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donnyyeo
06-16-2007, 05:16 PM
Anyone here uses a B+W 010 UV-Haze x1 MRC filter?

The photo below shows the fluorescent (daylight temperature) light’s reflection on two filters.

(old - incorrect white balanced photo)
http://img340.imageshack.us/img340/3851/bw010uvhazemrcfluorescewg9.jpg

Could you identify which filter is the B+W filter? (left or right)

(please read the update below this line)

-----------------------------------------------------------------------------------------------

Updated: New WhiBal white balanced picture below. The previous shot was incorrectly taken due to Auto White Balance setting. Please refer to the shot below for more accurate color.

(new - correct WhiBal white balanced photo)

http://img517.imageshack.us/img517/8854/bw010uvhazemrcfluoresceoh5.jpg

The right reflection is more accurate now. Previously, it looks almost white. Now, it looks more magenta.

However, the left one is less accurate now. The green is actually more saturated like in the old photo.

Could you identify which filter is the B+W filter? (left or right)

donnyyeo
06-17-2007, 03:27 PM
Updated: Here is how I did the test. A black cloth was placed under the filters. The camera's white balance was set using a WhiBal White Balance Reference Card.

http://img440.imageshack.us/img440/1923/testsetupfilterreflectiiq8.gif

The optimum angle is 30 degrees. At extreme angles ( > 80 degrees), both reflection will turn white.

Crazymalaysian
06-17-2007, 09:10 PM
Arent haze filters slightly yellow tinted?

donnyyeo
07-01-2007, 01:06 PM
Source: http://www.acecam.com/magazine/filters-faq.html
Modern UV filters, in the strict sense, are clear, i.e. colorless filters. Additives to the glass absorb the unwanted UV light. On the filter ring, they are labeled UV, 0, Haze or L-39. They do not absorb any visible light, and they can therefore be kept on the lens in all situations where no other filter is needed, as they do protect the front lens to some extent.

Color photographers sometimes use UV filters which have a faint pink tinge and are for 'warming' an image with too much blue, as during a overcast day. These are skylight filters (1A or 1B) or correction filters in the 81 series (81A to F). Skylight filters block UV nearly as well as real UV filters do, though they do not cut it off quite as abruptly, and can be used in B/W work too.

Falcone
07-01-2007, 05:49 PM
Just wondering are yours Alloy version?

Cause recently someone selling the alloy version but I've check around and found out B+W are made of brass?

Then I found this on goole which got me into thinking
http://photography-on-the.net/forum/showthread.php?t=336187

donnyyeo
07-22-2007, 11:01 PM
I have both the brass and alloy version.

Could you guess which is the brass and alloy version depending on the relection's color? (see 1st post)
Yeah, both reflections are from B+W filters.

Fyi, I got them from the same shop in KL. (which shall remain anonymous)
Both were sold at the same price each (RM280).
I bought them about a month apart...so, I did not notice the differences until later (when I clean them)
Btw, they only sell B+W UV filters. They do not sell B+W CPL.

easyihzy
07-26-2007, 01:07 PM
any idea on when you're telling the result of which one is the brass one and the alloy one?

donnyyeo
07-30-2007, 01:31 AM
The green one is brass.
The purple/magenta is aluminium.

However, this is my case only. There is no correlation with the reflection's color and the ring's material.

Unfortunately...
My question on which relection's color corresponds to a MRC filter remains unanswered.
Green = MRC ?
Purple/Magenta = MRC ?

karheng
08-02-2007, 11:40 AM
why don't you just tell us? Too technical for most of us i think....

Technically, shouldn't the UV filter be cutting off UV light - as in the ultra VIOLET rays? Hmmmm

noordin
08-02-2007, 11:48 AM
The right one. :0

twsttl
09-26-2007, 12:47 AM
Just did a comparison with the new bought B+W MRC UV 010 Brass and Hoya Super HMC Pro1 UV(0).:D

1st photo shot on a black cloth and shown that the B+W shown only a very little of purple reflective and the Hoya Super HMC Pro1 shown only a very little of blue/ green reflective.:)
6533

2nd photo- Hoya Super HMC Pro1 with hand- held.:)
6534

3rd photo- B+W MRC UV 010 Brass with.:)
6535

ShaolinTiger
09-26-2007, 12:56 AM
B+W looks slightly warmer colour in this case.

twsttl
09-29-2007, 02:08 PM
Agreed with you, ST.:):):)

tienseven
09-29-2007, 11:53 PM
which is a better choice than??

:redface:

kiankheong
06-19-2008, 11:05 PM
Actually, I won't bother about the reflection. What is more important is the quality of light that passes through the filter.

Coatings help to resolve light that is dispersed due to dispersion through a dense object (lens). Always best to get multi-coated filters/lenses.

:)

doubliewkay
06-19-2008, 11:57 PM
Saw this thread, and i thought i might as well do some testing.

Only have a ultra wide lens at the moment, so did a lot of cropping and noise level also high.

Will do more testing when i get back my 17-40mm.

From bottom to top:
B+W MRC UV-Haze 010M Brass
Hoya Super HMC PRO1 UV(0)
Cheapo filter - RM30

gr2k
06-26-2008, 12:17 PM
i got curious and tested out for myself...i don't know bout reflections but the actual shooting results don't seem to make much difference..

here's the original uneditted picture:
23905

there isn't much significant/relevant difference...even after i've boosted the contrast to the max, only then can you see a slight difference with the filter its warmer
23906

p.s. guess what filter was used in the two images above then?

edit: i was using el-cheapo Visico UV Multicoated (RM 40 shipped off e-bay)