takengo2003
Deregistered
anyone find the 7D video jerky on computer.
EOS 7D user,information sharing thread.
- Thread starter KHC
- Start date
Your computer is too weak to play Full HD. Upgrade your computer. Your HD disk IO cannot handle the data rate. For now, most people use SSD to play Full HD content. For my notebook, I create a 4GB RAM disk and load the video there to play....as smooth as silk.
takengo2003
Deregistered
what software you use to play full hd video? i am using quicktime, realplayer, all jerky.
but i can play those 7d video smoothly posted by others in web when i google 7d video.
so i wonder is it because of the player. is quicktime and realplayer capable of playing full HD video?
Those posted on the web has already been compressed. I use quicktime to play without any jerk. Create a 4GB Ram disk, load the video there and play....will be as smooth as silk!
takengo2003
Deregistered
how to create a 4gb ramdisk, my pc only running 2gb ram. you men there is a software setting on quicktime to set 4gb? what is your quicktime version.
Try using ZoomBrowser!
Oh, my windows have 8GB of RAM....:bsmilie: So When I want to watch the HD videos I will allocate 4GB of RAM for that purpose.
You can buy the software here : http://www.superspeed.com/desktop/ramdisk.php
Last edited:
takengo2003
Deregistered
i have downloaded it free from http://www.mydigitallife.info/2007/05/27/free-ramdisk-for-windows-vista-xp-2000-and-2003-server/ , how come you need to buy?
anyway, i think i need to upgrade my ram first.
Cos my OS is 64bit...that version is only for 32bit OS.
cyquek
Senior Member
I got the 7D when it was first released and was one of the unlucky ones who had MAJOR AF problems with that camera.
CSC tried to calibrate the camera but I am not sure how thorough they were. The entire calibration procedure can take DAYS especially when multiple zoom lenses are involved as outlined here. They usually try to cut corners and that link I just provided explains why.
Anyway, I finally gave up on the whole CSC calibration thing after going back and forth 5 times for more than a month. I asked for a replacement and CSC graciously acquiesced to my request. The replacement is from the latest batch of 7D from Japan.
I can confirm AF of the replacement is a drastic improvement from my original copy.
Sensor performs slightly better at low ISO and slightly poorer at very high ISO (6400 etc), as compared to my first copy. Couldn't be happier. :bsmilie: It is also free from low ISO banding (see here for example).
AF is NOT perfect though as compared to my el cheapo 450D: area AF for flat distant subject is iffy. Also, there is also some slight non-linearity in the 'gain' adjustment wrt subject distance (slightly back-focus near minimum focusing distance)... but MUCH better than my original copy after CSC calibration. Also, 'gain' adjustment wrt to different focal lengths in my zoom lenses works VERY well, so any micro-adjustment setting at the tele end works just as well at the wide end.The last point is an indication of a relatively well calibrated AF sensor (see here for details) since my primary zoom lens was perfectly calibrated to my 450D body.
If you plan to only use ONE camera body and multiple lenses, I strongly recommend you bring ALL your lenses to CSC and request for them to be calibrated for that one body. Seems like CSC does much better when they adjust lenses to body than vice versa. The fact that lenses need to be perfectly matched to EACH camera body is also discussed in detail at this website maintained by a lens rental shop. Since I am holding on to two camera bodies (one with and one without AF adjustment), I am willing to make some sacrifices.
Serial number of replacement is 0430xxxxxx. The serial numbers of early batches start with 02... I understand that even some cameras with serial numbers starting with 03... are problematic as experienced by another unfortunate owner here. In short, avoid cameras with early serial numbers: they either have problematic imaging or AF sensors.
Hi All
Was thinking of changing to the 7D. SLRR 7Ds serial numbers are 05 onwards. So far anyone with 04/05 serial numbers having any problems?
Thanks
hobbit6003
Senior Member
My 1st body has a serial number started with 2 and it indeed had AF problem. Currently, this body I have has a serial number that starts with3, and the improvement in AF is significant, so far no complain.
Fellow 7D owners..Quick Question. When you turn on the Cam do you hear a squishing noise (dont know how exactly to describe it but there its audible and happens when it does the sensor cleaning). I thought it was normal but then i read on some forum that it should be absolutely silent when it does this. Can anyone confirm,else i've to take it to the CSC.
NovJoe
Senior Member
7D needs to do a pre fire of its onboard flash in order to trigger the rest if you want to do wireless flash commander. If not, you can mount the 580EXII as master to trigger. If not, you need a wireless trigger.
NovJoe
Senior Member
It is normal. Sensor cleaning. I had mine squishing as well during cleaning time. Where do you find the silent cleaning information?
Similar threads
