sigma 10-20mm, great lens, good price but...

Rob200sx · 4 Jul 2008 at 08:26

£48 for a Polarizer because it's a 77mm thread?

meh!

steveo · 4 Jul 2008 at 08:58

Rob200sx said:
£48 for a Polarizer because it's a 77mm thread?

meh!

hell thats cheap as chips for a 77mm thread

Hoya PRO 1 Digital Circular PL 77mm £134.99
B+W Kaesemann Ultimate Digital Polarizing Filter 77mm £146.99 :eek:

edit looking around that has to be a misprint on the prices

martinturner · 4 Jul 2008 at 09:01

Try one first, my one (for 10-20) tends to vignette the top corners on a sunny day, so does not give me what I want. I tend to not bother and apply an adjustment graduated layer in PS afer which darkens the sky just as well.

Mr Jones · 4 Jul 2008 at 09:51

martinturner said:
I tend to not bother and apply an adjustment graduated layer in PS afer which darkens the sky just as well.

King4aDay · 4 Jul 2008 at 10:11

Yeah CPLs on the 10-20 (and I assume other super-wides) aren't great because the are of polarisatin isn't large enough to fully cover the sky in landscape orientation, meaning that you get an uneven effect, which frankly looks pants IMO.

Still use mine sometimes though for cutting out reflections.

Littlenose · 4 Jul 2008 at 19:01

King4aDay said:
Still use mine sometimes though for cutting out reflections.

can be great for woodland (foilage) shots too... but i guess this is a subheading of reflections (as that's all it does, cuts out refections off waxy foilage)

ok, i'll shut up again

gadgets · 4 Jul 2008 at 20:04

martinturner said:
Try one first, my one (for 10-20) tends to vignette the top corners on a sunny day, so does not give me what I want. I tend to not bother and apply an adjustment graduated layer in PS afer which darkens the sky just as well.

that's why i bought a slim one

krisboats · 5 Jul 2008 at 02:51

What about a cokin based circular polariser system?

I was thinking of doing that so i could use it on my 55-250mm as well. No idea what the usability and quality is like though,

gadgets · 5 Jul 2008 at 10:47

get a proper screw on one, cokin is ok for grad filters and the like

D.P. · 8 Jul 2008 at 10:33

I wouldn't use a Polariser on a super wide angle lens, because of the FOV you'll get very odd polarization patterns.

Messiah Khan · 8 Jul 2008 at 11:01

D.P. said:
I wouldn't use a Polariser on a super wide angle lens, because of the FOV you'll get very odd polarization patterns.

As DP says, the reason why you get strange effects on ultra wide lenses when using polarisers is because the field of view being so great that the angle of light varies so much. Polarisers only polarise light waves coming in a certain direction, but if the lens is covering a huge fov, then the light is coming from a hole range of angles. Basically there is no way round it.

Oh and I use a "B+W Kaesemann Ultimate Digital Polarizing Filter 77mm"
and it can be had for a lot less than £146.99.

(Still not cheap mind)

D.P. · 8 Jul 2008 at 12:40

The other thing to bear in mind is that 77mm is now the standard diameter for pro glass in the usual zoom ranges. So it is is a worthwhile investment if you do buy one to buy a good one.

mrk · 8 Jul 2008 at 12:58

I use a normal Hoya HMC 77MM UV on my 17-55 and have no issues, you don't "need" to have the Pro1D do you ?

gadgets · 8 Jul 2008 at 22:41

D.P. said:
The other thing to bear in mind is that 77mm is now the standard diameter for pro glass in the usual zoom ranges. So it is is a worthwhile investment if you do buy one to buy a good one.

yep my 70-200 vr is 77mm, took it to Le Mans with a 1.7tc it is a sweet lens, when you start waving that thing around people stop and look!