Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-25-2018, 12:29 PM   #16
Loyal Site Supporter
Loyal Site Supporter
henrikpedersen33's Avatar

Join Date: Jul 2016
Location: Roskilde, Denmark
Photos: Gallery
Posts: 540
QuoteOriginally posted by MossyRocks Quote
Here is another interesting object. Some of the inner workings of an old Elgin 19 jewel wrist watch. The watch face is slightly larger than a quarter and this image covers about 1/6 of the area.
The setup on the camera was a the #1 pentax M42 extension tube with a M42 to 49mm filter reversing adapter with the 28mm SMC Takumar lens on the end. A flash from above was used to provide the necessary illumination.

Looking for a general critique on technique and/or composition.



For those who are too young and don't know what is meant by jewels in watches it is in reference to some of the bearings used. These bearings were made typically out of sapphire or ruby as the provided a very hard, low friction, and dimensionally stable surface which all go a long way to improving the reliability and accuracy of mechanical watches. A fully jeweled watch would have 17 jeweled bearings but as time progressed watch makers found that it made a good advertising point so the counts kept increasing with no actual benefit in overall performance or reliability. In this picture I believe there are 5 jewels one being a cap with another under it.
Nice shot. Though one only can see 1/6 of the area, one can imagine how diffucult it is to make these wristwatches. Very fine mechanics.
I love thes macro-shots.

07-15-2018, 07:47 AM   #17
Loyal Site Supporter
Loyal Site Supporter
KC0PET's Avatar

Join Date: Oct 2015
Location: Central Missouri
Photos: Gallery | Albums
Posts: 3,679
Very awesome! I wouldn't change a thing.
07-28-2018, 03:18 PM   #18
Junior Member




Join Date: Dec 2015
Posts: 45
QuoteOriginally posted by MossyRocks Quote
Here is another interesting object. Some of the inner workings of an old Elgin 19 jewel wrist watch. The watch face is slightly larger than a quarter and this image covers about 1/6 of the area.
The setup on the camera was a the #1 pentax M42 extension tube with a M42 to 49mm filter reversing adapter with the 28mm SMC Takumar lens on the end. A flash from above was used to provide the necessary illumination.

Looking for a general critique on technique and/or composition.



For those who are too young and don't know what is meant by jewels in watches it is in reference to some of the bearings used. These bearings were made typically out of sapphire or ruby as the provided a very hard, low friction, and dimensionally stable surface which all go a long way to improving the reliability and accuracy of mechanical watches. A fully jeweled watch would have 17 jeweled bearings but as time progressed watch makers found that it made a good advertising point so the counts kept increasing with no actual benefit in overall performance or reliability. In this picture I believe there are 5 jewels one being a cap with another under it.
nice macro shot!
07-28-2018, 04:44 PM   #19
Site Supporter
Site Supporter




Join Date: Sep 2015
Posts: 66
Beautiful shot, I like the lighting alot. I found the DoV a little distracting

07-29-2018, 04:27 PM   #20
Senior Member




Join Date: Oct 2009
Location: Ontario
Photos: Gallery
Posts: 240
I am a fan of vintage mechanical watches. Your shot captures some of the intricacy very well. For my eye the focus is exactly where it should be.
07-30-2018, 10:06 AM   #21
Site Supporter
Site Supporter
MossyRocks's Avatar

Join Date: Nov 2017
Location: Minnesota
Photos: Gallery | Albums
Posts: 677
Original Poster
QuoteOriginally posted by nmcleod1993 Quote
Beautiful shot, I like the lighting alot. I found the DoV a little distracting
It is really hard to get a deep DoF with a 2:1 macro, even when stopping things down. I probably could have stopped it down to f/16 but then it becomes an even harder shot. I have taken some of the advice from others here and have tried focus stacking but this seems like one of those images where things go sideways fast. I was using the SMC takumar 55mm f/1.8 on 112mm of extension tubes for a 2:1 macro there but there was just so much focus breathing going from front to back that there were fairly noticeable halos around everything.
08-05-2018, 02:37 PM   #22
Pentaxian
stillshot2's Avatar

Join Date: Sep 2013
Location: Phoenix, AZ
Photos: Albums
Posts: 932
QuoteOriginally posted by MossyRocks Quote
Here is another interesting object. Some of the inner workings of an old Elgin 19 jewel wrist watch. The watch face is slightly larger than a quarter and this image covers about 1/6 of the area.
The setup on the camera was a the #1 pentax M42 extension tube with a M42 to 49mm filter reversing adapter with the 28mm SMC Takumar lens on the end. A flash from above was used to provide the necessary illumination.

Looking for a general critique on technique and/or composition.



For those who are too young and don't know what is meant by jewels in watches it is in reference to some of the bearings used. These bearings were made typically out of sapphire or ruby as the provided a very hard, low friction, and dimensionally stable surface which all go a long way to improving the reliability and accuracy of mechanical watches. A fully jeweled watch would have 17 jeweled bearings but as time progressed watch makers found that it made a good advertising point so the counts kept increasing with no actual benefit in overall performance or reliability. In this picture I believe there are 5 jewels one being a cap with another under it.
Nice detail! I love mechanical watches
08-05-2018, 03:23 PM   #23
Site Supporter
Site Supporter
MossyRocks's Avatar

Join Date: Nov 2017
Location: Minnesota
Photos: Gallery | Albums
Posts: 677
Original Poster
QuoteOriginally posted by stillshot2 Quote
Nice detail! I love mechanical watches
I do too and have played around trying to shoot it different ways including attempting focus stacking but things always go astray. Especially when doing focus stacking. Does anyone have tips of doing it with something with as complex focal plane as this?

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!
bearings, critique, gears, jewels, lens, m42, macro, magnification, photography, practice, range, reliability, reverse, watch, watches
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Using flash with mechanical bodies sandy_ada Pentax Film SLR Discussion 12 05-23-2018 03:39 PM
Is this mechanical cable release ok for my p30t? kmladeno Pentax Camera and Field Accessories 4 07-21-2017 07:46 AM
What happened to the firmware update with mechanical SR in video mode? Tjompen1968 Pentax K-1 8 07-04-2017 01:09 PM
On K1 - Mechanical VS Electronic shutter question! Fenwoodian Pentax K-1 5 10-21-2016 03:27 PM
electro mechanical engineering challenge for macro Nass Pentax Camera and Field Accessories 10 10-14-2016 09:20 PM



All times are GMT -7. The time now is 02:36 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