Macro Reverse adapter, fix for tight fit?

Giklab · 03-13-2016, 03:46 AM

I've just received a set of Auto macro tubes and a 49mm reverse adapter (at a pretty good price, if I may gloat

). The tubes work fine, the only problem is that I can barely get the reverse adapter on and off the camera (or the tubes, for that matter). I'd rather not sand down the mount, as the adapter looks pretty much new, but do I have a choice?

Unregistered User 8 · 03-13-2016, 04:12 AM

Hi Giklab. I think any camera equipment you need to sand, or chisel, or cut with a hacksaw, or hit with a hammer to make it fit, isn't the right equipment for your camera. But it is your choice.

Good luck.

Giklab · 03-13-2016, 04:20 AM

Well, this is the first piece of Pentax equipment I've tried that doesn't play well

I really don't want to resort to modifying it if I can help it.

Unregistered User 8 · 03-13-2016, 04:32 AM

Originally posted by Giklab

Well, this is the first piece of Pentax equipment I've tried that doesn't play well

Pentax don't make equipment that needs sanding !!! But it is still your choice.

Giklab · 03-13-2016, 05:29 AM

Originally posted by pjv

Pentax don't make equipment that needs sanding !!! But it is still your choice.

So you've told me. It doesn't change the fact that I have an adapter I'd like to use which gets very much stuck on my camera. And I'm trying to find solutions OTHER THAN sanding it down. Was I not clear enough in the OP? o.O

bigdavephoto · 03-13-2016, 05:47 AM

Just my 2 cents, but it sounds like one of the flanges on the adapter might be bent a little. Get a ruler and check the flanges on the adapter and compare them to a lens that you know fits properly.

If the flanges are bent on the adapter, your choices are to either get a different adapter or to use some pliers and tweak the flanges into the correct position.

Not a Number · 03-13-2016, 05:51 AM

I have a couple of original Minolta adapters that are very tight fitting. Tolerances vary in + / - directions. If you put two pieces of equipment one at the limit of the + and the other at the limit of the - tolerance together they may be nearly be out of range.

Third party reverse adapters are cheap enough. Just buy another one and see if it fits better.

Other than mounting and dismounting and hoping it will wear in I don't see much alternative other than sanding - 000 or 0000 steel wool would be better - just clean thoroughly with a tooth brush before bringing it any where near you camera equipment.

**ramseybuckeye** · 03-13-2016, 06:10 AM - **1 Like**

I just bought a new 49mm reverse adapter for $4.05 and it works just fine. When you can get a new one that cheap, why mess with something that may damage your mount.

stevebrot · 03-13-2016, 09:27 AM - **2 Likes**

Originally posted by Giklab

do I have a choice?

Send it back to its maker.

Steve

Unregistered User 8 · 03-13-2016, 01:59 PM

Originally posted by ramseybuckeye

I just bought a new 49mm reverse adapter for $4.05 and it works just fine. When you can get a new one that cheap, why mess with something that may damage your mount.

Originally posted by stevebrot

Send it back to its maker.

Steve

Excellent advice.

Giklab · 03-13-2016, 02:02 PM

I'll try to find a micrometer somewhere. Doesn't look like anything's bent to my eye, but I may be mistaken. It is, in the end, probably just a matter of tolerance like NaN said.
The guy who sold it to me said he used it in combination with the tubes (and a) he has loads of images to prove it and b) the adapter does lock into the tubes easier).

stevebrot · 03-13-2016, 03:06 PM

Originally posted by stevebrot

Send it back to its maker.

Steve

I should elaborate a little. A tight mount comes at a price and that price is using at least one part of your kit as a machine tool. At the very least, there is the potential for fine metal shards to find their way into camera and/or lens.

Steve

03-13-2016, 03:46 AM	#1
Giklab Veteran Member Join Date: Jan 2012 Location: Slovenia Photos: Gallery Posts: 2,182	Reverse adapter, fix for tight fit? I've just received a set of Auto macro tubes and a 49mm reverse adapter (at a pretty good price, if I may gloat ). The tubes work fine, the only problem is that I can barely get the reverse adapter on and off the camera (or the tubes, for that matter). I'd rather not sand down the mount, as the adapter looks pretty much new, but do I have a choice?

03-13-2016, 09:27 AM - 2 Likes	#9
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by Giklab do I have a choice? Send it back to its maker. Steve Last edited by stevebrot; 03-13-2016 at 03:06 PM.

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03-13-2016, 04:12 AM	#2
Unregistered User 8 Closed Account Join Date: Mar 2015 Photos: Gallery Posts: 8,694	Hi Giklab. I think any camera equipment you need to sand, or chisel, or cut with a hacksaw, or hit with a hammer to make it fit, isn't the right equipment for your camera. But it is your choice. Good luck.

03-13-2016, 04:20 AM	#3
Giklab Veteran Member Join Date: Jan 2012 Location: Slovenia Photos: Gallery Posts: 2,182 Original Poster	Well, this is the first piece of Pentax equipment I've tried that doesn't play well I really don't want to resort to modifying it if I can help it.

03-13-2016, 04:32 AM	#4
Unregistered User 8 Closed Account Join Date: Mar 2015 Photos: Gallery Posts: 8,694	Originally posted by Giklab Well, this is the first piece of Pentax equipment I've tried that doesn't play well Pentax don't make equipment that needs sanding !!! But it is still your choice.

03-13-2016, 05:29 AM	#5
Giklab Veteran Member Join Date: Jan 2012 Location: Slovenia Photos: Gallery Posts: 2,182 Original Poster	Originally posted by pjv Pentax don't make equipment that needs sanding !!! But it is still your choice. So you've told me. It doesn't change the fact that I have an adapter I'd like to use which gets very much stuck on my camera. And I'm trying to find solutions OTHER THAN sanding it down. Was I not clear enough in the OP? o.O

03-13-2016, 05:47 AM	#6
bigdavephoto Pentaxian Join Date: Nov 2011 Location: East central Indiana Photos: Gallery Posts: 893	Just my 2 cents, but it sounds like one of the flanges on the adapter might be bent a little. Get a ruler and check the flanges on the adapter and compare them to a lens that you know fits properly. If the flanges are bent on the adapter, your choices are to either get a different adapter or to use some pliers and tweak the flanges into the correct position.

03-13-2016, 05:51 AM	#7
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	I have a couple of original Minolta adapters that are very tight fitting. Tolerances vary in + / - directions. If you put two pieces of equipment one at the limit of the + and the other at the limit of the - tolerance together they may be nearly be out of range. Third party reverse adapters are cheap enough. Just buy another one and see if it fits better. Other than mounting and dismounting and hoping it will wear in I don't see much alternative other than sanding - 000 or 0000 steel wool would be better - just clean thoroughly with a tooth brush before bringing it any where near you camera equipment.

03-13-2016, 06:10 AM - 1 Like	#8
ramseybuckeye Site Supporter Join Date: Apr 2009 Location: Hampstead, NC Photos: Gallery Posts: 17,291	I just bought a new 49mm reverse adapter for $4.05 and it works just fine. When you can get a new one that cheap, why mess with something that may damage your mount.

03-13-2016, 01:59 PM	#10
Unregistered User 8 Closed Account Join Date: Mar 2015 Photos: Gallery Posts: 8,694	Originally posted by ramseybuckeye I just bought a new 49mm reverse adapter for $4.05 and it works just fine. When you can get a new one that cheap, why mess with something that may damage your mount. Originally posted by stevebrot Send it back to its maker. Steve Excellent advice.

03-13-2016, 02:02 PM	#11
Giklab Veteran Member Join Date: Jan 2012 Location: Slovenia Photos: Gallery Posts: 2,182 Original Poster	I'll try to find a micrometer somewhere. Doesn't look like anything's bent to my eye, but I may be mistaken. It is, in the end, probably just a matter of tolerance like NaN said. The guy who sold it to me said he used it in combination with the tubes (and a) he has loads of images to prove it and b) the adapter does lock into the tubes easier).

03-13-2016, 03:06 PM	#12
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by stevebrot Send it back to its maker. Steve I should elaborate a little. A tight mount comes at a price and that price is using at least one part of your kit as a machine tool. At the very least, there is the potential for fine metal shards to find their way into camera and/or lens. Steve

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