At 10:41 AM -0700 5/15/01, Icoz, Evrim wrote:
>I am seriously considering getting filters (77mm) for my Tokina lenses
>(19-35 and 28-80mm's). I am loking into a circular polarizer and also some
>red, green and yellow filters for B&W. It seems to me that getting a system
>like Cokin will save me money when I buy more than one filter.
I use the Cokin P system with my Canon EOS-3 system with EF50mm f1.4
(filter diameter 58mm), 75-300 mm IS (filter 58mm), and older Sigma
wideangle 24-70mm (filter 55mm). I also have a RB 67 with Mamiya Secor 90mm
(filter 77mm).
I use the P-system for the shots where I want a graduated neutral density
filter (GND) as well as for some B&W shots. I'm fairly happy with the P
system, here are my thoughts:
Pros:
* Economical in that you only ever have to buy one set of filters
* The only way to adjust graduated neutral density filters for off-center
horizons
* The only way to stack filters (not recommended)
Cons:
* Bulky, you don't really leave the P-system on, but only put it on for
special effects
* You have to take off your Canon hood, the P-system hood is inadequate for
blocking flare, so you need to use a tripod and a handheld gobo if you're
worried about that
* The cheap resin filters are cheap for a reason. They're not perfectly
optically
clear and the cheap Cokin GND and ND filters aren't perfectly grey. Buy
glass
P-filters if you have the money
* They will vignette, even at 24mm. You can dremel or cut off the first two
holders on the P-mount (it's cheap, buy a second one), but I imagine it'll
still vignette at 19mm.
> Also, are they good quality that I can use with a L glass ?
Only if you buy quality glass filters from someplace like Singh-Ray. The
standard Cokin resin filters will slightly reduce clarity. If you're rich
enough to buy an L lens, then get glass filters. I'm cheap so I suffer with
resin and for all purposes, at 25% of the price they do 90% of the job.
>Does it make sense to buy the polarizer seperately, btw?
The polarizer is expensive. You could buy a large diameter polarizer and
just use step-up rings for your smaller lenses. It might be more economical
in the long run.
>Another thing that worries me is vignetting, 19-35 especially. What do you
>think? Do these system vignette a lot?
See above.
Karen
*
****
*******
***********************************************************
* For list instructions, including unsubscribe, see:
* http://www.a1.nl/phomepag/markerink/eos_list.htm
***********************************************************
