- Thread starter KT1031
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THis link will give u a clearer picture

http://imaging.nikon.com/products/imaging/lineup/lens/simulator/index.htm

yes, when using DX lens on crop, you need to multiply the crop factor as well

Multiply a lens' focal length by 1.5 to get the focal length of a lens which, when used on a full-frame or 35mm film camera, gives the same angle of view as that lens does on one of these DX cams

THis link will give u a clearer picture

http://imaging.nikon.com/products/imaging/lineup/lens/simulator/index.htm

Bro, DX lens are designed for crop coverage.. dun think need to include the crop factor

Multiply a lens' focal length by 1.5 to get the focal length of a lens which, when used on a full-frame or 35mm film camera, gives the same angle of view as that lens does on one of these DX cams

Multiply a lens' focal length by 1.5 to get the focal length of a lens which, when used on a full-frame or 35mm film camera, gives the same angle of view as that lens does on one of these DX cams

else the sigma 8-16mm will be the widest, instead of Sigma 12-24mm for FF

To be precise, the 18-105DX lens has a

However, when mounted on a DX camera, it gives the equivalent

To further confuse matters, the 18-105 is designated DX, because the

* gosh I hope I'm right :angel: Someone correct me if I've made a mistake.

To be precise, the 18-105DX lens has a

However, when mounted on a DX camera, it gives the equivalent

To further confuse matters, the 18-105 is designated DX, because the

* gosh I hope I'm right :angel: Someone correct me if I've made a mistake.

yes, when using DX lens on crop, you need to multiply the crop factor as well

Just to make things alot simpler any lens,

Be it DX lens or FX lens when mounted on DX(crop) camera needs to be multiplied by the crop factor.

Even 4/3 sensors the lens focal length needs to multiply by crop factor(FOV)

Now I hope what I said is right..

To be precise, the 18-105DX lens has a

However, when mounted on a DX camera, it gives the equivalent

To further confuse matters, the 18-105 is designated DX, because the

* gosh I hope I'm right :angel: Someone correct me if I've made a mistake.

so can i say that,

Assuming crop factor of 1.5x

a 50mm on DX is 75mm and remain as 50mm on FX,

while a 50mm DX (assuming)

is 50mm on DX but 75mm on FX?

:sweat: hope i m getting it right

hahaa. i m confuse.

so can i say that,

Assuming crop factor of 1.5x

a 50mm on DX is 75mm and remain as 50mm on FX,

while a 50mm DX (assuming)

is 50mm on DX but 75mm on FX?

:sweat: hope i m getting it right

so can i say that,

Assuming crop factor of 1.5x

a 50mm on DX is 75mm and remain as 50mm on FX,

while a 50mm DX (assuming)

is 50mm on DX but 75mm on FX?

:sweat: hope i m getting it right

50mm will always be 50mm on FX.

50mm will always have a FOV of 75mm on a DX

so can i say that,

a 50mm on DX is 75mm and remain as 50mm on FX,

while a 50mm DX (assuming)

is 50mm on DX but 75mm on FX?

:sweat: hope i m getting it right

For nikon lenses, if they are not designated DX, then they can be used on both FX and DX cameras.

To be precise, the 18-105DX lens has a

However, when mounted on a DX camera, it gives the equivalent

To further confuse matters, the 18-105 is designated DX, because the

* gosh I hope I'm right :angel: Someone correct me if I've made a mistake.

Yes you do. All lens markings are based on 35mm.

You need to ;p

else the sigma 8-16mm will be the widest, instead of Sigma 12-24mm for FF

else the sigma 8-16mm will be the widest, instead of Sigma 12-24mm for FF

what i m merely trying to convey is that on DX, its gives a equivalent field-of-view as of 1.5X (factor in the crop) when mounted on an FX camera.

in the case of 18-105mm DX,

if i dun wanna get the vignetting, i have to shoot at 18*1.5 = 27mm ar?

sorry but abit confuse abt the DX lens on FX body part.

if i dun wanna get the vignetting, i have to shoot at 18*1.5 = 27mm ar?

sorry but abit confuse abt the DX lens on FX body part.

If you already have the D90 and the 18-105, you can simply shoot at 18mm and see for yourself, right? There's no vignetting.

Now if you mount this lens (designated DX) on a 35mm camera (eg. a Nikon film SLR), what you'll get is a circular image with huge black borders. Like extreme vignetting.

There are lots of websites about this DX and FX difference that probably explain it better than what I'm struggling with now.

if i dun wanna get the vignetting, i have to shoot at 18*1.5 = 27mm ar?

sorry but abit confuse abt the DX lens on FX body part.

DX lenses are lenses which only cover the smaller sensor of DX digital cameras and are never designed for FF usage. U can use and enable the "DX Mode" of the FF cam but only 5MB of the sensor is used (middle portion)

If not u wil have major vignetting, See post #6 in this for a clearer understanding