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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 24 Feb 2008 (Sunday) 12:19
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Lens Filter Advice....Cokin?

 
djglenn1337
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Feb 24, 2008 12:19 |  #1

Hello,

I currently have a Canon 400D (Xti) with a 18-55mm IS, Tammy 55-200mm & 430EX, Tripod, etc.

I am looking at the prospect of purchasing new lens', in particular the 60mm 2.8 Macro and the new 55-250mm IS, (choices change daily... :o)

However, I would also like to consider filter options before buying a particular lens. Do the Cokin kits work on lens' with rotating focus rings? like the kit lens for example?

Is it simple to adopt a single kit for different thread sizes? rather than buying individual circular filters...

any advice / guidance would be welcome..


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argyle
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Feb 24, 2008 12:30 |  #2

djglenn1337 wrote in post #4984372 (external link)
Hello,

I currently have a Canon 400D (Xti) with a 18-55mm IS, Tammy 55-200mm & 430EX, Tripod, etc.

I am looking at the prospect of purchasing new lens', in particular the 60mm 2.8 Macro and the new 55-250mm IS, (choices change daily... :o)

However, I would also like to consider filter options before buying a particular lens. Do the Cokin kits work on lens' with rotating focus rings? like the kit lens for example?

Is it simple to adopt a single kit for different thread sizes? rather than buying individual circular filters...

any advice / guidance would be welcome..

1.) Filters that don't need to rotate (UV, ND for example) will work fine on a lens that rotates as it focuses. No problem there. Filters that need to rotate (CPL) will need to be adjusted after the lens has focused. If you adjust it before, you won't get the desired effect after the lens has focused.

2.) You can buy a filter for your largest lens diameter and use a step-up ring on your smaller diameter lens. This will let you share filters between lenses. However, if you're using a wide angle lens, the step ring *may* cause vignetting issues (maybe not on a crop camera...can't say for sure).

PS If you're going to use filters, be sure to get a good multicoated filter (B+W, Hoya, Heliopan). A poor filter will degrade the image and you won't be happy. Refer to the Protective Filter FAQ at the top of this forum...lots of good info.


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djglenn1337
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Feb 24, 2008 13:02 as a reply to  @ argyle's post |  #3

Great! I some how was always under the impression a rotating focus meant these type of systems were unavailable...

I assume that the only way to get detail in the sky, whilst maintaing the subject detail is by using a nd filter / GND?


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Perry ­ Ge
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Feb 24, 2008 14:25 |  #4

Yes, GND is what you want. Having said that, Cokin's GNDs are crap and leave a weird colour cast.


Perry | www.perryge.com (external link) | flickr (external link) | C&C always welcome | Market Feedback & Gear | Sharpening sticky | Perspective sticky

  
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argyle
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Feb 24, 2008 14:28 as a reply to  @ Perry Ge's post |  #5

And a note to my previous post...if you're using a step-up ring with your circular filters, there's also a good chance that you will not be able to use your lens hood at the same time. Just something to be aware of.


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djglenn1337
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Feb 24, 2008 15:16 |  #6

perryge wrote in post #4985105 (external link)
Yes, GND is what you want. Having said that, Cokin's GNDs are crap and leave a weird colour cast.

Good to know...which ones are good?

Also, I assume if I take a picture in RAW, and the sky is white and overexposed, I cannot recover the detail in Photoshop?


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Canon 550D, Σ10-20mm, 18-55mm IS, Σ17-50mm 2.8 OS, 55-250mm IS, 60mm 2.8 Macro, 430EX II & Battery Grip

  
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T.Hogan
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Feb 24, 2008 15:21 |  #7

dj, I just recieved the Heliopan GND 0.6 . Its a bit pricey but in the long run, it is worth it.


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Madweasel
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Feb 24, 2008 15:34 |  #8

djglenn1337 wrote in post #4985366 (external link)
I assume if I take a picture in RAW, and the sky is white and overexposed, I cannot recover the detail in Photoshop?

Correct. Once everything goes to white, there's no detail there.


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Lens Filter Advice....Cokin?
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