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adapter to fit a lens shade on AF 28-135mm f4-4.5

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Post Options Post Options   Quote awa54 Quote  Post ReplyReply Direct Link To This Post Topic: adapter to fit a lens shade on AF 28-135mm f4-4.5
    Posted: 19 June 2018 at 22:26
We all know that the 28-135 didn't come with a hood, that screw-in ones vignette at the wide end and that the lens suffers from bad enough flare issues that it really needs all the help it can get to be a good performer on a sunny day.

So I designed a 3D printed TPU grommet (a fancy one!) to allow a metal hood to friction fit on to the endbell of the lens.

Once my Thingiverse account allows me to post "things" I'll link to the file, or you can PM me and I'll email it to you.

I will also post pics of it fitted to the lens once I take some....



https://www.thingiverse.com/thing:2969055

Don't be like me and print it in red...

Edited by awa54 - 22 June 2018 at 21:56
a900, a700 and plenty of glass ;)
 



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awa54 View Drop Down
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Post Options Post Options   Quote awa54 Quote  Post ReplyReply Direct Link To This Post Posted: 20 June 2018 at 02:17
pictures of the adapter mounted on my 28-135mm f4-4.5

hood adapter bushing by David Wimmer, on Flickr


hood adapter bushing by David Wimmer, on Flickr


hood adapter bushing by David Wimmer, on Flickr


hood adapter bushing by David Wimmer, on Flickr


hood adapter bushing by David Wimmer, on Flickr
a900, a700 and plenty of glass ;)
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awa54 View Drop Down
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Post Options Post Options   Quote awa54 Quote  Post ReplyReply Direct Link To This Post Posted: 20 June 2018 at 03:28
...black sharpie has been applied to the front of the adapter; no more red glow reflecting off the inside of the hood!

The translucent red was the only color of TPU my brother had on hand to make this with, if I had a choice it would have been black.
a900, a700 and plenty of glass ;)
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Photosopher View Drop Down
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Post Options Post Options   Quote Photosopher Quote  Post ReplyReply Direct Link To This Post Posted: 20 June 2018 at 05:10
Clever and handsome enough for the old boy. Good job. I know you had fun with this project.

Now I wonder if your 3D printer could print the entire hood, and even in a collapsible cup style to accommodate the telephoto.

On my 28-135 Mino, I had good luck with this style of collapsible rubber shade and actually appreciated the extra rubber shock absorber against bumps.

Edited by Photosopher - 20 June 2018 at 05:15
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Post Options Post Options   Quote SnowFella Quote  Post ReplyReply Direct Link To This Post Posted: 20 June 2018 at 05:28
Done the same as sopher with mine, cheapo rubber hood.
Though with a few years of use it looks like I once again need to buy one as the old is starting to fall apart from wear.
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 20 June 2018 at 09:41
Originally posted by Photosopher Photosopher wrote:

On my 28-135 Mino, I had good luck with this style of collapsible rubber shade and actually appreciated the extra rubber shock absorber against bumps.


Yes, those multi-stage collapsible Hoya ones are very good. I have used a few of them over the years.
Miranda F & Sensorex, Sony A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras . . .
 



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Post Options Post Options   Quote awa54 Quote  Post ReplyReply Direct Link To This Post Posted: 21 June 2018 at 02:10
Originally posted by Miranda F Miranda F wrote:

Originally posted by Photosopher Photosopher wrote:

On my 28-135 Mino, I had good luck with this style of collapsible rubber shade and actually appreciated the extra rubber shock absorber against bumps.


Yes, those multi-stage collapsible Hoya ones are very good. I have used a few of them over the years.


Though stacking any screw-on hood and a filter will cause vignetting at 28mm :(
a900, a700 and plenty of glass ;)
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Post Options Post Options   Quote neilt3 Quote  Post ReplyReply Direct Link To This Post Posted: 21 June 2018 at 09:28
Originally posted by awa54 awa54 wrote:

Originally posted by Miranda F Miranda F wrote:

Originally posted by Photosopher Photosopher wrote:

On my 28-135 Mino, I had good luck with this style of collapsible rubber shade and actually appreciated the extra rubber shock absorber against bumps.


Yes, those multi-stage collapsible Hoya ones are very good. I have used a few of them over the years.


Though stacking any screw-on hood and a filter will cause vignetting at 28mm :(


When I'm using my 28-135mm I use a 3 stage rubber hood , but to prevent vignetting I use a 72-77mm step up ring and a 77mm hood .
No vignetting at 28mm .Never noticed any with a low profile filter on either ,
on Minolta film cameras or a Sony a900 camera .
see my photostream on flickr;
http://www.flickr.com/photos/neilt3/
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 21 June 2018 at 09:38
Originally posted by awa54 awa54 wrote:

Originally posted by Miranda F Miranda F wrote:

Originally posted by Photosopher Photosopher wrote:

On my 28-135 Mino, I had good luck with this style of collapsible rubber shade and actually appreciated the extra rubber shock absorber against bumps.


Yes, those multi-stage collapsible Hoya ones are very good. I have used a few of them over the years.


Though stacking any screw-on hood and a filter will cause vignetting at 28mm :(


You can put the filter on after the hood with the proper Hoya ones, but that may not help at widest angle. Without the filters, you can usually fold them back enough not to cause vignetting (if you have the right one for the FL range).
Miranda F & Sensorex, Sony A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras . . .
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Post Options Post Options   Quote awa54 Quote  Post ReplyReply Direct Link To This Post Posted: 22 June 2018 at 21:53
Here is the printable object on Thingiverse:

https://www.thingiverse.com/thing:2969055
a900, a700 and plenty of glass ;)
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Post Options Post Options   Quote bieomax Quote  Post ReplyReply Direct Link To This Post Posted: 22 June 2018 at 22:04
nice share.
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Post Options Post Options   Quote awa54 Quote  Post ReplyReply Direct Link To This Post Posted: 22 June 2018 at 22:23
Originally posted by Photosopher Photosopher wrote:

Clever and handsome enough for the old boy. Good job. I know you had fun with this project.

Now I wonder if your 3D printer could print the entire hood, and even in a collapsible cup style to accommodate the telephoto.

On my 28-135 Mino, I had good luck with this style of collapsible rubber shade and actually appreciated the extra rubber shock absorber against bumps.


I'm sure that a hood could be printed, it would be functional, but the surface smoothness of objects printed on home grade 3D printers is a bit lumpy compared to the finish on good injection molded items... that and often the surface is fairly shiny when using PLA or PETG.
a900, a700 and plenty of glass ;)
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Post Options Post Options   Quote EarthQuake Quote  Post ReplyReply Direct Link To This Post Posted: 04 July 2018 at 05:29
This is really cool to see.

Something else that might be worth trying for anyone who doesn't have access to a 3D printer: take a 72mm to 82mm adapter ring and put an 82mm screw on hood on that, assuming the hood isn't super long that will probably sort out the vignetting.
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Post Options Post Options   Quote stiuskr Quote  Post ReplyReply Direct Link To This Post Posted: 04 July 2018 at 11:57
Originally posted by awa54 awa54 wrote:

... but the surface smoothness of objects printed on home grade 3D printers is a bit lumpy compared to the finish on good injection molded items... that and often the surface is fairly shiny when using PLA or PETG.


There's finishing chemicals you can spray on the piece that will leave a smooth flat surface, as far a glossy surfaces goes there's quite a few solutions for that such as fine steel wool or flat black paint.
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