Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-21-2015, 10:49 PM   #1
Loyal Site Supporter
gordon_l34's Avatar

Join Date: Sep 2008
Location: Brisbane, Australia
Photos: Gallery | Albums
Posts: 507
40.5mm Filters

Hi,

I have just acquired a collection of photography equipment from a deceased estate.
Amongst the filters are three of 40.5 mm diameter filters.
Can anyone tell me what they are for?

PS. I hope this post is in the correct topic.

Regards.

02-22-2015, 01:17 AM   #2
Pentaxian
Rimfiredude's Avatar

Join Date: Oct 2014
Location: Washington
Photos: Gallery
Posts: 2,177
Q lenses are 40.5
02-22-2015, 09:33 AM   #3
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 27,438
40.5 mm is common for rangefinder camera lenses (Leica, vintage Contax/Kiev, Nikon S). I have several lenses that take that size filter. Be aware that the thread pitch may be different than current standard, depending on the origin and age of the filters.


Steve
02-22-2015, 10:01 AM   #4
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 43,128
QuoteOriginally posted by gordon_l34 Quote
Hi,

I have just acquired a collection of photography equipment from a deceased estate.
Amongst the filters are three of 40.5 mm diameter filters.
Can anyone tell me what they are for?

PS. I hope this post is in the correct topic.

Regards.
Those filters are also commonly used on lenses with rear-mounted drop-in filters, such as the FA* 300mm F2.8, other K mount telephotos, and various medium format lenses.


Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

02-22-2015, 10:26 AM   #5
Site Supporter
mikeSF's Avatar

Join Date: Jan 2009
Location: East Bay Area, CA
Photos: Gallery
Posts: 5,705
i use them for my 25mm


[random image found on the web]
02-22-2015, 04:37 PM   #6
Loyal Site Supporter
gordon_l34's Avatar

Join Date: Sep 2008
Location: Brisbane, Australia
Photos: Gallery | Albums
Posts: 507
Original Poster
Hi,
Thanks for that.
Regards.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
filters
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Source for 40.5mm filters for 25mm f4 DA lens Ed Hurst Pentax Medium Format 24 04-03-2015 10:35 AM
For Sale - Sold: Filters - 37mm 40.5mm 46mm larrywomack Sold Items 9 03-25-2014 11:40 AM
Recommend a 40.5mm 9- or 10-stop ND filter?? mikeSF Pentax Camera and Field Accessories 12 05-25-2013 06:30 PM
40.5mm hood for Q i_trax Pentax Q 10 01-24-2012 09:10 PM



All times are GMT -7. The time now is 06:19 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top