Help!!! which LENS??

[12es]

Tamron AF 28-300mm f/3.5-6.3 XR Di LD IF

or

Sigma 28-300mm F3.5-6.3 MACRO

for Canon 20D!!!!

Which one is suitable????? any comments? The Tamron is more expensive than the Sigma, is there a catch with the Sigma???????? AAAARGGGHHH!!!!!!

[Andy_T]

12ES,

you should be aware that BOTH of these lenses are not exactly stellar.


Generally, so-called 'Hyperzooms' (zooms with a very long zoom range, e.g. 28-300) do not give the greatest picture quality.

This is because it is difficult to construct a zoom that delivers good image quality in all zoom ranges. Normally, lenses are sharper in the middle range and not so sharp at the extremes (especially max telephoto).

Take a look at this article (http://www.e-fotografija.com/artman/publish/article_306.shtml) (actually it's about the Canon 70-300 DO, but the Tamron is used as comparison there) ... when you look at the sample images, you will notice that the pictures are not very sharp.

For this very reason, SLRs allow you to swap lenses. Unless you really absolutely do not want to have two lenses and switch between them, you will be better off with more lenses with shorter zooms (e.g. Canon 75-300).

Hope that helps.

Best regards,
Andy

[cmM]

Wrong forum ;)

**Edit, never mind... I obviously can't read at 8:48 in the morning very well.

[12es]

I took your word for it, I bought the Canon EF 75 – 300mm 4 – 5.6 IS USM.................THX!!!


12ES,

you should be aware that BOTH of these lenses are not exactly stellar.


Generally, so-called 'Hyperzooms' (zooms with a very long zoom range, e.g. 28-300) do not give the greatest picture quality.

This is because it is difficult to construct a zoom that delivers good image quality in all zoom ranges. Normally, lenses are sharper in the middle range and not so sharp at the extremes (especially max telephoto).

Take a look at this article (http://www.e-fotografija.com/artman/publish/article_306.shtml) (actually it's about the Canon 70-300 DO, but the Tamron is used as comparison there) ... when you look at the sample images, you will notice that the pictures are not very sharp.

For this very reason, SLRs allow you to swap lenses. Unless you really absolutely do not want to have two lenses and switch between them, you will be better off with more lenses with shorter zooms (e.g. Canon 75-300).

Hope that helps.

Best regards,
Andy

[robertwgross]

Which one is suitable?????

You might want to describe what kind of photography you do. Some lenses are really good at one narrow range of subjects. Other lenses are moderately good for everything. And then there is Quantaray.

---Bob Gross---