TME said:
Check dpreview forum.. Can't be top glass lah :bsmilie:
http://forums.dpreview.com/forums/read.asp?forum=1035&message=13974391
Sigma 18-50mm f/2.8 EX DC
- Thread starter Caussway
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Check dpreview forum.. Can't be top glass lah :bsmilie:
http://forums.dpreview.com/forums/read.asp?forum=1035&message=13974391
Hiee Pals....
Well.......no doubt glass is still "the" preferred material....but I'm sure with modern manufacturing techniques and materials engineering........there are hybrid lens out there are as good or very close to the glass lens....now as people (consumers) call for lighter equipment......well seem like plastics are the way to go......
I have owned some consumer grade Sigmas and well...i could only say that they do perform to its price.......and with extra care and practice......nobody could tell if your photos are taken with glass or plastic..... :bsmilie:
rgds,
sulhan
Well.......no doubt glass is still "the" preferred material....but I'm sure with modern manufacturing techniques and materials engineering........there are hybrid lens out there are as good or very close to the glass lens....now as people (consumers) call for lighter equipment......well seem like plastics are the way to go......
I have owned some consumer grade Sigmas and well...i could only say that they do perform to its price.......and with extra care and practice......nobody could tell if your photos are taken with glass or plastic..... :bsmilie:
rgds,
sulhan
i ordered this lens 2 months ago, Sigma Malaysia told me it was EOLed....!! well, now they re-confirm with me that order is available due to some confusion cause with Sigma distributor in SG.
my friend who use this lens on canon mount highly recommend me to purchase this lens. The photos he took is sharp, and the bokeh is beautiful even at F3.5
my friend who use this lens on canon mount highly recommend me to purchase this lens. The photos he took is sharp, and the bokeh is beautiful even at F3.5
Something I just found out about this lens from Sigma'a website.
18-50mm widest angle of view is 69.3 degrees
17-35mm widest angle of view is 103.7 degrees
why so much difference with just 1mm?
does nearer/wider focal length correspond to the angle of view?
18-50mm widest angle of view is 69.3 degrees
17-35mm widest angle of view is 103.7 degrees
why so much difference with just 1mm?
does nearer/wider focal length correspond to the angle of view?
HIee Drudkh.....
Well as you approach wider angle.....per chnage in the focal length equates to a larger field of view change. Unlike towards the telephoto range where the change gets less.....
Just put two fingers in parallel in front of your eyes.......to simulate framing....
Well move it in towards your eyes.....and you see it gets wider faster than if you have the frame further away (long focal length).....
1mm towards the wide region is BIG!!!!!...the 17-35mm from KM.....is one i would recommend you guys...........after using its and understanding its weakness and strength......well......it could be used to get really great high detail and contrast pics.....
BTW...t
rgds,
sulhan
Well as you approach wider angle.....per chnage in the focal length equates to a larger field of view change. Unlike towards the telephoto range where the change gets less.....
Just put two fingers in parallel in front of your eyes.......to simulate framing....
Well move it in towards your eyes.....and you see it gets wider faster than if you have the frame further away (long focal length).....
1mm towards the wide region is BIG!!!!!...the 17-35mm from KM.....is one i would recommend you guys...........after using its and understanding its weakness and strength......well......it could be used to get really great high detail and contrast pics.....
BTW...t
rgds,
sulhan
Hahaha....thats a good one....
I totally missed out on that......in fact by right the difference should be about 3~4 degrees between the two lens at wide i think.....
Okay....games over......you guys know what......
its very common in the lens specs world that they round things off.......
e.g the sigma 70-300.....its not even until 300mm FOV......
So what makes you think 17 vs 16 vs 18 mm "labelled" lens have great...differences....?
Only way to do is to try it out your self......take a shot and see....
Use this as a guide for rectilinear lens - Guide....
Bummer...
Rgds,
sulhan
I totally missed out on that......in fact by right the difference should be about 3~4 degrees between the two lens at wide i think.....
Okay....games over......you guys know what......
its very common in the lens specs world that they round things off.......
e.g the sigma 70-300.....its not even until 300mm FOV......
So what makes you think 17 vs 16 vs 18 mm "labelled" lens have great...differences....?
Only way to do is to try it out your self......take a shot and see....
Use this as a guide for rectilinear lens - Guide....
Bummer...
Rgds,
sulhan
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