Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
04-14-2011, 03:20 PM   #1
Senior Member




Join Date: Oct 2010
Posts: 115
So I need a 47mm lens hood to fit my 50mm lens?

I was confused about this, I bought one for my 55mm kit lens, and its "52mm" on the side of the hood,

so before I order one for my 50mm lens It must be size 47mm (lens hood)?

thanks

04-14-2011, 03:27 PM   #2
Site Supporter
John Araki's Avatar

Join Date: Jul 2008
Location: Makawao, HI
Photos: Gallery
Posts: 194
No. The 50 mm lens is smaller bore, so it's not -3. it's actually -1. You'd need a size 49mm.

Confusing, but you'll get it.

(Just Kidding)

===

(for real) I think you mean "filter thread" - it is different for most all lenses, but I believe all the 50mm's use a 49mm filter thread.

What model 50 is it?

take a look on the right side of the hood - that "0" w/ the slash through it symbol will tell you what filter thread you need.
04-14-2011, 03:29 PM   #3
Senior Member




Join Date: Oct 2010
Posts: 115
Original Poster
thanks for the fast reply, its the smc Pentax-A 1:2 50mm
04-14-2011, 03:31 PM   #4
Site Supporter
John Araki's Avatar

Join Date: Jul 2008
Location: Makawao, HI
Photos: Gallery
Posts: 194
according to pentax forums SMC Pentax-A 50mm F2 Reviews - Pentax Lens Reviews & Pentax Lens Database
it is also the 49mm filter thread.

04-14-2011, 03:32 PM   #5
Pentaxian
mikeSF's Avatar

Join Date: Jan 2009
Location: East Bay Area, CA
Photos: Gallery
Posts: 5,523
no, dont do that.

what does it say on the ring of your lens? we can help you find the correct hood for that lens.
04-14-2011, 04:12 PM   #6
Senior Member




Join Date: Oct 2010
Posts: 115
Original Poster
well, its the same exact lens as the photo .

on the lens? it dosent say anything...

just around the 50mm pentax-A
04-14-2011, 05:36 PM   #7
Veteran Member
RioRico's Avatar

Join Date: Jun 2008
Location: Limbo, California
Posts: 11,264
That slashed-zero is theta for thread diameter, AKA filter size. Many many many Takumar and M- and A-series Pentax lenses have 49mm front threads. Not all 50's do -- the (K)50/1.2 uses 52mm, as does the DA18-55 kit lens.

You'll find that some lensmakers try to standardize the front thread on as many lenses as possible, while others just go with the flow and use whatever will fit. Standard thread/filter sizes are 49-52-55-58-62-67-72-77mm. Filters and hoods etc in those sizes are easy to find. I *hate* some of my European lenses with odd sizes: 31-33-35-40-41-44-47-54mm. Well, I don't actually hate the lenses, just the tedious task of finding or fabricating hoods for them.
04-14-2011, 10:19 PM   #8
Senior Member




Join Date: Oct 2010
Posts: 115
Original Poster
will this work?

Amazon.com: Zykkor 49mm Universal Telematic Wide/Zoom 3 Position Rubber Lens Hood: Camera & Photo

or is this better?

Amazon.com: 49MM metal lens hood for Pentax & Takumar 35mm 50MM standard lens: Camera & Photo

04-14-2011, 11:38 PM   #9
Site Supporter
John Araki's Avatar

Join Date: Jul 2008
Location: Makawao, HI
Photos: Gallery
Posts: 194
I got something like the first link, from camerafilters.com .

It's good because it has threads on the inside and the caps will still fit. Only issue is that the folds will tear after some time. I brush some toluene-thinned goop on it to hold it together once it starts to go.

I remember reading a thread here on pf.com that the smc 50s are so much better when you got a little bit of shade on top, I think it's worthwhile getting.

Also, the old 28mm lenses (m28, etc) have the same 49mm filter size.
04-14-2011, 11:46 PM   #10
Veteran Member




Join Date: Nov 2010
Location: Fife, Scotland
Posts: 834
QuoteOriginally posted by lovemehate Quote
I was confused about this, I bought one for my 55mm kit lens, and its "52mm" on the side of the hood,

so before I order one for my 50mm lens It must be size 47mm (lens hood)?
If the hood screws into the filter threads you need on the same size, which will be engraved around the front element of the lens along with the focal length, maximum f-stop and so on.

The 50mm lens I have has a 49mm filter thread.

I don't know how it works with the lenses with reversible bayonet fitting hoods - I wish I did! And I wish I knew where I could get some suitable cheap hoods for my Sigma zoom lenses.
04-15-2011, 02:55 AM   #11
Ira
Inactive Account




Join Date: Mar 2009
Location: Coral Springs, FL
Photos: Gallery | Albums
Posts: 5,218
QuoteOriginally posted by cats_five Quote
And I wish I knew where I could get some suitable cheap hoods for my Sigma zoom lenses.
The greatest invention since sliced bread:



NEW Square Lens Hood Filter Hood for Cokin P series | eBay

The above image shows three modules clipped together, but you use as many as your FL requires.
04-15-2011, 04:10 AM   #12
Veteran Member
Hypocorism's Avatar

Join Date: Sep 2010
Location: Melbourne .au
Posts: 623
QuoteOriginally posted by Ira Quote
The greatest invention since sliced bread:
With all due respects I disagree. That lens hood would be awfully difficult to butter and would taste terrible when you ate it.

I'd like to know if LHCA (Lens Hood Collecting Addition) is a valid compulsive obsessive disorder syndrome to suffer from on this forum...

...because there's literally zillions of examples of absolute drool material out there just waiting to be sought out and hoarded...
Lens hood for a camera - Patent # 7883222 - PatentGenius
Lens hood, and imaging device - Google Patent Search
Matte box - Wikipedia, the free encyclopedia


.R. -- How many eBay new gimmick inventors does it take to change a lightbulb?
04-15-2011, 04:10 AM   #13
Pentaxian
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,312
It is hard for me to comment about what the lens says, as I don't own one, but, look inside the lens cap.

It usually gives the diameter of the front element accessory ring on the inside of the cap.

Many lenses have different diameter accessory rings, and they are not related to the focal length, but more closely to the F number (although this is only an approximation which is only accurate for medium tele and above)
04-15-2011, 09:45 AM   #14
Pentaxian
mikeSF's Avatar

Join Date: Jan 2009
Location: East Bay Area, CA
Photos: Gallery
Posts: 5,523
QuoteOriginally posted by Ira Quote
The greatest invention since sliced bread:



NEW Square Lens Hood Filter Hood for Cokin P series | eBay

The above image shows three modules clipped together, but you use as many as your FL requires.
i can't spread hummus on this, so no thanks!

but serious question about the Cokin hood pictured, i have one that i use w/my Cokin set and feel the need to cover the sides in some cases reduce light leakage...am i missing something obvious with this device? i have a piece of felt that i tie around the sides after setting up my filter(s), but it seems like a makeshift way to do the job.
04-15-2011, 12:04 PM   #15
Pentaxian
cardinal43's Avatar

Join Date: Oct 2007
Location: Virginia
Photos: Gallery
Posts: 2,347
QuoteOriginally posted by mikeSF Quote
i can't spread hummus on this, so no thanks!
Count yourself lucky! Hummus......YUK!! My son inhales that stuff.
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!
50mm, camera, hood, lens, pentax help, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax K 50mm F/1.2 lens hood dilemma yeatzee Pentax SLR Lens Discussion 18 08-18-2010 07:36 AM
Wanted - Acquired: PH-RBJ 77mm DA*16-50mm Lens Hood maximm Sold Items 2 01-10-2010 10:56 PM
lens hood for FA 50mm f1.4? LFLee Pentax SLR Lens Discussion 28 01-03-2010 08:25 PM
Hood for 50mm prime lens? iht Troubleshooting and Beginner Help 52 08-25-2009 07:58 PM
Rubber Hood for the FA 50mm lens Fred2726 Pentax SLR Lens Discussion 7 07-13-2009 04:02 PM



All times are GMT -7. The time now is 09:37 PM. | See also: NikonForums.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