Quick doubt: FF comparable Asp-C lenses

[balazer2]

The lenses are not equivalent, but the field of view is.

Should I have said they are equivalent in terms of their field of view? That's almost always what is meant when two lenses in different formats are described as "equivalent".

 

[Mendel314]

Batis is the closest you'll come for FOV, but if speed is your priority, then the sigma Art 20mm f1.4 might be worth looking at. A little narrower (which with UWA is not insignificant), but a lot faster.

 

[arthalion]

If today I have the SEL16F28(16mm F2.8mm) and i wanted to have something with the same "angle of view" for my future full frame.

The SEL28F20 could be a Lense with the same "angle of view" but much "faster" F1.2 vs F2.8?.

Regards.

Jaime.

An APS-C 16 mm f/2.8 lens is equivalent to a full-frame 24 mm f/4.2 lens.

A full-frame 28 mm lens would not be quite as wide.

The lenses are not equivalent, but the field of view is.

Thanks. So I understand that the angle of view could be equivalent. with the 1.5X crop factor.

However regarding Aperture I'm not quite Sure.

a APS-C sensor with a 16mm 2.7F lense would receive the same amount of light than a Full Frame Sensor with a 24mm 2.7F lense?

(asuming same exposure).

Or APS-C pìcture would be darker for example?.

Jaime.

 

[JimKasson]

If today I have the SEL16F28(16mm F2.8mm) and i wanted to have something with the same "angle of view" for my future full frame.

The SEL28F20 could be a Lense with the same "angle of view" but much "faster" F1.2 vs F2.8?.

Regards.

Jaime.

An APS-C 16 mm f/2.8 lens is equivalent to a full-frame 24 mm f/4.2 lens.

A full-frame 28 mm lens would not be quite as wide.

The lenses are not equivalent, but the field of view is.

Thanks. So I understand that the angle of view could be equivalent. with the 1.5X crop factor.

However regarding Aperture I'm not quite Sure.

a APS-C sensor with a 16mm 2.7F lense would receive the same amount of light than a Full Frame Sensor with a 24mm 2.7F lense?

(asuming same exposure).

Or APS-C pìcture would be darker for example?.

Jaime.

We're slipping into the E-zone. Read this (several times, if necessary) and see if you still have questions:

http://www.josephjamesphotography.com/equivalence/

Jim

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