Forgot Password
Pentax Camera Forums Home
 
Log in or register to remove ads.

Third-Party Pentax Lenses - Reviews and Database » Russian and Zenitar Lenses » Prime Lenses
Rubinar  makro 500mm F8 Review RSS Feed

Rubinar makro 500mm F8

Sharpness 
 8.0
Aberrations 
 8.0
Bokeh 
 7.0
Handling 
 7.0
Value 
 9.0
Reviews Views Date of last review
1 6,578 Wed August 23, 2023
spacer
Recommended By Average Price Average User Rating
100% of reviewers $70.00 9.00
Rubinar  makro 500mm F8

Rubinar  makro 500mm F8
supersize
Rubinar  makro 500mm F8
supersize
Rubinar  makro 500mm F8
supersize

Description:
The Rubinar 500mm f8 mirror is a more modern in character design than the MTO/3M-5A maksutov. The original lens manual that came with the one in the pics gives DoM 22/05/1995 so these are well post Soviet times. The logo is for LZOS Lytkarino Optical Glass Factory:
"This factory, located in the south of Moscow, provided a lot of things, mainly for military purpose (laser, nightvision stuffs). In civil domain, LZOS provided lenses for Kiev mount (Jupiter-12, Jupiter-9), but also M42 mount (Undustar-61 L/Z, Volna-9...), and catadioptric lenses (mirror lenses) like the MTO or ZM.
You can see in the logo the stylised letter Л (L in russian), the O, and C (S in russian).."Pierre Tizien.
NOTE that these mount easier on dslr's with a nose than many of the the MTO's etc - smaller diameter and the mount is slightly proud of the lens base (no problem on a K3). Also that the mount is just a plate held on by 4 screws, so if a mount swap is contemplated that is very easy to DIY.
Contributors to eg mflenses.com have noted that releasing the tension in the mount screws can improve the performance of these rubinars.

Rubinar also made an f5.6 version.

Optics: mirror
Mount: M42 normally
Focus: ~320° rotation, anti-pentax. Focus past infinity is normal.
CFD 2.2m (1:4)
Filter: 77mm
weight: 520g

Russian optical factory logos.

Review by ixtblabs.

Review of this lens and other 500mm by Mr Pentacon Six.

Rubinar 500mm f8 vs tamron 500mm f8 by Dr Klaus Schmidt - flickr album
Mount Type: M42 Screwmount



Add Review of Rubinar  makro 500mm F8
Author:
Sort Reviews by: Date | Author | Rating | Recommendation | Likes (Descending) Showing Reviews 1-1 of 1
New Member

Registered: August, 2023
Location: Mecklenburg-Vorpommern
Posts: 5
Review Date: August 23, 2023 Recommended | Price: $70.00 | Rating: 9 

 
Pros: very lightweight, rather sharp, works handheld with good light, smooth focus, small minimum distance
Cons: manual focus, takes practise, shallow depth of field, bokeh is donut (this is taste)
Sharpness: 8    Aberrations: 8    Bokeh: 7    Handling: 7    Value: 9    Camera Used: Pentax K3   

Got this lens used and thought it worth trying. Overall it's a keeper. What do I use it like:
- put the camera on "catch in focus" (use a straight metal adapter without paint for this to work)
- set ISO high enough to get at least 640's and better
- use shake reduction (if not on a tripod)
- use it in sunshine
- adjust automatic exposure down because images tend to be too bright.


The reason I gave handling a 7 is because it is manual. Other than that it handles fine with a smooth and fast focus. using "catch in focus" gives me better results than pure manual focus. In some conditions I switch it off though to be able to shoot faster or where the autofocus is disturbed by something.
For processing the photos I do the following in GIMP:
1) Adjust contrast and lighting (exposure, blackness)
2) Use G'mic-QT with "sharpen (deblur)". This filter is optimized for mirror lenses. Raise smoothness though to avoid artifacts. Do this on an extra layer.
3) On another copy of the pre-sharpened layer use normal sharpening with unsharp mask
I will not describe here, how to work with layers while sharpening, that would lead too far.

With this I get quite nice results even though it rarely will work for a 100% crop.

With the setup described I successfully shoot flying birds ;-)

I'll upload some pics for you to see. The stork is sharpened and un-sharpened for comparison. The lapwings are a 50% crop.

Add Review of Rubinar  makro 500mm F8



All times are GMT -7. The time now is 07:01 AM. | 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