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justbob · 08-06-2021, 04:28 AM

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Hi all,
For the second time, I've lost the rubber part from the small eyecup (38461) on my 645z. It comes off so easily!
I see the price for a full replacement has gone up substantially since I lost it last time.
Does anyone have ideas for DIY-ing or otherwise replacing only that little rubber ring on that eyecup assembly?
Thanks!

MarkJerling · 08-06-2021, 05:13 AM

Is this the same part?
PENTAX Large Eyecup 645 O-EC107 39897 For PENTAX 645D from Japan [New] #A337 4961333167357 | eBay

chrism888 · 08-06-2021, 06:17 AM - **1 Like**

I used 2 narrow and smallish black cable ties around the section that attaches to the 645z, its not tight enough to stop the eyepiece rotating, but is enough to keep it on the camera, so far has kept mine on for over 2 years having like you lost the original and one more.

justbob · 08-06-2021, 06:45 PM

No, it's the small one, like this:
PENTAX Eye Cup 645 38461 Free Shipping with Tracking number New from Japan | eBay

Originally posted by MarkJerling

Is this the same part?
PENTAX Large Eyecup 645 O-EC107 39897 For PENTAX 645D from Japan [New] #A337 4961333167357 | eBay

**BigMackCam** · 08-06-2021, 09:13 PM

Originally posted by justbob

No, it's the small one, like this:
PENTAX Eye Cup 645 38461 Free Shipping with Tracking number New from Japan | eBay

If it's that exact part number, there's a seller in Japan has them for around USD $15 inc. shipping:

[New] PENTAX Eye Cup 645 38461 for PENTAX 645 645N 645NII from Japan

The materials and time required for a DIY solution would seem to be worth more than $15, IMHO, and the end result wouldn't be as nice...

justbob · 08-07-2021, 07:12 PM

Thanks.
I didn't try eBay for sellers that only ship to the US. I'm in Canada; once the border reopens, I'll have one sent to an address I have just over the border in the States.
The first eBay search I did only found a couple for over $30 (that will send to Canada).

**BigMackCam** · 08-08-2021, 12:50 AM

Originally posted by justbob

Thanks.
I didn't try eBay for sellers that only ship to the US. I'm in Canada; once the border reopens, I'll have one sent to an address I have just over the border in the States.
The first eBay search I did only found a couple for over $30 (that will send to Canada).

That eBay auction link I provided above offers international shipping, so you could have it sent direct to Canada

Attached Images

Last edited by BigMackCam; 08-08-2021 at 01:52 AM.

08-06-2021, 04:28 AM	#1
justbob New Member Join Date: Jun 2009 Location: Saint John, NB, Canada Posts: 6	Eyecup for 645z (replace rubber part?) Staff note: This post may contain affiliate links, which means Pentax Forums may earn a small commission if a visitor clicks through and makes a purchase. If you would like to support the forum directly, you may also make a donation here. Hi all, For the second time, I've lost the rubber part from the small eyecup (38461) on my 645z. It comes off so easily! I see the price for a full replacement has gone up substantially since I lost it last time. Does anyone have ideas for DIY-ing or otherwise replacing only that little rubber ring on that eyecup assembly? Thanks!

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08-06-2021, 05:13 AM	#2
MarkJerling Moderator Site Supporter Join Date: May 2012 Location: Wairarapa, New Zealand Photos: Gallery \| Albums Posts: 20,423	Is this the same part? PENTAX Large Eyecup 645 O-EC107 39897 For PENTAX 645D from Japan [New] #A337 4961333167357 \| eBay

08-06-2021, 06:17 AM - 1 Like	#3
chrism888 Senior Member Join Date: Feb 2012 Posts: 178	I used 2 narrow and smallish black cable ties around the section that attaches to the 645z, its not tight enough to stop the eyepiece rotating, but is enough to keep it on the camera, so far has kept mine on for over 2 years having like you lost the original and one more.

08-06-2021, 06:45 PM	#4
justbob New Member Join Date: Jun 2009 Location: Saint John, NB, Canada Posts: 6 Original Poster	No, it's the small one, like this: PENTAX Eye Cup 645 38461 Free Shipping with Tracking number New from Japan \| eBay Originally posted by MarkJerling Is this the same part? PENTAX Large Eyecup 645 O-EC107 39897 For PENTAX 645D from Japan [New] #A337 4961333167357 \| eBay

08-06-2021, 09:13 PM	#5
BigMackCam Digitiser of Film Join Date: Mar 2010 Location: North East of England Posts: 20,705	Originally posted by justbob No, it's the small one, like this: PENTAX Eye Cup 645 38461 Free Shipping with Tracking number New from Japan \| eBay If it's that exact part number, there's a seller in Japan has them for around USD $15 inc. shipping: [New] PENTAX Eye Cup 645 38461 for PENTAX 645 645N 645NII from Japan The materials and time required for a DIY solution would seem to be worth more than $15, IMHO, and the end result wouldn't be as nice...

08-07-2021, 07:12 PM	#6
justbob New Member Join Date: Jun 2009 Location: Saint John, NB, Canada Posts: 6 Original Poster	Thanks. I didn't try eBay for sellers that only ship to the US. I'm in Canada; once the border reopens, I'll have one sent to an address I have just over the border in the States. The first eBay search I did only found a couple for over $30 (that will send to Canada).

08-08-2021, 12:50 AM	#7
BigMackCam Digitiser of Film Join Date: Mar 2010 Location: North East of England Posts: 20,705	Originally posted by justbob Thanks. I didn't try eBay for sellers that only ship to the US. I'm in Canada; once the border reopens, I'll have one sent to an address I have just over the border in the States. The first eBay search I did only found a couple for over $30 (that will send to Canada). That eBay auction link I provided above offers international shipping, so you could have it sent direct to Canada Attached Images Last edited by BigMackCam; 08-08-2021 at 01:52 AM.

Eyecup for 645z (replace rubber part?)

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