Go Back   Steve's Digicams Forums > Digicam Help > Newbie Help

Reply
 
Thread Tools Search this Thread
Old Mar 7, 2008, 10:38 PM   #1
Junior Member
 
Join Date: Mar 2008
Posts: 5
Default

Hello all!
I'm new on this forum and I would like to make a "newbie" question, here it goes:
After having some classes about photography, I've decided to buy for my camera (Canon PowerShot G7) a Polarizer filter by Hama, its diameter is 49mm (?). And what I would like to know is, which adapter should I buy to use this filter?
thank you
melgashop is offline   Reply With Quote
Sponsored Links
Old Mar 8, 2008, 8:18 PM   #2
Senior Member
 
Join Date: Jun 2005
Posts: 804
Default

melgashop, any specific reason (besides price) that you want to get a 49mm filter?

Here's something from Lensmateonline, which makes a 58mm filter adapter for the G7:

1.Why isn't there a Lensmate 52mm adapter for the G9/G7?
Due to the design of the G9/G7s zoom lens, it retracts about 15mm when zoomed back to the wide setting from the full telephoto setting. Because the lens is recessed so far in the adapter tube at the wide setting, vignetting occurs with a 52mm diameter adapter with even a single filter. Though vignetting is very slight, a 52mm adapter would have very limited usefulness on the G9/G7, so we elected not to make one.


If what they say about vignetting is correct, then vignetting would be an even more serious problem using a 49mm filter.

The adapter that Canon makes (LA-DC58H) is available here.....

http://www.newworldvideodirect.com/p...FQQilwod4G8F9Q

......for $15.00. It also uses 58mm filters, so there's probably something to the above-mentioned vignetting issue. A 58mm filter is going to be more expensive than a 49mm would be, but at least it would let you shoot at wider angles without the adapter and filter interfering with the edges of the frame.

Grant
granthagen is offline   Reply With Quote
Old Mar 8, 2008, 9:27 PM   #3
Junior Member
 
Join Date: Mar 2008
Posts: 5
Default

thanks for the tip, Grant. Actually I didn't make a big search about this stuff, all I wanted was a polarizer filter and I found this one at a reasonable price. Anyway, I'll try to sell it and get a bigger one. Thanks for the tip!
Regards,
Jorge
melgashop is offline   Reply With Quote
Old Apr 27, 2008, 5:59 PM   #4
Junior Member
 
Join Date: Mar 2008
Posts: 5
Default

Just one more question........does it matter if I buy a filter bigger than 58mm? Thanks in advance
melgashop is offline   Reply With Quote
Old Apr 27, 2008, 6:48 PM   #5
Senior Member
 
Join Date: Jun 2005
Posts: 804
Default

I doubt it.

If you get the standard 58mm adapter, you would need to use a step-up ring to match the adapter's 58mm threads to the filter's larger diameter threads. As long as the step-up ring is no thicker than the average filter ring, there shouldn't be any increased chance of vignetting.

Grant
granthagen is offline   Reply With Quote
Old Apr 27, 2008, 7:17 PM   #6
Junior Member
 
Join Date: Mar 2008
Posts: 5
Default

Many thanks, Grant. Actually, I'm thinking about getting a bigger filter so I won't need to buy new ones if I get a new camera, that's why I've made that question. Thanks!
melgashop is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 3:36 AM.