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Jennifer · 03-03-2007, 03:08 AM

Still a newbie, I am trying to figure some thing out. I would like to start experimenting with filters for K100. I have two lenses, Pentax 50-200 and a 18-55. Can I use the 55mm size filters with both lenses? Is there a "filter size for Dummies" way to figue out what filter will fit which lens? Thanks, Jennifer

Mike Cash · 03-03-2007, 03:59 AM

The 50-200 uses a 52mm filter, I believe.

Filter diameter is commonly marked on lenses.

To save yourself some money, you can use economical "step-up" adapter rings to allow you to mount larger sized filters on lenses with smaller filter mount diameters. Sort of the photographic equivalent of stuffing paper into the toe of too-large hand-me-down shoes...except it doesn't make you walk funny.

SupremeMoFo · 03-03-2007, 04:00 AM

It tells you on the front of the lens what filter size they take, it'll say "xx mm ø"

Had a look at Pentax's website - both take 52mm filters

roscot · 03-03-2007, 05:17 AM

Hi Jennifer,
A quick and easy way to determine filter size, is to look on the back of your lens cap. The size should be stamped on the back. In your case both lenses use 52mm filters.

MPrince · 03-03-2007, 06:09 AM

Most of my filters are 58mm, purchased to fit my S*ny H-1.

Most of my pentax lenses have a filter thread diameter of 49mm or 52mm.

So, I have a 49mm-58mm step-up ring and a 52mm-58mm step-up ring that enables me to use my filters on all my lenses.

The only downside is the lens hoods don't fit with the step-up rings in place, but that is a problem that can be managed.

**jfdavis58** · 03-03-2007, 08:56 AM

Consider one of those folding rubber hoods?

-=JoN=- · 03-03-2007, 09:30 AM

where it's usually seen on lenses.
sigma and pentax DA kit lenses shown

Ole · 03-03-2007, 11:20 AM

Originally posted by Jennifer

Still a newbie, I am trying to figure some thing out. I would like to start experimenting with filters for K100. I have two lenses, Pentax 50-200 and a 18-55. Can I use the 55mm size filters with both lenses? Is there a "filter size for Dummies" way to figue out what filter will fit which lens? Thanks, Jennifer

If you're realy going to experient with filters you may want to look at the Cokin filter system:

COKIN Creative System - The Holder System - Standard & Pro Holder

It could be less expensive in the long run than buying lots of srew-in filters, and you'd have access to graduated filters and other fun stuff.

You'd need an adapter ring for 52mm lenses.

roy · 03-03-2007, 12:18 PM

really about all the filters you will probably be using are a UV , which i have on everylens and a polarizer and neutral density filters.
get the last 2 in the largest size you can afford and use step up rings to attach them

Jennifer · 03-03-2007, 09:24 PM

Thanks for all the help! You are the best resource for my photographic questions and needs, whatever would I do without you?

Roy: What is the advantage for getting a bigger size filter? Just curious. thanks!

Jennifer · 03-03-2007, 10:00 PM

Wow, I just looked into the Cokin System, how neat! Now, I just need to decide on what set to get. Thanks for the great info!

03-03-2007, 03:08 AM	#1
Jennifer Inactive Account Join Date: Nov 2006 Location: Atlanta Ga. Posts: 48	Help with Filter size Please! Still a newbie, I am trying to figure some thing out. I would like to start experimenting with filters for K100. I have two lenses, Pentax 50-200 and a 18-55. Can I use the 55mm size filters with both lenses? Is there a "filter size for Dummies" way to figue out what filter will fit which lens? Thanks, Jennifer

03-03-2007, 09:24 PM	#10
Jennifer Inactive Account Join Date: Nov 2006 Location: Atlanta Ga. Posts: 48 Original Poster	Thanks Thanks for all the help! You are the best resource for my photographic questions and needs, whatever would I do without you? Roy: What is the advantage for getting a bigger size filter? Just curious. thanks!

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03-03-2007, 03:59 AM	#2
Mike Cash Veteran Member Join Date: Jan 2007 Location: Japan Photos: Gallery Posts: 6,950	The 50-200 uses a 52mm filter, I believe. Filter diameter is commonly marked on lenses. To save yourself some money, you can use economical "step-up" adapter rings to allow you to mount larger sized filters on lenses with smaller filter mount diameters. Sort of the photographic equivalent of stuffing paper into the toe of too-large hand-me-down shoes...except it doesn't make you walk funny.

03-03-2007, 04:00 AM	#3
SupremeMoFo Veteran Member Join Date: Mar 2007 Location: Queensland, Australia Posts: 668	It tells you on the front of the lens what filter size they take, it'll say "xx mm ø" Had a look at Pentax's website - both take 52mm filters

03-03-2007, 05:17 AM	#4
roscot Veteran Member Join Date: Sep 2006 Location: Virginia Beach VA USA Photos: Gallery Posts: 1,363	Hi Jennifer, A quick and easy way to determine filter size, is to look on the back of your lens cap. The size should be stamped on the back. In your case both lenses use 52mm filters.

03-03-2007, 06:09 AM	#5
MPrince Veteran Member Join Date: Sep 2006 Location: WV Posts: 1,495	Most of my filters are 58mm, purchased to fit my S*ny H-1. Most of my pentax lenses have a filter thread diameter of 49mm or 52mm. So, I have a 49mm-58mm step-up ring and a 52mm-58mm step-up ring that enables me to use my filters on all my lenses. The only downside is the lens hoods don't fit with the step-up rings in place, but that is a problem that can be managed.

03-03-2007, 08:56 AM	#6
jfdavis58 Site Supporter Join Date: Nov 2006 Location: 13 S 0357397-3884316 Photos: Gallery Posts: 887	Consider one of those folding rubber hoods?

03-03-2007, 09:30 AM	#7
-=JoN=- Veteran Member Join Date: Nov 2006 Location: NYC Posts: 999	where it's usually seen on lenses. sigma and pentax DA kit lenses shown

03-03-2007, 11:20 AM	#8
Ole Administrator Join Date: Sep 2006 Location: Copenhagen, Denmark Photos: Gallery \| Albums Posts: 4,409	Originally posted by Jennifer Still a newbie, I am trying to figure some thing out. I would like to start experimenting with filters for K100. I have two lenses, Pentax 50-200 and a 18-55. Can I use the 55mm size filters with both lenses? Is there a "filter size for Dummies" way to figue out what filter will fit which lens? Thanks, Jennifer If you're realy going to experient with filters you may want to look at the Cokin filter system: COKIN Creative System - The Holder System - Standard & Pro Holder It could be less expensive in the long run than buying lots of srew-in filters, and you'd have access to graduated filters and other fun stuff. You'd need an adapter ring for 52mm lenses.

03-03-2007, 12:18 PM	#9
roy Inactive Account Join Date: Sep 2006 Location: D/FW area, Tx. Photos: Gallery Posts: 1,710	really about all the filters you will probably be using are a UV , which i have on everylens and a polarizer and neutral density filters. get the last 2 in the largest size you can afford and use step up rings to attach them

03-03-2007, 10:00 PM	#11
Jennifer Inactive Account Join Date: Nov 2006 Location: Atlanta Ga. Posts: 48 Original Poster	Wow, I just looked into the Cokin System, how neat! Now, I just need to decide on what set to get. Thanks for the great info!

Help with Filter size Please!

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