Sigma 70-300mm APO DG Macro

[mattchewone]

Just wondering what you guys would say is the best aperture to use on the lens to get the sharpest images. Should i also stay away from going maximum and widest to get the best images?

I am going to the French Car Show this Sunday and would like to know what settings to stay between to get the best images possible.

Thanks
Matt

 

[markta]

Invariably it'll be at its best between f8 and 11, like most other lens. Never had one myself but as a general rule of thumb, stopped down to between these values will render maximum sharpness

 

[mattchewone]

Thank you, this may be why most of my images are coming out fairly soft as i am using f/5.6 or something.

Ill give that a go at the weekend for car shots and i might even do multiple shots through the aperture range to test it lol.

 

[markta]

It should be reasonably sharp at 5.6.

Is your shutter speed fast enough? If not, you may need to increase the ISO, because 5.6 IIRC is wide open on your lens

 

[Snootchies]

I've got the Tamron version of this lens, and generally find F8 to be pretty sharp.

 

[mtxfiesta]

heres a little test someone on another forum done with theirs not to sure if they are on here though
http://www.detailingworld.co.uk/forum/showthread.php?t=112086

 

[mattchewone]

heres a little test someone on another forum done with theirs not to sure if they are on here though
http://www.detailingworld.co.uk/forum/showthread.php?t=112086

Thank you, i think ill need to do something similiar to mine soon to get the sweet spot for my Lens. But i guess it will be fairly similar to his.

 

[willbaroo]

Even though I have just got a Canon 70-200 L f/4 could this theory be applied to my old 47-300 USM III lens?