What do you do when you crack the rear element on your lens?

ZombieArmy · 09-24-2021, 04:57 PM

A subject that was a bit further away taken at f8.

**DonV** · 09-24-2021, 08:10 PM

Well,
now if/when you sell that damaged lens you can truthfully say: "has no effect on images" ! Who would have thought ?

ZombieArmy · 09-25-2021, 01:46 AM

Originally posted by DonV

Well,
now if/when you sell that damaged lens you can truthfully say: "has no effect on images" ! Who would have thought ?

No effect? Unlikely. There will still probably be situations in certain lighting conditions where I have to properly work around it. But for most shots I agree.

AfterPentax Mark II · 09-25-2021, 03:14 AM

Originally posted by ZombieArmy

What do you do when you crack the rear element on your lens?

You sell it on Ebay! (The buyer must be a brave person.)

**UncleVanya** · 09-25-2021, 06:56 AM - **2 Likes**

Originally posted by dlhawes

My first thought was that I've got some superglue kind of stuff that's really thin, made to seep into and repair cracks in glass. I fixed my computerette ("smart phone" without a SIM) using that stuff.

The fumes from that type of glue will probably damage the coatings. It is not good around lenses. The plastic parts might also become fragile.

As for how it cracked? I’d guess thermal shock. But that’s just a guess.

**grahame** · 09-25-2021, 11:29 AM

I saw that lens on ebay and almost clicked buy button to keep it as a part resource in case my lens needs repair in the future

Congratulations! Usually we believe marks on the front will not impact image but the issues on rear element might. This lens definitely still makes good image! As a portrait lens, the edge is not that important, if there is any impact. Maybe just to avoid strong backlight?

**UncleVanya** · 10-26-2022, 01:49 PM

The original image of the lens is gone. @zombiearmy could you add a new one?

ZombieArmy · 10-26-2022, 03:50 PM - **1 Like**

Originally posted by UncleVanya

The original image of the lens is gone. @zombiearmy could you add a new one?

I can't seem to edit the original post but this is a picture of my own of the rear damage.

**UncleVanya** · 10-26-2022, 04:06 PM - **1 Like**

Originally posted by ZombieArmy

I can't seem to edit the original post but this is a picture of my own of the rear damage.

Thank you. I was calling this out in another thread and without that picture the story isn't as compelling!

ZombieArmy · 10-26-2022, 04:07 PM

Originally posted by UncleVanya

Thank you. I was calling this out in another thread and without that picture the story isn't as compelling!

Mind linking where this came up?

**UncleVanya** · 10-26-2022, 07:19 PM

I @'d you just now.

**yucatanPentax** · 10-27-2022, 12:28 AM

Originally posted by ZombieArmy

I can't seem to edit the original post but this is a picture of my own of the rear damage.

THAT is truly amazing! I mean, amazing that the images don't seem to be affected. I never would have thought . . . . . .

**pepperberry farm** · 10-27-2022, 05:25 AM

Originally posted by ZombieArmy

I can't seem to edit the original post but this is a picture of my own of the rear damage.

on an APS-C camera, that damage may never be seen....

ZombieArmy · 10-27-2022, 06:06 AM - **2 Likes**

Originally posted by pepperberry farm

on an APS-C camera, that damage may never be seen....

The damage off to the side yes but the crack goes right through the middle and never shows up directly in pictures.

It does however show up in bokeh and affect light when shooting bright sources. Of course that can be used artistically.

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09-24-2021, 04:57 PM	#16
ZombieArmy Pentaxian Join Date: Jun 2014 Location: Florida Posts: 3,210 Original Poster	A subject that was a bit further away taken at f8.

09-24-2021, 08:10 PM	#17
DonV Site Supporter Join Date: Jan 2017 Location: Near Charlotte NC Photos: Albums Posts: 693	Well, now if/when you sell that damaged lens you can truthfully say: "has no effect on images" ! Who would have thought ?

09-25-2021, 01:46 AM	#18
ZombieArmy Pentaxian Join Date: Jun 2014 Location: Florida Posts: 3,210 Original Poster	Originally posted by DonV Well, now if/when you sell that damaged lens you can truthfully say: "has no effect on images" ! Who would have thought ? No effect? Unlikely. There will still probably be situations in certain lighting conditions where I have to properly work around it. But for most shots I agree.

09-25-2021, 03:14 AM	#19
AfterPentax Mark II Pentaxian Join Date: Mar 2021 Posts: 1,458	Originally posted by ZombieArmy What do you do when you crack the rear element on your lens? You sell it on Ebay! (The buyer must be a brave person.)

09-25-2021, 06:56 AM - 2 Likes	#20
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,375	Originally posted by dlhawes My first thought was that I've got some superglue kind of stuff that's really thin, made to seep into and repair cracks in glass. I fixed my computerette ("smart phone" without a SIM) using that stuff. The fumes from that type of glue will probably damage the coatings. It is not good around lenses. The plastic parts might also become fragile. As for how it cracked? I’d guess thermal shock. But that’s just a guess.

09-25-2021, 11:29 AM	#21
grahame Loyal Site Supporter Join Date: Aug 2011 Photos: Albums Posts: 2,041	I saw that lens on ebay and almost clicked buy button to keep it as a part resource in case my lens needs repair in the future Congratulations! Usually we believe marks on the front will not impact image but the issues on rear element might. This lens definitely still makes good image! As a portrait lens, the edge is not that important, if there is any impact. Maybe just to avoid strong backlight?

10-26-2022, 01:49 PM	#22
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,375	The original image of the lens is gone. @zombiearmy could you add a new one?

10-26-2022, 03:50 PM - 1 Like	#23
ZombieArmy Pentaxian Join Date: Jun 2014 Location: Florida Posts: 3,210 Original Poster	Originally posted by UncleVanya The original image of the lens is gone. @zombiearmy could you add a new one? I can't seem to edit the original post but this is a picture of my own of the rear damage.

10-26-2022, 04:06 PM - 1 Like	#24
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,375	Originally posted by ZombieArmy I can't seem to edit the original post but this is a picture of my own of the rear damage. Thank you. I was calling this out in another thread and without that picture the story isn't as compelling!

10-26-2022, 04:07 PM	#25
ZombieArmy Pentaxian Join Date: Jun 2014 Location: Florida Posts: 3,210 Original Poster	Originally posted by UncleVanya Thank you. I was calling this out in another thread and without that picture the story isn't as compelling! Mind linking where this came up?

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10-26-2022, 07:19 PM	#26
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,375	I @'d you just now.

10-27-2022, 12:28 AM	#27
yucatanPentax Loyal Site Supporter Join Date: Dec 2009 Location: Dallas / Yucatan Posts: 1,838	Originally posted by ZombieArmy I can't seem to edit the original post but this is a picture of my own of the rear damage. THAT is truly amazing! I mean, amazing that the images don't seem to be affected. I never would have thought . . . . . .

10-27-2022, 05:25 AM	#28
pepperberry farm amateur dirt farmer Join Date: Dec 2014 Location: probably out in a field somewhere... Photos: Gallery \| Albums Posts: 41,625	Originally posted by ZombieArmy I can't seem to edit the original post but this is a picture of my own of the rear damage. on an APS-C camera, that damage may never be seen....

10-27-2022, 06:06 AM - 2 Likes	#29
ZombieArmy Pentaxian Join Date: Jun 2014 Location: Florida Posts: 3,210 Original Poster	Originally posted by pepperberry farm on an APS-C camera, that damage may never be seen.... The damage off to the side yes but the crack goes right through the middle and never shows up directly in pictures. It does however show up in bokeh and affect light when shooting bright sources. Of course that can be used artistically.