The camera does have 4 Hyper Gamma settings(Similar to the previous Cine Gamma on the EX) and two of those go to 109% but it does NOT have "a S-LOG type of gamma". Allister's review states a little over 11 stops of dynamic range.
Sony July 26th
- Thread starter krost-audiovisual
- Start date
The camera does have 4 Hyper Gamma settings(Similar to the previous Cine Gamma on the EX) and two of those go to 109% but it does NOT have "a S-LOG type of gamma". Allister's review states a little over 11 stops of dynamic range.
cowpunk52
Veteran
The EX1 does ramp down to 2.8 when fully zoomed in, it just doesn't tell you that that's happening. From Adam Wilt's 2008 review of the camera:
"The maximum aperture of f/1.9 holds until about 10mm, then ramps gradually down to f/2.8 at full tele. This ramping is not shown in the camera’s displays; it thinks it’s still at f/1.9 (maybe it is still at f/1.9; the transmitted light, however, decreases by a stop, and at full tele the iris can be turned between wide open and f/2.8 with no change in the levels). If you’re shooting wide open, bear this in mind."
source: http://provideocoalition.com/index.php/awilt/story/review_sony_pmw_ex1_1_2_3_cmos_hd_camcorder/P3/
KINOKS
Well-known member
Yes, I read that. Did he mention what gamma he was using?
Anyway it's not S-LOG but you still get nicer highlights rolloff and more dynamic range.
I believe he said HG 4
hempo22
Active member
thanks for that info! I've never set the cameras to anything faster than 2.8 anyway when shooting multi cam setups, but it's still good to know! do you know if this is the case with the EX1r/EX3 as well?
Learned something new. Thanks. I'll have to take a closer look at the camera.
So I guess the Canon XF300 is about on par with the Sony EX1 & probably with the PMW-200, but the HPX250 is still going to lose in the lose of light competition.
Bassman2003
Veteran
I don't think the competition is being correctly reported here. The longer lenses ramp. if the EX had an 18x oe 22x I bet it would ramp even more than it does already. It would be best to compare the three cameras at like 6x zoom to give an equal representation. Pretty sure the XF300 while having a superb image (I like it better then the EX) will the slowest of the three. I know it is slower than the EX series.
cowpunk52
Veteran
Both the XF300/305 & the HPX250 lenses start at an f/1.6 at the widest end, vs the Sony's f/1.9; so they both are half a stop faster at the widest end. The XF cams ramp to 2.8 over 18x, while the HPX250 ramps to 3.2 over 22x, vs the Sony's ramp to 2.8 over 14x. Based on this, I think it's fair to infer that the Canon and Panasonic lenses are likely 1/2 to 1/3 stop faster than the Sony at any equivalent zoom range.
Of course, the Sony's pick up a stop of sensitivity thanks to the 1/2" sensor size. But the XF cams pick up an extra stop when shooting in 720p mode due to it's interlaced downscaling method. Not sure if the Panasonic or Sony offerings do the same.
Overall, they all have important pro's and con's, and are likely roughly similar in sensitivity & SNR when all elements are taken into account - with the Sony likely just slightly edging out the other two in that category.
LanceOregon
Well-known member
That, plus the fact that in their press releases Sony is making a big deal over the new 1/2 inch Exmor sensors in the PMW-200. They seem to imply that these sensors will set a new standard for performance. We will have to wait for some sample video, though, before being able to judge whether their claims have anything behind them, or are just marketing hype.
kittykatro
Active member
Where exactly in the press release does it say that this camera has a new sensor?