04-18-2011, 07:44 AM
My first question would be, why would you prefer
a 150/180mm macro lens over a 100mm macro lens?
Is this for the distance to the subject?
In that case, let us have a look on the effective focal length that these lenses
have at MFD (minimum focus distance).
The Sigma has MFD of 38cm and has a focal length of 95mm there.
The Tamron has MFD of 47cm and has a focal length of 118mm there.
The Canon 100L has MFD of 30cm and has a focal length of focal length of 75mm there.
So, regarding the focal length I would prefer the Tamron over the Sigma.
On the other hand, if you look especially for the support of in-lens image stabilisation,
I would really have a look on the EF 100L (especially, since the price for the Sigma is
quite bold as well).
In all, I believe that with macro-lenses you don't really make a mistake regardless
which one you take. They are all quite good.
Just my 2cts ... Rainer
a 150/180mm macro lens over a 100mm macro lens?
Is this for the distance to the subject?
In that case, let us have a look on the effective focal length that these lenses
have at MFD (minimum focus distance).
The Sigma has MFD of 38cm and has a focal length of 95mm there.
The Tamron has MFD of 47cm and has a focal length of 118mm there.
The Canon 100L has MFD of 30cm and has a focal length of focal length of 75mm there.
So, regarding the focal length I would prefer the Tamron over the Sigma.
On the other hand, if you look especially for the support of in-lens image stabilisation,
I would really have a look on the EF 100L (especially, since the price for the Sigma is
quite bold as well).
In all, I believe that with macro-lenses you don't really make a mistake regardless
which one you take. They are all quite good.
Just my 2cts ... Rainer