Quantaray Clear UV Protector = bad photos!
JohnC
Registered Users Posts: 222 Major grins
I bought a Quantaray Clear UV Protector (67mm professional filter series) and didn't know it, but it had like three flaws. There were two spots that look like nicks and one spot that was longer that looked like the coating was messed up.
I bought it at night and didn't check it. I put it on and went out to make night shots. The results were bad.
Is it common to have flaws with this brand? Is there a better brand? I bought two at Wolf Camera and it was $39.99 for the protector and the other polarizer was $79.99 so I expected good quality. :scratch
The two nicks are top left, one in the tree. I also think the UV protector caused the glare to the right. I've taken night shots before and never had any glare before I used this stupid thing. :dunno
Full 10.2mp night shot
That is the unedited picture. I know it sucks compared to what you all shoot, but I'm still learning; it's my first DSLR ever.
I bought it at night and didn't check it. I put it on and went out to make night shots. The results were bad.
Is it common to have flaws with this brand? Is there a better brand? I bought two at Wolf Camera and it was $39.99 for the protector and the other polarizer was $79.99 so I expected good quality. :scratch
The two nicks are top left, one in the tree. I also think the UV protector caused the glare to the right. I've taken night shots before and never had any glare before I used this stupid thing. :dunno
Full 10.2mp night shot
That is the unedited picture. I know it sucks compared to what you all shoot, but I'm still learning; it's my first DSLR ever.
Nikon D300 l Nikon SB-600 l Nikon MC-30 Remote l Nikon AF-S 24-85mm 1:3.5-4.5G IF-ED l Nikon 50mm f/1.8 AF-D l Sigma 10-20mm F4-5.6 EX DC HSM l Quantaray Pro U-100 backpack by Naneu Pro l Quantaray QSX 9500 Tripod by Sunpak
Canon AE-1 Program l FD 28mm 1:2.8 l FD 50mm 1:1.8 l Sunpak Auto 821 Dedicated
Canon AE-1 Program l FD 28mm 1:2.8 l FD 50mm 1:1.8 l Sunpak Auto 821 Dedicated
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My guess is that these are a combination of lens flare, dirt/imperfections on the filter, and shooting straight into so many lights.
Most people who shoot at night do not put anything between them and the lens to reduce this effect. Not really all that uncommon, especially when the light is coming right at you.
Any other comments?
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I was told that Quantaray are made by Hoya for Ritz/Wolf Camera... Hoya is a respected brand...
True, but there are major differences between their lower end filters and their higher end filters, especially regarding internal reflections. I never use filters at night, unless I'm shooting at the beach
I recommend B+W or Heliopan filters, including UV/Skylight. They cost slightly more but are worth it. Also, you will notice a huge difference in multi coated products for digital cameras.
I use only B+W UV on my lenses, and agree with LuckyBob...take them off at night...Even with my B+W, I get oddball reflections and flairs occasionally (though not this bad)
The two knicks on the lens made the wierd spot in the tree (top left) and sky. There was a smudge spot that is a coating flaw, too. I didn't touch the glass at all. When I got home I did inspect it to make sure it wasn't dirt, etc., and there was none; just the coating flaws.
As far as the light reflection, this protector is their "professional series" specificall for DSLR's that was $39.99 and $79.99 v/s the same brand non-pro they had for $12-$14. I expected this UV protector to work, not glare when light shined at it, or have knicks and flaws in the coatings. :confused
When I get back from work, I will make a picture of the lens so you can see what I'm talking about.
Back ro work.....
Canon AE-1 Program l FD 28mm 1:2.8 l FD 50mm 1:1.8 l Sunpak Auto 821 Dedicated
I couldn't get a angle to show the smudge near the edge that looks like a coating flaw. The other two pics are the the polarizers in the box.
Pic1
Pic2
Pic3
Canon AE-1 Program l FD 28mm 1:2.8 l FD 50mm 1:1.8 l Sunpak Auto 821 Dedicated
I don't doubt that the filter you got has flaws (and that you should exchange it), but they may or may not be the cause of the flares in an image. Specks of dirt and other flaws in/on the lens will show up but the degree which they affect the image varies.
Small, nonreflective objects in/on the lens are so far away from the focal plane that they usually cause minor changes in exposure or color for that area, but nothing much else. Scratches in the glass can (and sure do) pick up light and reflect it back into the lens, especially on longer exposures, as you've found in the sky. The more I look at those two flaws, I'm inclined to agree that they're nicks in the glass. I'd grab a bright flashlight and shine it across the filter and see if it picks up the light; at least it'd give you ammunition for exchanging it
As far as internal reflections, think of it this way: any piece of glass you put between your sensor and the subject is going to degrade the quality in some way or another. Canon charges an arm and a leg for lenses with better optical transmission, leading to better colors and contrast. Also, glass (read: filters) reflects *some* light to one degree or another. If they didn't, we wouldn't have any glare issues with our ordinary household windows. Those minor reflection issues that even mid-range filters have tried to sort out are still going to rear their head every once in a while, especially on longer exposures. I figgure go the safe route and remove as many possible problems on night exposures - I'm just extra-careful with my lenses.
I'm kind of surprised that the filter got through QA with the nicks, although the uneven coating doesn't really surprise me. Even though Quantaray is (supposedly) built by Hoya, they're either building them to a price or not giving you Hoya's full filter range. Hoya's own "pro" (S-HMC) UV filter is ~$70, and their polarizer (S-HMC) is ~$160.
Hoya also isn't considered to be top of the range when it comes to filters, and my own experience has confirmed this. In particular, I've shot with Hoya's bottom of the line circular polarizer which is in line price wise (~$75) with Quantaray's "pro" filter, and finally stepped up to a B+W Kaeseman circular polarizer ($175). Night and day difference. Much better contrast and *much* more saturated colors, plus much less color shift throughout the range of polarization; the Hoya almost seems to turn things yellow when the polarization effect kicks in comparison. Not to mention the build quality puts the Hoya to shame.
Just my two cents
I suppose if I want anything to work worth a crap - I need to ante up the big bucks. :cry
I'll take back the clear UV one and keep the other that has no flaws. My next purchase will be your rec'd brand, B+W K.
Canon AE-1 Program l FD 28mm 1:2.8 l FD 50mm 1:1.8 l Sunpak Auto 821 Dedicated
I have another photo I'll post later so you can see the capitol in the baclgroud.
Canon AE-1 Program l FD 28mm 1:2.8 l FD 50mm 1:1.8 l Sunpak Auto 821 Dedicated
In the summer I'll get better shots because they have two fountains that are lit, all the lights working, etc. I'm sure the grass and flowers will help, too.
Canon AE-1 Program l FD 28mm 1:2.8 l FD 50mm 1:1.8 l Sunpak Auto 821 Dedicated
For filters the best are generally considered Heliopan->B+W->Hoya in that order. You always want the multicoated (Pro-1, MRC, etc)--and I'll bet the Quantarays are not. If you are going to put another layer of glass in front of your expensive lens, don't cheap out.
Now for the kicker, if you wnat B+W (preferred) or Hoya, you can go to www.maxsaver.net and get them for nearly half the price you will see anywhere else. That is where I buy my B+W filters (77mm UV MRC for about $50, KSM CPL about $122).
http://www.chrislaudermilkphoto.com/
Very true, I get green spots with my B&W MRC UV Filter shooting night
scenes. Especialy when doing long exposures. When I take the filter off
the problem goes away.
― Edward Weston
In my signature is one of my favourite quotes (by John Ruskin). I live by this advice.
My advice is to inspect the lens before you buy it!
Canon AE-1 Program l FD 28mm 1:2.8 l FD 50mm 1:1.8 l Sunpak Auto 821 Dedicated
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Good advice. In this case the more expensive B+W is indeed a better product than the Quantaray. However, I do not just go spend $80 on the first vendor I find--I did some homework and spent about 60% of that--down near where the junk filters are priced. It's all about doing a little research before putting money on the counter--I always research my options to death before actually buying anything (deep into reseach again on redecorating right now).
http://www.chrislaudermilkphoto.com/
Yeah, and he "checked" this one over.
Canon AE-1 Program l FD 28mm 1:2.8 l FD 50mm 1:1.8 l Sunpak Auto 821 Dedicated