Letus Extreme GG test

PaPa

Major Contributor
disclaimer: This is not a LEX bash :)

From my last test/observation on the effect of the Fstop on the bokeh, i wanted to figure out if it would be practical to shoot at F4/F5.6 in which would result in the best looking bokeh, not knowing how it would effect the vibrating GG.

Unfortunately, my tests confirmed that although some say you can shoot at F5.6 on the LEX, i find that even at F4, my eyes attention is focused to the GG pattern that is visible. Perhaps to some, this is not an issue, but for others it may surely well be one that will disable them from shooting at anything more closed than F4. And the batteries were fresh.

The issue of shooting against any sort of white/sky pattern will result in the GG being more visible. But my test was to see at what point does the GG become apparent under these conditions, which for me will inevitably be shot at one point or another during upcoming projects.

I shot against a cream/offwhite door that was then made more contrasty in post to really observe the behavior of the GG pattern under different effects of Fstop.

I don't know if anyone will benefit from this, but i for one know my restrictions for upcoming shoots.

For the test, i shot using the XH A1, a 50mm lens at F5.6, F4, F 2.8, F2, F1.4.

I look forward to the upcoming SGblade that may save many issues amongst 35mm adapter users. With the Glass element, one should expect the same light loss as the extreme, with very similar properties and bokeh ( as i am to imagine ) Which i am under the impression will not be the Sgpro bokeh we all know and love, but will at least allow the user to stop down without worrying about the GG becoming visible, which will then allow a much more pleasing and film like bokeh to render out of the image.

cheers!

http://www.vimeo.com/1172632

download : http://www.tassweb.com/papa/GGtest.mp4
 
Last edited:
thanks for the test koli, but the grain at those f stops are pure unexceptable to me for the price of the adapter.
 
f5.6 seems fine to me, didn't even noticed it. I've shot at that f-stop and few times and the footage came out fine.

reem12, there's really no grain produced from the adapter. Looks like the footage was lit with just ambient light, might account for it.
 
that is exactly it. The purpose of this test was to give soft light across a pale surface and see at what point the GG becomes destracting.

As i noticed, at F5.6 i could clearly see the GG. Over different surfaces it is not as easy, perhaps i am just being picky but this amount of visible GG is not something i want in my footage. So i will limit myself to F2.8 and F4. If the surface is too pale or too bright, i will have to run more tests to see if F4 is acceptable for my standards.
 
Wow. Never noticed it at 5.6 but I'll have to re-test mine. I wonder if they're all the same in that respect. I mostly shoot bet 2.8-4.0. 4.0 for exteriors.
 
F4 is still relatively safe, but i definitely see it at 5.6. It's a shame cause the 5.6 bokeh is by far the best.
 
this shot was taken at F4. and although it is static i didn't see any patterns on the wall behind me when it was taken. Thats good news. So i guess i know the limit.

tableshotsx0.jpg
 
Back
Top