|
|||||||||
|
Thread Tools | Search this Thread |
December 4th, 2006, 07:11 PM | #1 |
Regular Crew
Join Date: Mar 2006
Location: Greece
Posts: 58
|
SGpro r.2 - Bokeh quick test
Hello guys,
i've just made a very quick bokeh test with this combo: HVX200E SGpro r.2 Nikon 50mm f1.2 (@f1.4) H264, 24.5mb It's just one shot with cristmass lights as subject. http://www.sgpro.co.uk/lights.mov Any comments would be great! thanks a lot, theodoros |
December 4th, 2006, 08:51 PM | #2 |
Major Player
Join Date: Jun 2006
Location: St. Pete, FL
Posts: 223
|
Bokeh looks great. Focusing on the lights might've helped to see the relative light loss. What was the lighter area to the left of the tree/lights? What ambient light was there?
|
December 5th, 2006, 03:16 AM | #3 |
Regular Crew
Join Date: Sep 2006
Location: Paris, France
Posts: 75
|
Very nice, Theodoros. Could you please make a test ? Could you put the camera on tripod and close down the prime lens, to see how the adapter behave with grain and high-speed shutter ?
Thanks, Kristin |
December 5th, 2006, 10:39 AM | #4 |
Major Player
Join Date: Nov 2005
Location: Tartu, Estonia
Posts: 579
|
All this was shot @ f1.4?
Incredible to say a least. BTW after all my involvement with CINEDOF I`m really considering buying SGpro for commercial HD work in Europe. Got to know the (FOV) crop factor and light loss first. Sharpness from edge to edge? Any toughts? Thanks in advance, T |
December 5th, 2006, 10:43 AM | #5 |
Major Player
Join Date: Jun 2005
Location: Brighton, East Sussex, UK
Posts: 938
|
Toenis,
The SGpro uses full 36x24mm frame for SLR lenses. Lightloss is approx. 1 stop. The image was much brighter then with the m2 when it was tested with an HD100 Edge to edge sharpness is even across the frame with the new r2 achromat. Please see early res chart: http://www.sgpro.co.uk/FX1e_SGpro_r2_res%20chart.tif
__________________
Thanks, Wayne. |
December 5th, 2006, 12:35 PM | #6 |
Major Player
Join Date: Nov 2005
Location: Tartu, Estonia
Posts: 579
|
Wonderful.
One thing that bothers me is why grabs from "public house" clip from www.sgpro.co.uk site doesn`t exhibit that nice bokeh. Why is that? Thanks in advance, T |
December 5th, 2006, 01:31 PM | #7 |
Major Player
Join Date: Jun 2005
Location: Brighton, East Sussex, UK
Posts: 938
|
Although I personally think the bokeh of that grab is good, it was taken with the prototype r2 GG disk. The production GG disks have slightly more diffusion then the prototype, resulting in 'harder' bokeh rendition.
__________________
Thanks, Wayne. |
December 5th, 2006, 05:36 PM | #8 |
Trustee
Join Date: Aug 2006
Location: London UK
Posts: 1,939
|
really nice clip!
|
December 5th, 2006, 07:41 PM | #9 |
Trustee
Join Date: Feb 2006
Location: Niagara Ontario Canada
Posts: 1,121
|
That chart looks amazing! Nice job Wayne.
|
December 6th, 2006, 04:47 PM | #10 | ||||
Regular Crew
Join Date: Mar 2006
Location: Greece
Posts: 58
|
Quote:
The lights was on a table and the only other light source was a 60w bulb, 2 meters above the christmass lights. Quote:
Quote:
Quote:
|
||||
December 8th, 2006, 01:36 AM | #11 |
Inner Circle
Join Date: Nov 2005
Location: Elk Grove CA
Posts: 6,838
|
Okay, so I am knew to the Bokeh discussion. So what makes good or bad bokeh. For instance here is a grab from my Micro 35 DIY with my FX1. does this demonstrate good or bad bokeh....
Note, I forgot camera had autogain on so it was probably pushed to 12.
__________________
Chris J. Barcellos |
December 8th, 2006, 02:20 AM | #12 |
Trustee
|
Chris (and everyone),
There is lots of discussion in the photography realm as to what makes good bokeh, but there is definately disagreement between what is pleasing or displeasing. Ultimately it is a matter of preference. I prefer harder bokeh while others prefer what has gaussian dropoff or something like that. It is whatever is pleasing to you that I think is important to achieve.
__________________
BenWinter.com |
December 8th, 2006, 05:15 AM | #13 |
Major Player
Join Date: Jun 2005
Location: Brighton, East Sussex, UK
Posts: 938
|
Very true, it is a subjective opinion, but mostly the photography realm are talking about the bokeh produced by the lens. In the 35mm adapter realm, we are mostly talking about the adapters (or more its ground glass) ability to capture/render that bokeh so that it looks identical to how it would be if shot directly to film. I think its important to seperate these two in our minds as they are not the same thing. In fact, its probably the wrong term refering the GG's ability to render it as 'bokeh'.
__________________
Thanks, Wayne. |
December 8th, 2006, 10:06 AM | #14 |
Major Player
Join Date: Jun 2006
Location: St. Pete, FL
Posts: 223
|
Chris, I found this article on bokeh. I prefer what the article calls "neutral bokeh".
|
| ||||||
|
|