Canon lenses (Page 2): On a crop sensor body the 18-55 is = to 28-80 and the 28-80 is = to 42-120. In close the 18-55 will be best while farther away the 28-80 may be better, depending...

gessman Loc: Colorado

elf wrote:

Aloha, please pardon my ignorance, will you tell me which lens would give a sharper picture. (1) kit lens EFS 18-55 1.35-5.6 IS 11 or EF 28-80 1.35-5.6? both are wide but the 28-80 I think is better for portraits. What are your thoughts? God bless Ed

On a crop sensor body the 18-55 is = to 28-80 and the 28-80 is = to 42-120. In close the 18-55 will be best while farther away the 28-80 may be better, depending on how far away.

elf

Thanks guys, this is more what I was looking for.

Jim Bob

dsmeltz wrote:

If a subject is stationary (like with a landscape)... (show quote)

The fact that a subject is in motion or stationary does not affect the inherent sharpness of the lens. Come on.

zigipha Loc: north nj

Jim Bob wrote:

The fact that a subject is in motion or stationary does not affect the inherent sharpness of the lens. Come on.

I concur; the stated conditions will determines the sharpness of the image but is orthogonal to the sharpness of the lens discussion

elf

I think that sharpness of a lens is dependent on its quality. I only wanted to know which had the highest quality.
Ed

Jim Bob

zigipha wrote:

I concur; the stated conditions will determines the sharpness of the image but is orthogonal to the sharpness of the lens discussion

Othowhatl? I likes that.

:lol:

dsmeltz Loc: Philadelphia

Jim Bob wrote:

The fact that a subject is in motion or stationary does not affect the inherent sharpness of the lens. Come on.

But it will affect the sharpness of the image given limitations of the lens. If an object is stationary you can use a slower shutter speed and smaller apeture and still get a sharp image. If the subject is in motion, you cannot.

Blurryeyed Loc: NC Mountains.

I know that you did not ask, but it seems like you are trying to purchase on a tight budget, the kit lens is really a pretty good lens, it gets a bit of a bad rap but has very decent image quality. The 28-80, does not review as well but for a bit more you can probably find a 28-135 at a very reasonable price that offers what is in my opinion the best ban for the buck.

Jim Bob

dsmeltz wrote:

But it will affect the sharpness of the image given limitations of the lens. If an object is stationary you can use a slower shutter speed and smaller apeture and still get a sharp image. If the subject is in motion, you cannot.

Duh, yeah. Tell us something that we don't know. The inquiry was about lens sharpness.

dsmeltz Loc: Philadelphia

Jim Bob wrote:

Duh, yeah. Tell us something that we don't know. The inquiry was about lens sharpness.

And double DUH, lens sharpness is partially dependant on environment in which it is used. Only people who blindly follow lab only tests (like DxO) believe otherwise. If you are trying to compare the sharpness of lenses, the conditions of use are vitally important. You ignore that at your own risk.

DUH :roll: :roll: :roll:

Jim Bob

dsmeltz wrote:

And double DUH, lens sharpness is partially dependant on environment in which it is used. Only people who blindly follow lab only tests (like DxO) believe otherwise. If you are trying to compare the sharpness of lenses, the conditions of use are vitally important. You ignore that at your own risk.

DUH :roll: :roll: :roll:

Only idiots and ideologues disregard objective criteria and base conclusions solely or primarily on unreliable subjective ones. Regardless of shifting conditions, certain lenses are simply sharper than others. Period. Now ignore that.

dsmeltz Loc: Philadelphia

Jim Bob wrote:

Only idiots and ideologues disregard objective criteria and base conclusions solely or primarily on unreliable subjective ones. Regardless of shifting conditions, certain lenses are simply sharper than others. Period. Now ignore that.

Ok. Slowly.

So you can follow it.

At no time did I say not to use objective measures.

EVER.

AT NO TIME.

What I did say was you need to take the environment in to consideration. It is with this you seem to have an issue. So if anyone is disregarding information, it is you.

Different lenses behave differently. I know, tough concept but one that is very important in photography.

The OP initially asked only about sharpness, however later elaborated on the subjects being shot. Primarily asking about two very different environments as well as why a flash can help get a sharper shot.

elf wrote:

<snip> the Blood moon the other night! Sunday I will photograph a 55th wedding anniversary party.

elf wrote:

For sure I will use flash. What does that have to do with the sharpness of the lens? Ed

I was addressing those issues. And those issues are variable depending on the setting and the subject.

Please, in the future, try to fully read the thread before making unwarranted, personal attacks. Or you may find yourself at the other end of more accurate name calling.

Jim Bob

dsmeltz wrote:

I was addressing those issues. And those issues are variable depending on the setting and the subject.

Please, in the future, try to fully read the thread before making unwarranted, personal attacks. Or you may find yourself at the other end of more accurate name calling.

Re-read my previous entry, again and again and maybe it will stick.

dsmeltz Loc: Philadelphia

Jim Bob wrote:

Only idiots and ideologues disregard objective criteria and base conclusions solely or primarily on unreliable subjective ones. Regardless of shifting conditions, certain lenses are simply sharper than others. Period. Now ignore that.

In the hands of someone who does not know what they are doing (OR TALKING ABOUT) shifting conditions matter.

Period.

I expect you to ignore that. You are just that type.

Conversing with you has also become pointless and I will ignore your comments in the future.

Jim Bob

dsmeltz wrote:

In the hands of someone who does not know what they are doing (OR TALKING ABOUT) shifting conditions matter.

Period.

I expect you to ignore that. You are just that type.

Conversing with you has also become pointless and I will ignore your comments in the future.

Ibid.