "3.73" could be f/3.5 or f/4 (a bit more/less light). Enjoy

 

[Dem Bell]

I told my 6-year-old that someone posted x2 table on a photo forum. He looked at the numbers and said: "Good luck getting an f/0.6 lens for the M43"...

 

[Donald B]

I told my 6-year-old that someone posted x2 table on a photo forum. He looked at the numbers and said: "Good luck getting an f/0.6 lens for the M43"...

heres 1mm dof with m43 ;-)









--
Olympus EM1mk2, Sony A7r2

http://www.dpreview.com/galleries/9412035244

past toys. k100d, k10d,k7,fz5,fz150,500uz,canon G9, Olympus xz1 em5mk1 em5mk2

 

[Supisiche]

I told my 6-year-old that someone posted x2 table on a photo forum. He looked at the numbers and said: "Good luck getting an f/0.6 lens for the M43"...

heres 1mm dof with m43 ;-)

Nice photo

 

[Mitrajoon]

Love it. Now please add 6x6, 4x5 & 8x10

 

[Highergr0und]

Whenever I'm out shooting with my friends and we have 3 types of sensors we can use this so we can be the same.

Seriously why is this important if you're shooting pics with your own camera?

 

[Supisiche]

Love it. Now please add 6x6, 4x5 & 8x10

(ง •̀_•́)ง

 

[Supisiche]

Whenever I'm out shooting with my friends and we have 3 types of sensors we can use this so we can be the same.

Seriously why is this important if you're shooting pics with your own camera?

What if you use a camera from your friends? (ﾉ◕ヮ◕)ﾉ

 

[BrentSchumer]

Whenever I'm out shooting with my friends and we have 3 types of sensors we can use this so we can be the same.

Seriously why is this important if you're shooting pics with your own camera?

What if you use a camera from your friends? (ﾉ◕ヮ◕)ﾉ

A+ for positivity and gumption.

 

[TN Args]

Seriously why is this important if you're shooting pics with your own camera?

Seriously, some people have been known to own cameras with different sensor sizes.

 

[TN Args]

The chart assumes that you stand at the same distance to the subject with 3 different cameras (full frame, aps-c *1.5*, and micro four thirds *2*) and that you use equivalent focal lenghts to achieve the same angle of view (75mm ff > 50mm apsc > 25mm m43).

37.5mm m43, in the case you cite

The chart tells you the needed f-number to keep the same aperture diameter (viewed from the front of the lens) for all formats. I used a calculator, so "3.73" could be f/3.5 or f/4 (a bit more/less light). Enjoy

Might be handy for some people. How have you been using it?

cheers

 

[Supisiche]

Seriously why is this important if you're shooting pics with your own camera?

Seriously, some people have been known to own cameras with different sensor sizes.

I have a m43 (not mine), an old canon powershot and I sold my D3300 this week. I have little money, only enough to get a D700 or a 5D mark ii, which one is better? I heard the D700 doesnt have video and the D600 I got months ago was in pretty bad shape. Can you help me? Thanks

 

[Supisiche]

The chart assumes that you stand at the same distance to the subject with 3 different cameras (full frame, aps-c *1.5*, and micro four thirds *2*) and that you use equivalent focal lenghts to achieve the same angle of view (75mm ff > 50mm apsc > 25mm m43).

37.5mm m43, in the case you cite

The chart tells you the needed f-number to keep the same aperture diameter (viewed from the front of the lens) for all formats. I used a calculator, so "3.73" could be f/3.5 or f/4 (a bit more/less light). Enjoy

Might be handy for some people. How have you been using it?

cheers

I use it to compare primes or zoom lenses. I am interested in low light performance.

 

[Highergr0und]

Sorry, OP, my response was snarky.

 

[Bob A L]

Guess I don't understand what the chart is about. Is it something to do with depth of field when using lenses on different sensor sizes?

 

[Supisiche]

Guess I don't understand what the chart is about. Is it something to do with depth of field when using lenses on different sensor sizes?

Yes, same dof and same amount of light entering the front of the lens.

 

[Supisiche]

Sorry, OP, my response was snarky.

(⊃｡•́‿•̀｡)⊃

 

[Bob A L]

I can go along with some possible dof effects, but what size sensor is behind lens has no effect whatsoever on how much light enters the front of the lens or exits the back of the lens. How could sensor size change the physical properties of a lens? Sensor only records whatever portion of the image circle projected by the lens that it covers. How much of the image circle you record with sensor can not change what is in that image circle.

 

[Supisiche]

I can go along with some possible dof effects, but what size sensor is behind lens has no effect whatsoever on how much light enters the front of the lens or exits the back of the lens. How could sensor size change the physical properties of a lens? Sensor only records whatever portion of the image circle projected by the lens that it covers. How much of the image circle you record with sensor can not change what is in that image circle.

I know but the chart assumes that you use a shorter lens in the smaller sensor camera.

 

[BrentSchumer]

I can go along with some possible dof effects, but what size sensor is behind lens has no effect whatsoever on how much light enters the front of the lens or exits the back of the lens. How could sensor size change the physical properties of a lens? Sensor only records whatever portion of the image circle projected by the lens that it covers. How much of the image circle you record with sensor can not change what is in that image circle.

Why would you care about the amount of light in the image circle if only a subset of it hits your sensor?