One MUST go !!
Davex.
Pentax, the difference between mount composition is irrelevant unless you are changing several times a day, each day. so keep the lighter weight, and better colour. IMHO.
Davex.
The Pentax is very soft below F11 though, the Sigma is better !?
Stu - K10D | DFA 100/2.8 Macro | DA 55-300 | AF-360FGZ |
So much to learn... So little time !
Dan
And the Sigma does half life-size macro too. Does it really 'weigh a ton'?
Dan
But ONLY at 300mm !! which isn't overly useful
It's about 170gms heavier than the Pentax !!!
Stu - K10D | DFA 100/2.8 Macro | DA 55-300 | AF-360FGZ |
So much to learn... So little time !
As davex suggest the plastic mount shouldn't be a problem, however if the Sigma is a better lens wide open then given that these are 300mm lenses and probably used wide open quite often then it stands to reason to keep the Sigma, colour can always be adjusted later in photoshop whereas correcting softness from the lens is a bit trickier.
I assume the Sigma is a KAF mount (has an aperture ring) which would make it a more desireable lens if you came to sell it, the Pentax has limitations if anyone wanted to use it on an older body, which makes the Sigma the better investment, IMHO of course
The Pentax is very soft below F11 though, the Sigma is better !?
How often would you be using f16 on a non-macro tele though?
The Pentax is very soft below F11 though, the Sigma is better !?
How often would you be using f16 on a non-macro tele though?
So you're saying keep the Sigma if it's better wide open, right ??
Stu - K10D | DFA 100/2.8 Macro | DA 55-300 | AF-360FGZ |
So much to learn... So little time !
Shame really as I wanted it to be the Pentax !
So it looks like I'm selling the Pentax, if anyone's interested !??
Will put it in classified shortly otherwise
Stu - K10D | DFA 100/2.8 Macro | DA 55-300 | AF-360FGZ |
So much to learn... So little time !
Serious though the DA-L version is very good value for the money and is sharper at the long end than the Sigma.
I only believe the AF isn't as fast as on the Sigma but I don't have any of the two so can't say from experience
Depends what I can get for the other two !? No idea really ??
Stu - K10D | DFA 100/2.8 Macro | DA 55-300 | AF-360FGZ |
So much to learn... So little time !
Pentax K-1 + K-5 and some other stuff
Algi
Looks like I could be selling BOTH then !!
Stu - K10D | DFA 100/2.8 Macro | DA 55-300 | AF-360FGZ |
So much to learn... So little time !
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385 posts
14 years
UK
On testing today I find :
the Pentax gives better colour, weighs a lot less, but has a plastic mount !
the Sigma is slightly better wide open, weighs a ton, but has a metal mount !
Which do I keep ?? Any thoughts ???
Stu - K10D | DFA 100/2.8 Macro | DA 55-300 | AF-360FGZ |
So much to learn... So little time !