bamigoreng
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Posts posted by bamigoreng
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19 minutes ago, Grim Fandango said:
Then you will have literally no problem proving that! Get two cameras with different size sensors, stick two lenses on the front of them set to the same f-stop number, and try to take identical photographs with them. When you give up because the bokeh in one is far more out of focus than the other for the same frame, apply my formula and then take those same photos. Or just watch the video I posted above where they perform that precise test.
Btw, background blur (bokeh) = physical aperure size and focus distance
DoF = focus distance, f-stop and focal length
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40 minutes ago, Grim Fandango said:
The F-Stop number is a ratio, between the focal length and the aperture, so if you have a 100mm lens with an aperture opening of 50mm, it is set to f2.0.
But a 100mm lens that covers a full frame sensor and a 100mm lens that covers a m4/3 sensor are very, very different to each other, despite sharing those two common measurements. The difference in designs manifest in the size of the image projected by the lens. The aperture blocking certain angles of light reaching the sensor is the same, thus the out of focus areas will be the same amount out of focus, but your 100mm lens on a m4/3 lens will show a much narrower DOF - as you so correctly point out. So to achieve the same frame as the full frame, you actually need to mount a 200mm lens on the full frame. What happens, the DOF changes because to maintain f2, your aperture is now 100mm wide, blocking far less of that light coming in.
Therefore, you cannot achieve the same picture. In order to do that, you will need your 100mm to open up more, in this case, also to 100mm diameter - f1.
So you see, for any particular picture, you cannot recreate it by matching the lens numbers and plopping it on any old sensor (we all understand this) not can you only multiply the focal length crop factor (becuase the out of focus character is different) but if you want to achieve the same look, you have to also apply your crop factor to the f number, your lens needs to be faster for the crop sensor to achieve the same shot.
Thus when comparing two lenses for the same sensor, one a lens designed for that crop frame sensor, and one a full frame lens with a speed booster, not only is that speed booster concentrating the light, increasing it's brightness on the smaller lens (F2.8 becomes an F2), but you are bringing the full frame characteristics of the lens to that crop sensor efectively making that sensor a full frame. Therefore to achieve the same look that the full frame lens brings, you need to use that crop factor on the aperture too for the crop lens (which remember is not going through a speed booster).
Smaller format lenses have exactly the same light gathering capabilities as larger format lenses at the same f-stop, for their native sensor sizes - link:
https://photographylife.com/sensor-crop-factors-and-equivalence
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11 minutes ago, DPStewart said:
No. I am a PLUS member and that tab where we select a pre-determined stream quality has been removed.
In the email exchange shown in the first post you can see that they are aware they did that, and that they are to some degree proud of it.
Now I cannot yet confirm if European Vimeo users are seeing anything differently.Well, selector is still there. Europe; 'ordinary' member.
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I've put HDTV/FX 1/2 filter (and Glimmerglass 1) under Marumi DHG, Multi coated clear filter. It doesn't help.
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Wowzahs. Those are the better kind of deals. Good tip! Thanks. They only allow a very select few items to be shipped outside of Germany (or to Austria) it seems though... but I've been interested in the 77mm Smoque 1 and for EUR 29,98 incl. shipping, I'm going to find out of that really does add atmosphere. I'm not one to go ahead and take fog machines with me everywhere, you know.
Yeah, pretty pricey. :-) Paid 16 EUR (Avides) for 52mm Glimmerglass 1 - lowest density and 26 EUR for HDTV/FX 1/2 filter.
Unfortunately, they don't sell 52mm UltraContrast 1 or 2, only UC 4: http://www.amazon.de/gp/offer-listing/B001U3ZVBY/ref=dp_olp_new_mbc?ie=UTF8&condition=new
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I have a GH4 and EM5ii with Panasonic lenses 12-35, 14-140 and Leica 25, all with 58mm threads so I could use the filter on all of them. Based on experience. What filter would people recommend to make the lens/camera combinations mentioned look more filmic and easier to grade and less digital?
All advice greatly received
Thanx B.
Tiffen HDTV/FX 1/2 58mm - EUR 11.32 (+ UK shipping c. EUR 9.99; AVIDES, via Amazon.de): http://www.amazon.de/Tiffen-Filter-58MM-HDTV-FILTER/dp/B001U8888M/ref=sr_1_69?ie=UTF8&qid=1454358161&sr=8-69&keywords=tiffen+filter+58mm
- Cinegain, boxtree and Zach Goodwin
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The HD/TV FX filter officially shipped, found out why it took such a long time: It was a specific customized item.
Size and density?
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Tiffen HDTV/FX, Glimmerglass, UltraContrast - link: https://***URL not allowed***/beauty-filter-test-6-cameras-18-filters-to-enhance-digital-on-skin/
Edit: + http://vimeo.com/96143464
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In Premiere Pro: Stretch (to the right) with Selection Tool Option, Speed/Duration Option or Rate Stretch Tool Option.
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Grain - free DL: http://www.vision-color.com/free-stuff/
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I checked a little on the tiffen filters but couldn't find a good comparison between the contrast levels. I only want to pick up one and would have gone with the 3 or is there a other one that you would recommend me more?
Test:
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If your footage has a lot of scene changes or rapidly moving motion then the overall image quality may benefit from a lower key frame distance. Default sett. for 2.048x1.152 is 72. Too high.
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The best 1080p export settings for YT (Adobe Pr)? - link: http://maisemassa.com/2015/10/13/the-best-1080p-export-settings-for-youtube-with-adobe-premiere-pro-or-an-overkill/
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Well, prepare to be slightly disappointed. I guess I should've read up on this more, but it actually doesn't do servo AF at 1080/60. It'll do it at 1080 24fps and 30fps, and 720 60, but not 1080 60. I am a little annoyed because while this is somewhat documented around the web, it doesn't appear to be on the specs list of B&H.
Alas...maybe in a firmware update. Initial impressions are good though. Nice to have a camera that actually responds quickly when I press any button.
Yep, 60p/50p - no Dual Pixel AF and Servo focus mode: http://***URL removed***/reviews/canon-eos-7d-mark-ii/14
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Just for fun, I'm gonna guess he's keeping the:
A7S II because it's the hottest camera right now and it is the leader in low light capabilities.
GH4 because of its reliability and how it has become a standard in the industry.
NX1 because you never know what update may come that changes the game
5D3 because of Canon lenses and EOSHD heritage.
+ RX100 M4
+ Fujifilm X-T1
+ GH2
5D3 was sold. (?)
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Cool. I have the Benro monopod that is shown in your youtube video. I'm pretty happy about it.
The only flaw is that the backplate is quite tricky to fasten properly together with a Nikon D800. The tightening screw jams into the camera body and it doesn't get properly tightened. But it's still great for traveling around light while getting nice stable footage.
You can adjust the tension (2:45 ).
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or maybe they make a living out of it.
Heh, zadetek v polno.
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Absolutely amazing review.
all reviews are the same and here we get some real info. I am so happy I got the A7r2 instead. But it has a non acceptable issue as well that I will describe in another post.
Edit: Found it.
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Hi,
on my blog there are many test on youtube bitrate and quality.
Upload your video in 1440p and NOT in 720p or 1080p... 2K resolution boost bitrate x3 in youtube transcoding process!Youtube Best Settings Guide: Uprez your video to 1440p take advantage of the higher bit rate boost
My youtube video download test (h264 and Vp9):
Test video quality 720p 1080p 1440p 2160p max bitrate which compresses youtubeFor other resolution:
Best Youtube export settings for 720p 1080p 1440p 2160p
for 4K 25mbits is ideal... for 2K 20mbits... best h264 encoder is MEGUI: high quality h264 file... for vp9 media encoder with webm premiere pluginThanks.
Lenses
In: Cameras
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