CPL Lens

[genesisinexcellence]

Good Day people,

I am thinking of buying a CPL Hoya Lens (52mm) but when I went into the website to check it out I realise there are not just one grade but many other grades like Standard, Mulcoated (HMC), Super HMC and DMC. I've got 3 questions:

1. What is the difference between these grades?

2. Does it make a difference in the shots?

3. How much roughly is the cost?

[derickuan]

First off, it's a filter...not lens.

1. What is the difference between these grades?

I may not be correct but the difference is basically in the coatings on the filter.

2. Does it make a difference in the shots?

Yes. More special coatings would mean better image quality as it reduces flares and chromatic abberation - pls do correct me if i'm wrong.

3. How much roughly is the cost?

Standards should be less than RM100.....as for me, I have the SHMC 67mm C-PL which cost around RM250 but that was 2 years ago...

[leslie]

good ones B&W can cost up to RM4-500.....there are other brands which cost up to RM1k :rolleyes: ...German brands.

[ShaolinTiger]

I'd spend the extra and get a B+W :)

Or at least get Pro1D Hoya series.

[Crazymalaysian]

As a reduction in light reaching your sensor is inevitable, you'll find a 3-5 stop difference with cheaper filters and 1-2 with good expensive ones.

[ckchowov]

I have one RM90 punya CPL...3-stops difference...like a ND...hehe...

[genesisinexcellence]

WHat do you mean by 3 stop difference and what is 'ND'?? :?

[calvaryzone]

ckchowov, what brand is your CPL? so cheap. i wanna buy also. let me know so i can hunt for it.

genesisinexcellence, ND = Neutral density filter
http://en.wikipedia.org/wiki/Neutral_density_filter

CPLs will reduce the f/stop of your aperture (filters out light to sensors, so darker lo :D), so you can't shoot at what the lens can without CPL. cheaper CPLs are lower quality, so cheaper coating, so the lens suffers more. :P

[Crazymalaysian]

WHat do you mean by 3 stop difference and what is 'ND'?? :?

It reduces the amount of light reaching your sensor by a factor of 3. For example, if a scene was metered at f/2.8, 1/200 seconds, adding the CPL would cause your camera to compensate by setting a 1/25 second exposure. An ND filter does just that, reduce the amount of light coming through so you can use a slower shutter speed.

[ckchowov]

ckchowov, what brand is your CPL? so cheap. i wanna buy also. let me know so i can hunt for it.


Hoya 55mm.

[dinduboy14]

It reduces the amount of light reaching your sensor by a factor of 3. For example, if a scene was metered at f/2.8, 1/200 seconds, adding the CPL would cause your camera to compensate by setting a 1/25 second exposure. An ND filter does just that, reduce the amount of light coming through so you can use a slower shutter speed.

Are ND filters still useful in digital photography now that in post processing you can make the necessary exposure changes? :?

[braendan]

Are ND filters still useful in digital photography now that in post processing you can make the necessary exposure changes? :?

ND filters were not meant to correct underexpose or overexpose images like what you do in image processing. ND filters increases your f stops enabling you to keep you shutter open for a longer period of time. This is useful for creating a smooth effects on motion e.g. water movements.