If I use a DX lens set at 18mm on a DX body and I use a FX lens set at 18mm on a DX body. Will I get the same field of view?

Straight forward answers will be very much appreciated.

Thanks

- Thread starter teojm37
- Start date

If I use a DX lens set at 18mm on a DX body and I use a FX lens set at 18mm on a DX body. Will I get the same field of view?

Straight forward answers will be very much appreciated.

Thanks

If I use a DX lens set at 18mm on a DX body and I use a FX lens set at 18mm on a DX body. Will I get the same field of view?

Straight forward answers will be very much appreciated.

Thanks

says who?

If you use the same type of camera (DX), mouting an FX lens and DX lens with the same stated focal length (eg. 18mm) will give you the same field of view.

If you use the same type of camera (DX), mouting an FX lens and DX lens with the same stated focal length (eg. 18mm) will give you the same field of view.

His questions goes: If I use a

Unless I am reading it wrongly. :bigeyes:

If you use the same type of camera (DX), mouting an FX lens and DX lens with the same stated focal length (eg. 18mm) will give you the same field of view.

When you mount an 18mm FX lens on a DX camera, it will give you an equivalent of 18mm x 1.5 = 27mm equiv (or 76 degrees angle of view).

When you mount an 18mm DX lens on a DX camera, it will also give you an equivalent of 18mm x 1.5 = 27mm equiv (or 76 degrees angle of view) also.

It is only when you mount an 18mm FX lens on an FX camera, then it will give you an 18mm equiv (or 100 degrees angle of view).

Says me~ ;p.

His questions goes: If I use a**DX lens set at 18mm on a DX body **and I use a **FX lens set at 18mm on a DX body**. Will I get the same field of view?

Unless I am reading it wrongly. :bigeyes:

His questions goes: If I use a

Unless I am reading it wrongly. :bigeyes:

When you are using FX body, then you don't use the multiplier.

His questions goes: If I use a

Unless I am reading it wrongly. :bigeyes:

His questions goes: If I use a

Unless I am reading it wrongly. :bigeyes:

hope it's clear now for everyone.

Last edited:

http://vimeo.com/14832168

SeldomHere

then can you mount a DX Lens on a FX body ?

On the other hand, using a FX lens on DX body means you are wasting 24 degrees of good lens space because your lens is capable of taking 100 degrees, but you're only using 76 degrees of it. Your picture will come out nice with no problem, which is why it's OK (sometimes preferable) to mount FX lens on DX body, but very seldom you see people doing it the other way round because black round circle around your picture.

Last edited:

then can you mount a DX Lens on a FX body ?

In options, you can turn off this auto detection and force the camera to use the full FX sensor all the time. Lenses meant for DX will work with the full FX sensor for a portion of the zoom range. For example, the Tokina 11-16 when mounted on a FX cam, will show heavy vignetting 11-15mm but it is fully usable at 16mm on a FX body.