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PostPosted: Tue Sep 30, 2014 2:36 pm    Post subject: Reply with quote
woodrim wrote:
I forgot to mention how sensitive the focusing is - I can see the image going into and out of focus with the very slightest movement of the focus ring. I am certain that I would get virtually no in-focus images if I was still using my A200 with optical viewfinder without focusing aids. I may find it just too challenging in the field. I'll keep looking for the right Rubinar, but may experience the same focusing challenges.

What I did not yet mention is that the lens is quite nice otherwise. It is barely bigger than my 50mm Rokkor, very light, and the focus ring moves like silk.

This is the reason why I suggest using an adapter with a tripod mount. By adding a small quick release plate to the adapter and use your to support the plate(instead of the lens). This will help avoid touching the focus ring after you focus.


PostPosted: Thu Oct 02, 2014 4:49 pm    Post subject: Sample shots tamron 350mm Reply with quote




PostPosted: Thu Oct 02, 2014 5:46 pm    Post subject: Reply with quote
That Tamron seems better.


PostPosted: Sun Oct 05, 2014 4:24 pm    Post subject: Reply with quote
I finally had a good day to test the lens further. This time I used ISO100 and it was bright enough to still have fast shutter speeds, a necessity. This experience reinforced what I saw earlier in how critical is the focus. This is apparent in the first picture where I had used magnification to focus on one of the middle stalks, then composed the picture. It seems that little movement resulted in the perfect focus moving to the left stalk where the thorns are sharper. Naturally, the farther away the subject, the less critical this will be. These picture show that the sharpness can be good if you are skilled enough to nail it. Maybe it is no different than other such lenses in that regard. Still, I think the Tamron, and certainly the Rubnar are better lenses. I was tracking a Rubinar 300mm recently that sold for nearly $1000. The 5.6/500 is much more reasonably priced, but the added focal length combined with the same f/5.6 must make it at least as difficult to focus if not more so.

I will be offering this lens up for sale because I know it is not conducive to my style of photography. I prefer to handhold and won't be happy if the focus is not dead-on. If anyone is interested in this lens for cheap, send me a PM.







PostPosted: Sun Oct 05, 2014 4:45 pm    Post subject: Reply with quote
I would not suggest the Rubinar 300mm. It is hard to focus it at close distance as the DOF is razor thin. Focusing with the Tamron is much more easy with the adjustable tripod mount on a NEX.

P.S. You can sell this lens for at least $100+ to finance for your future purchase.


PostPosted: Sun Oct 05, 2014 5:11 pm    Post subject: Reply with quote
calvin83 wrote:

P.S. You can sell this lens for at least $100+ to finance for your future purchase.


I will include shipping for that price - for MFL members.


PostPosted: Sun Oct 05, 2014 5:34 pm    Post subject: Reply with quote
woodrim wrote:
calvin83 wrote:

P.S. You can sell this lens for at least $100+ to finance for your future purchase.


I will include shipping for that price - for MFL members.

This is a good news for MFL members. Smile


PostPosted: Sun Oct 05, 2014 11:37 pm    Post subject: Reply with quote
I went out today since we have a very bright, sunny day. All hand held at ISO100. Where I did get the focus right, it seems good. Wild and crazy bokeh.

















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