Graduated Neutral Filters

[psccy]

I think I am probably posting this in the wrong forum group... But since I have been getting most of the advice I was looking for through fellow Sony users, i thought what the heck...

I have been having LOTS of difficulty getting my hands on a graduated ND filters that screws straight onto the lens... only could get a cokin one (square piece that sits on a mount...)

which is better? the round ones or the cokin square one?

Where can I get the round ones?

[Ansel]

With the square ones with holder, you can slide the filters to the position that you require for the subject on hand. People usually will have to position the graduation depending on their situation and a round fixed filter with a fixed graduating position may not be that flexible.

[night86mare]

Square. Why you want round? Round means the graduation is die die fix one place leh!

[satay16]

me prefer square too. just need different adapters to use the same filter. cost effective.

[Del_CtrlnoAlt]

paiseh, Cokin Grad filter is rectangle... normal non grad filters are square...

hence can pull up & down to have different shades of effect.

the strangest part of my few days excursion, i have a cokin normal 3 piece filter mount and a wide angle 1 filter mount, fitted on my tamron 17-50. With a wide angle mount since i use mostly 17mm, i get vignetting, and with the 3 piece filter, i dun.... super strange...

[zcf]

Originally Posted by Del_CtrlnoAlt paiseh, Cokin Grad filter is rectangle... normal non grad filters are square... hence can pull up & down to have different shades of effect. the strangest part of my few days excursion, i have a cokin normal 3 piece filter mount and a wide angle 1 filter mount, fitted on my tamron 17-50. With a wide angle mount since i use mostly 17mm, i get vignetting, and with the 3 piece filter, i dun.... super strange...

Strange indeed, may be wide angle filter holder connector to the ring holder is too thick?

I got not vignetting problem even using the modded Tian Ya filter holder on my Sigma 10-20mm.

[Del_CtrlnoAlt]

Originally Posted by zcf Strange indeed, may be wide angle filter holder connector to the ring holder is too thick? I got not vignetting problem even using the modded Tian Ya filter holder on my Sigma 10-20mm.

tat 1 confirm, since its 10-20mm = 15-30mm only no vignetting at 20-30 using the wideangle as said by Cokin.

perhaps its due to it being a digital lens, then the vignett is prominent, have yet to try using my 17-35 on D7D, but the 17-50 on D7D vignette on 17... strange thou, the 17-35 uses 77mm while the 17-50 uses only 67mm

[TME]

Originally Posted by Del_CtrlnoAlt tat 1 confirm, since its 10-20mm = 15-30mm only no vignetting at 20-30 using the wideangle as said by Cokin. perhaps its due to it being a digital lens, then the vignett is prominent, have yet to try using my 17-35 on D7D, but the 17-50 on D7D vignette on 17... strange thou, the 17-35 uses 77mm while the 17-50 uses only 67mm

Maybe the smaller front element cast a shadow...

[Agetan]

if you are using tripod, why don't try HDR instead. Its free for those who has Photoshop CS and it won't degrade the image like filter will?

Hart