well im just afraid the magnification wont be as good, because my friend has the tamron 300m its a 1:2 and the performance on it that ive seen isnt up to my standards but maybe it was caused by the camera she uses and other things, im not sure...
i think the type i would take would be bugs that are already dead, unless i run into something i can take at a close distance without distracting it.

yeah if i got the L macro then i would of spent all my money.
i still want a telephoto wide angle.

the add on is a wide angle fisheye, but you can take them apart.

well the tamron 300mm isnt a macro lens, noe i think its very good lens enyway. if you shoot macro with 300mm you need to get camera really steady or use really fast shutterspeed to get sharp pics. real short shutterspeed combined to really slim focused area caused by so long lens, you need to use f/22 to get even useable focused area

for bugs something around 100mm would be good, but good luck finding bugs in the next few months . if your lucky you might find a dead one between windows or somewhere like that

sorry but you cant get good tele and wide angle in same lens, you need a zoom for that and zooms arent good enough for macro(if you want even desent quality), unless its some really good lens then the resaults may be useable.

maybe ill find a bug collector! gross. >.<

the tamron 300mm is a 1:2 macro lens.


so should i get the

70mm or 105mm?

or go for canon?

the 70mm is more expensive than the 105mm

and what is this?!

Number of Diaphragm Blades ?

70mm


Lens Construction


10 Elements in 9 Groups
Angle of View 34.3 degrees
Number of Diaphragm Blades 9 Blades
Minimum Aperture F22
Minimum Focusing Distance 25.7cm/10.1 in.
Maximum Magnification 1:1
Filter Size Diameter 62mm
Dimensions Diameter 76mm X Length 95mm
3.0 in. X 3.7 in.
Weight 525g / 18.5 oz.
Corresponding AF Mounts SIGMA, CANON, NIKON (D), SONY, PENTAX


105mm


Depth of field of medium telephoto macro lenses is generally very shallow; however, Sigma, Canon and SONY mounts of this lens have a minimum aperture of F45 (or F22 for FOUR THIRDS or F32 for Nikon and Pentax mounts) for incredible depth of field

Lens Construction


11 Elements in 10 Groups
Angle of View 23.3 degrees
Number of Diaphragm Blades 8 Blades
Minimum Aperture F45: CANON, SIGMA,SONY
F32: NIKON, PENTAX
F22: FOUR THIRDS
Minimum Focusing Distance 31.3cm/12.3 in.
Maximum Magnification 1:1
Filter Size Diameter 58mm
Dimensions Diameter 74mm X Length 97.5mm
2.9 in. X 3.8 in.
Weight 457g/16.1 oz.
Corresponding AF Mounts

SIGMA,
CANON,
NIKON (D),
SONY/MINOLTA,
PENTAX,
FOUR THIRDS

this tamron? http://www.tamron.com/lenses/prod/70300_di_a017.asp

its not real macro lens even tho it says macro, same on meny sigma zooms. real macro is coinsidered 1:1 on full frame

i doubt that there is eny difference on iq between the 70mm and 105mm, or maybe wide open but no one macros wide open, you need f/16+. you do know that macroing needs quite alot of light? imo the 70mm isnt long enough for macroing, but that depends on what you shoot at, for bugs get the 105mm imo.

Number of diaphragm blades means the number of those blades that sets the aperature. basicly more blades = rounder bokeh balls = softer bokeh, but the 105mm has awesome bokeh and one blade less doesent really make eny difference

forgot to mention that sigma 105 gets longer when focusing and canon 100mm(non L) doesent, if that makes difference and you dont care about canon costing bit more, you could go with the canon. but canon is bigger, with lens hood its the same length as the sigma with lens hood and focused at its longest(dunno if the lens is long when focusing close or at infinity)

f/45 on the 105mm is really nice, but it allso needs hella lot of light.

leave food on the tables and dont clean the house and if your lucky you might be able to get some flys there

If you want a macro lens I can recommend tamron 90 / 2.8.
I use it and I love it!

can you show me some of your photos shot with it?

the 180 looks amazing!

i love cannon lenses, always have and always will. sorry thats the only input i have