Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
04-17-2022, 10:18 PM - 4 Likes   #31
Senior Member




Join Date: Aug 2016
Location: Leura NSW
Posts: 281
Jumping to conclusions is the only exercise I get🤪

04-18-2022, 04:58 AM - 1 Like   #32
Site Supporter
Site Supporter




Join Date: Sep 2017
Location: Floreat
Posts: 587
QuoteOriginally posted by rojogannon Quote
Hello.
I have to offer my most humble apology for my ridiculous thread and I do feel somewhat embarrassed I have to say.
There is nothing wrong with the plastic lens mount. The black specks are coming from the worn Pentax strap. The inside of the strap is made of some sort of velveteen material which is quietly falling apart.
So I guess what my thread should have said was " worn Pentax straps should be replaced as soon as possible".
That is unless someone has a good idea to treat the strap in some way to clear the muck. It's just as important to be careful when changing any lens really that this muck does not get inside the camera.

PS Is there any way to either remove this thread or at least change the title please administrator?
Well spotted, friend. I have had problems over the years with dirt in my sensor arising from both the Pentax Strap backing layer starting to fall apart, and from foam in the lens cases. In both cases, the detritus was sticky and didn't move easily with a blower, sounds like you were more fortunate, since I ended up paying for sensor cleans both times.

Welcome to the forum of helpful and interested Pentaxians. Great to hear that you have no problems with lens or camera bodies.
04-27-2022, 07:59 PM   #33
Forum Member




Join Date: Mar 2010
Location: Adelaide
Photos: Albums
Posts: 79
QuoteOriginally posted by rojogannon Quote
Ok so here's the thing.
There is nothing wrong with plastic lens mounts right ? Well I beg to differ after my recent experience.
About three years ago I bought the penta da 50ml f1.8 with plastic lens mount. At the time I thought nothing of it. It didn't turn out to be a particularly useful lens so I haven't used it much at all.
This year I have noticed Pentax used DSLR cameras are selling cheaply so I decided to buy more cameras, and started to use the da 50 a bit more.
Also I got a bit more confident with changing lenses which was something I had avoided doing too much because I wanted to keep the sensor clean. In fact I've never needed a professional sensor clean because the in built system is quite well designed. So I have plucked up more courage and I'm using all my lenses more frequently which means I am enjoying the fun of photography much more than before.
Occasionally I have noticed quite a few black specks appearing on my dining table where I carefully change lenses. I didn't really think about their origin until one day after cleaning the table and then swapping lenses the black specks appeared again. I had just removed the da 50 from my camera.
So every time I remove this lens from a camera, the black specs appear. So I then thought, what if these black specs are getting into the camera as well ?
So I have had to methodically check all my cameras using a blower first in the mirror box ( which found and removed a fair few black specks and in one case having to raise the mirror to use the blower in the sensor area as well. I don't think any specks had got into the sensor area but there was a tiny thread which was removed.
So is it really sensible to use plastic mounts for lenses?
I have two DAL 18-55mm Pentax. One with metal mount, the other plastic. Find that either way still need the same periodic dust cleaning off the sensor. BTW the one with the plastic mount has better optical quality. Notice this in astrophotography. For the metal mounted, stars never really sharp with uneven focus across the field, while the plastic mount stars are crisp across the field.


Marty
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!
camera, cameras, da, lens, lenses, mounts, pentax help, photography, plastic, plastic lens mounts, sensor, specks, troubleshooting
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Pakon plastic slide mounts,w/slides mounted approx 350 pcs Free,just pay postage 17dew Sold Items 1 01-07-2020 10:37 PM
LensRentals.com - Plastic Mounts, WR and Professional Grade II angerdan Pentax SLR Lens Discussion 21 10-11-2019 11:50 AM
Gepe plastic slide mounts gofour3 Film Processing, Scanning, and Darkroom 3 05-23-2017 02:36 PM
Pentax Da35mm 2.4 plastic lens vs Da 50mm 1.8 plastic lens fevbusch Pentax SLR Lens Discussion 24 01-26-2014 06:49 PM
LensRentals.com - Plastic Mounts, WR and Professional Grade interested_observer Pentax SLR Lens Discussion 13 01-06-2014 09:44 AM



All times are GMT -7. The time now is 02:01 PM. | See also: NikonForums.com, CanonForums.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