Pentax-A 50/2.8 Macro with Bellow

Danny_SWE

Mu-43 All-Pro
Joined
Apr 30, 2013
Messages
1,340
Location
Sweden (Gothenburg)
Bellow with rig

Subscribe to see EXIF info for this image (if available)
Pentax 50mm Macro w Bellow - 05 - Bellow w lens by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Pentax 50mm Macro w Bellow - 06 - Rigged and ready by Zarako, on Flickr

Photo with medium magnification:

Subscribe to see EXIF info for this image (if available)
Pentax 50mm Macro w Bellow - 01 - Medium magnification by Zarako, on Flickr

Photo with max magnification
Sorry about the sharpness, will post better photos later. At least you get a hint about the magnification and coverage.

Subscribe to see EXIF info for this image (if available)
Pentax 50mm Macro w Bellow - 02 - Max magnification by Zarako, on Flickr

Comparison shot with Olympus 60/2.8 Macro at 1:1 max magnification

Subscribe to see EXIF info for this image (if available)
Pentax 50mm Macro w Bellow - 04 - Olympus 60mm Macro Max Magnification comparison by Zarako, on Flickr





Only the lens

Subscribe to see EXIF info for this image (if available)
Olympus E-M5 w Pentax 50mm Macro by Zarako, on Flickr

And photos with just the lens:

Subscribe to see EXIF info for this image (if available)
Pentax 50mm Macro w Bellow - 03 - Only lens without bellow, medium magnification by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Pentax 50mm Macro w Bellow - 03 - Only lens without bellow, max magnification by Zarako, on Flickr


The lens is really sharp. I did some calculations before where i got 3:1 magnification (?) should be enough to get nice insects photos. I'll be back...
 

Danny_SWE

Mu-43 All-Pro
Joined
Apr 30, 2013
Messages
1,340
Location
Sweden (Gothenburg)
More photos here...

Tried with various objects at home. All pics are 100%, no crop. Only adjustment is levels.


Subscribe to see EXIF info for this image (if available)
Bellow_00 - Objects by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Bellow_01 - Opener dragon by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Bellow_02 - One Dollar God by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Bellow_03 - One Dollar Eye by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Bellow_04 - Russian coin bird by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Bellow_05 - Russian coin text by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Bellow_06 - Pen tip by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Bellow_07 - Knife text by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Bellow_08 - Knife painting by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Bellow_09 - Key old by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Bellow_10 - Key new by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Bellow_11 - M3 Bolt perspective by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Bellow_12 - M3 Bolt by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Bellow_14 - 20-bill Nils Holgersson by Zarako, on Flickr
 

Danny_SWE

Mu-43 All-Pro
Joined
Apr 30, 2013
Messages
1,340
Location
Sweden (Gothenburg)
Subscribe to see EXIF info for this image (if available)
Bellow_15 - Millimeters by Zarako, on Flickr

This pic with some measurements gave about 2.8X magnification.

(width 487,7mm and between 5mm on the scale it is 396,7mm. That gives 2,814 magnification if the sensor width is 17,3mm)

(this page says 3.34X if 50mm with 0.5X and 142mm bellow, some measurement must be wrong there)

...


Here is a focus stacked version of the 3mm bolt (M3), 8 exposures.


Subscribe to see EXIF info for this image (if available)
Bellow_13 - M3 Bolt stack HDR by Zarako, on Flickr
 

Danny_SWE

Mu-43 All-Pro
Joined
Apr 30, 2013
Messages
1,340
Location
Sweden (Gothenburg)
Re-rigged the slider and stuff. Found some unused equipment that could be used to this. A small clip to hold the end of the bellow. A clamp to hold the object, on the smaller tripod. And the light-umbrella-rig.

Subscribe to see EXIF info for this image (if available)
Pentax 50mm Macro w Bellow - 10 - Gear by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Pentax 50mm Macro w Bellow - 11 - Gear by Zarako, on Flickr

Subscribe to see EXIF info for this image (if available)
Pentax 50mm Macro w Bellow - 12 - Rigged by Zarako, on Flickr

Lots of trouble just to get above 1:1 magnification :) well, I got these stuff cheap and wanted to try some extreme macro. On my last system I had the Sigma 105/2.8 macro with a Canon 18-55 zoom on reverse ring. That was really extreme, very difficult to handle. This setup was also very difficult. The DOF is extremely shallow and the slider is really crappy. One thing that could be spent a little more money on is the slider, especially when doing stacking it's really hopeless with a slider that's not really sturdy. And... I might have used a wider lens to be able to get even more magnification. But I have a feeling this will do it for now.

Next plan is making an own 20cm extension tube for using native lenses! :) maybe it could be done using a lens cap and a body cap!? Don't know. It's fun to experiment... :)
 
Links on this page may be to our affiliates. Sales through affiliate links may benefit this site.
Mu-43 is a fan site and not associated with Olympus, Panasonic, or other manufacturers mentioned on this site.
Forum post reactions by Twemoji: https://github.com/twitter/twemoji
Copyright © 2009-2019 Amin Forums, LLC
Top Bottom