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I own a Canon 6D and I need a general purpose zoom but I can't afford to buy an L lens, even an used one.

I've read here about 28-80 USM I and 28-70 f/3.5-4.5 II. The author claims that those lenses are sharp. I couldn't find any MTF or chart with those lenses on a FF camera.

At about the same price I can buy a 28-105 f/2.5-4.5 USM but from charts it seem its resolution is horrible. Apart from bad sharpness, it has very poor contrast. I've seen chart shot with it on this site .

CouldCan 28-80 or 28-70 be any better?

Is there any better old, cheap consumer zoom from Tamron, Tokina or Sigma which can be had for around 100 USD used?

I own a Canon 6D and I need a general purpose zoom but I can't afford to buy an L lens, even an used one.

I've read here about 28-80 USM I and 28-70 f/3.5-4.5 II. The author claims that those lenses are sharp. I couldn't find any MTF or chart with those lenses on a FF camera.

At about the same price I can buy a 28-105 f/2.5-4.5 USM but from charts it seem its resolution is horrible. Apart from bad sharpness, it has very poor contrast. I've seen chart shot with it on this site .

Could 28-80 or 28-70 be any better?

Is there any better old, cheap consumer zoom from Tamron, Tokina or Sigma which can be had for around 100 USD used?

I own a Canon 6D and I need a general purpose zoom but I can't afford to buy an L lens, even an used one.

I've read here about 28-80 USM I and 28-70 f/3.5-4.5 II. The author claims that those lenses are sharp. I couldn't find any MTF or chart with those lenses on a FF camera.

At about the same price I can buy a 28-105 f/2.5-4.5 USM but from charts it seem its resolution is horrible. Apart from bad sharpness, it has very poor contrast. I've seen chart shot with it on this site .

Can 28-80 or 28-70 be any better?

Is there any better old, cheap consumer zoom from Tamron, Tokina or Sigma which can be had for around 100 USD used?

1
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Which is the better lens: Canon 28-80 USM I, 28-70 f/3.5-4.5 II or 28-105 f/3.5-4.5 II?

I own a Canon 6D and I need a general purpose zoom but I can't afford to buy an L lens, even an used one.

I've read here about 28-80 USM I and 28-70 f/3.5-4.5 II. The author claims that those lenses are sharp. I couldn't find any MTF or chart with those lenses on a FF camera.

At about the same price I can buy a 28-105 f/2.5-4.5 USM but from charts it seem its resolution is horrible. Apart from bad sharpness, it has very poor contrast. I've seen chart shot with it on this site .

Could 28-80 or 28-70 be any better?

Is there any better old, cheap consumer zoom from Tamron, Tokina or Sigma which can be had for around 100 USD used?