Filters, what are the uses of filter?
Today's filter uses are quiet different from the old film days. the film was sensitive to UV, hence people uses UV filter for their film camera. Today, filters are commonly used to protect your lens. Filter are something i always advise my friend who buys a new lens, to buy filter together, since you have just brought a lens, surely you can haggle more with the shop for the filter. or haggle for free filter~ (that way, you dont have to come to lowyat.net a week later and ask where or which filter is best to get.... or skim on finding the cheapest filter in penang when u stay at johor...and get back fired. sorry for my sarcasm.)
Digital sensor today will not benefit what-so-ever from an UV filter, because today's Digital Camera comes with a Low Pass (Anti Aliasing) filter, that have UV and IR filtering behavior so that the digital sensor wont pick up any UV/IR spectrum/color. So its noticeable that, china made/imitation/cheap filter would simply print "UV" filter and market it as its use for filtering UV. oppose to Branded filter who spend money in research a proper coating, will sell their filter as Multi Coating *MC filters (which will have UV coating to protect ur eye from seeing through the OVF. some will brand it as UV-MC.) to Enhance the color for digital sensor pickup, and reduction of color aberration, Flare and Ghosting effect
*add-on, was told that UV filter will reduce CA in photo, confirmed, but, higher end camera (crop flagship and FF series) has built in "CA" reduction in the AI-CHIP (digic/expeed/bionz) base on their original lens profile.
Now, Why do we need a Filter?
to me, my answer is simple, i shoot in a dirty environment, dust, oil, water, wine, ice cream gets on my lens, then i would use any available cloth and wipe it. (i bet u wont use lenspen to wipe icecream off the lens!) so, i would risking getting my expensive lens first/front optic/element to scratches!. so what happens is, i get a filter, put it in front, if it get dirty, just wipe it, if it get scratch badly, i just change a new filter, anyway, the filter is around fraction of the lens price. so basically it prevent risking your lens's optic from scratch during cleaning/wiping.
it is cheaper to replace a filter then to replace a lens.
so, if you are the careless, or working in environment that dirt/moist get to ur lens often, get a filter so you can just wipe it off without worry you would damage the lens's coating.
*was told canon L lens require a filter to complete the Weather Sealing, need confirmation on this.
so, What are the differences between the price range the filters offer?
filter can range from rm30, to rm500+
each penny spend on them, is each penny of quality. although this said, be really careful and do some research on the filters before you become a victim of Conned by the shop, how they mark up a china filter to rm450*. *will add a price list bottom of this post.
like i mention that i wipe my filter with any cloth available, a rm50 filter get scratch easily, and i would need to replace it one years later when it get badly scratch, so 5 years, 5 filter, 5 x rm50 = rm250. the scratch might not be physical glass scratch, it would be coating (i wonder rm50 filter really has any coating or not, or just glass?) being reduce*
so i buy only good quality branded one, those with claims of very tough scratch resistant, and after 3 years of using, hardly any scratch.
another thing is, people like to go to the beach and shoot, or islands, the sea water will corrode
"eat"(please help me get a better word)
the coating due to the acidic or somethingdifference between filter offer by the same brand? why with so many different pricing?
Some brand will release several 'model/series' of their filter, mainly to widen their market. let learn to see the few main difference on those filter
for example, a major brand, the B+W, has a cheaper F-Pro series, then the slightly more expensive XS-PRO (XS as Xtra Slim).... the XS-Pro CPL series is really scary slim and be used with UWA (which i dont get it since UWA doesnt work well with CPL in first place, missed-marketing?) but the MRC filters will work perfectly UWA
This is very important, do not end up buying a filter and realize it do not fit your lens when you got home. You can check the size of your lens filter thread from the lens itself, look for the Ø
logo. Ø55 means 55mm, Ø67 means 67mm. Get the right filter size thread for your lens.
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the common one are the 4-5mm thickness ring, which has double thread, which mean, u can screw one another filter in front of it.
then there is the 2.5-3mm thickness ring, which either has single thread or double thread, which are slimmer, and mainly use for ultra wide angle lens to prevent vignetting. and these slim filter are usually more expensive (no idea why when less material is used)
so if its for a tele-lens, the normal 4-5mm filter will do, because it will not cause vignetting on tele lenses.Price Listing
, the pricelist mostly are taken from shashinki or yamiya (average pricing, not the cheapest). some people may lower offer somewhere else, but the price listed here will be the average, so if you get price ranging 'near' it, just get it, because even the shop has rental to pay, a family to feed.
B+W F-Pro 62mm=RM223
B+W XS-Pro 62mm=RM268
Hoya Pro1 62mm=RM158
Hoya HD 62mm=RM208
, 77mmCPL= RM378
KenkoThis post has been edited by ieR: Dec 19 2014, 10:33 PM