Teleconverters

[Drudkh]

When using TC, lets say a 2.0X, the f-stop will increase right? But, by how much?

Example: 2.0X TC + lens with f5.6
What is the largest aperture I can get? I heard people saying increase 2 stops but what will it be?

I don't own a TC, so need you guys to contribute.

Thanks.

 

[Del_CtrlnoAlt]

f6.3? f8? depends on the TC i guess, i wonder if the Minolta TC, auto shows the widest aperture.

 

[jonoq]

When using TC, lets say a 2.0X, the f-stop will increase right? But, by how much?

Example: 2.0X TC + lens with f5.6
What is the largest aperture I can get? I heard people saying increase 2 stops but what will it be?

I don't own a TC, so need you guys to contribute.

Thanks.

Just brought 1..mine will cause my len to increase 2 stop.

 

[user111]

When using TC, lets say a 2.0X, the f-stop will increase right? But, by how much?

the maximum aperture will be decreased by effectively 2 stops
pls do not use the word "increase" because even though the marked value of the maximum aperture is numerically increased, the fact is that it is decreased

Example: 2.0X TC + lens with f5.6
What is the largest aperture I can get? I heard people saying increase 2 stops but what will it be?

if the lens starts off with maximum aperture of f5.6, then adding a 2x tc to it will decrease the maximum aperture to f11. however do note that from 5.6 to 11, it is a numerical increase

 

[Drudkh]

ok, lets not use increase or decrease,
lets say the lens is f6 and using 2.0X TC, the largest aperture will be f12?
so that means 1 f-stop is refered to the lens largest aperture, be it f5.6 or f8. but once used with a 2.0X TC, 2 f-stops, it becomes f11 and f16?

Am I right?

 

[2100]

so that means 1 f-stop is refered to the lens largest aperture, be it f5.6 or f8. but once used with a 2.0X TC, 2 f-stops, it becomes f11 and f16?

Am I right?

Yeah correct, sort of.

You are using Minolta system right?

 

[Drudkh]

Yeah correct, sort of.

You are using Minolta system right?

yup. thank you all for the input, finally i have confirmed the theory.
:thumbsup: