Bristol Harbourside, England at DVinfo.net

Kevin Langdon · April 20th, 2015, 10:35 AM

Andrew Smith · April 20th, 2015, 11:38 AM

Kevin, does the focus in this look right to you?

Andrew

Dave Sperling · April 20th, 2015, 02:15 PM

Quote:

Originally Posted by Andrew Smith

Kevin, does the focus in this look right to you?

Andrew

Unless it's just the youtube encoding, certainly looks too soft here... How does a frame capture look?

Kevin Langdon · April 20th, 2015, 02:25 PM

I am finding there's a definite loss of quality when uploaded to YouTube.

Ivan Mosny · April 21st, 2015, 06:13 AM

Kevin - in my opinion is something wrong with your lens. Definitelly bad loss of shapness near edges. And most time it looks worse on left then on the right side.

Peter Rush · April 21st, 2015, 07:24 AM

Really noticeable at 0:38 - What lens/adapter are you using?

Kevin Langdon · April 22nd, 2015, 01:31 PM

Ivan, I think you may be right about the lens. It appears to be worse on wide shots and better when zoomed in.

I used a Sony 18-105mm OSS F4 lens.

Looking at other videos I've shot using the Sony Zeiss FE 55mm lens, the softness isn't there.

Kevin Langdon · April 29th, 2015, 10:21 AM

Is there anything that can be done if the lens is at fault?

Andrew Smith · April 29th, 2015, 07:15 PM

Yup. New lens.

You're welcome. :-)

Andrew

Kevin Langdon · May 3rd, 2015, 02:09 PM

Following some research, it appears this lens has some distortion problems when used with cameras without 'in camera' correction. Apparently the FS700 had a firmware update to sort the issue. I presume the A7s doesn't have this feature. Does anyone have any more info on this?

Andrew Smith · May 3rd, 2015, 07:37 PM

It's a bit of a concern that a lens has distortion that bad, and requires in-camera correction for it to be able to be usable.

I can always shoot some video footage with my A7II and upload if it helps. I've got the Sony FE 28-70mm lens on it (only $300-ish worth). You might find that the night and day comparative results enough that you wouldn't even mess around with that lens any more.

Andrew

Andrew Smith · May 3rd, 2015, 07:46 PM

Actually, I've got a feeling that the flange distance in the camera mount for the lens will be what is doing this. If this is the case then the idea thing would be to have some sort of adapter. Else, use a crop factor mode when shooting with that lens.

Have a go at this (the crop mode) and see how it works for you.

Andrew

Kevin Langdon · May 4th, 2015, 03:34 AM

Thanks for the info. The FE 28-70mm is a very good value zoom. I'm sure it won't be as good as some of the other FE zooms but they're much higher priced. It could be a good back up to my FE 55mm Prime.
How do you find yours for video?

Andrew Smith · May 4th, 2015, 06:26 AM

Better for video than I was expecting. I've only done a few quick test shots to check out the recording ability and not any serious filming. I actually bought the camera for only shooting stills, having a Sony PMW-300 that I do my video shooting with.

Those more expensive FE mount lenses are made by Zeiss and have better optics. Apparently they are pretty dang impressive and you do get what you pay for. I just haven't had one of them to play with yet.

Andrew

Andrew Smith · May 4th, 2015, 06:45 AM

He's a very rudimentary video that I shot with the camera and lens. I've barely even read the manual. The focus is hunting around but there is enough to give you an indication of the quality.

I've uploaded the raw .mts video file directly to YouTube and the camera would have been shooting video at roughly ASA2000 (based on on-screen feedback in photo mode).

Andrew

April 20th, 2015, 10:35 AM	#1
Kevin Langdon Regular Crew Join Date: Jan 2013 Location: Somerset, England Posts: 120	Bristol Harbourside, England Bristol Harbourside filmed with a Sony A7s - YouTube

April 20th, 2015, 11:38 AM	#2
Andrew Smith Equal Opportunity Offender Join Date: Feb 2009 Location: Brisbane, Australia Posts: 3,016	Re: Bristol Harbourside, England Kevin, does the focus in this look right to you? Andrew

April 20th, 2015, 02:25 PM	#4
Kevin Langdon Regular Crew Join Date: Jan 2013 Location: Somerset, England Posts: 120	Re: Bristol Harbourside, England I am finding there's a definite loss of quality when uploaded to YouTube.

April 21st, 2015, 06:13 AM	#5
Ivan Mosny Regular Crew Join Date: Sep 2007 Location: Poland Posts: 141	Re: Bristol Harbourside, England Kevin - in my opinion is something wrong with your lens. Definitelly bad loss of shapness near edges. And most time it looks worse on left then on the right side.

April 21st, 2015, 07:24 AM	#6
Peter Rush Inner Circle Join Date: Nov 2008 Location: UK/Yorkshire Posts: 2,069	Re: Bristol Harbourside, England Really noticeable at 0:38 - What lens/adapter are you using?

April 22nd, 2015, 01:31 PM	#7
Kevin Langdon Regular Crew Join Date: Jan 2013 Location: Somerset, England Posts: 120	Re: Bristol Harbourside, England Ivan, I think you may be right about the lens. It appears to be worse on wide shots and better when zoomed in. I used a Sony 18-105mm OSS F4 lens. Looking at other videos I've shot using the Sony Zeiss FE 55mm lens, the softness isn't there.

April 29th, 2015, 10:21 AM	#8
Kevin Langdon Regular Crew Join Date: Jan 2013 Location: Somerset, England Posts: 120	Re: Bristol Harbourside, England Is there anything that can be done if the lens is at fault?

April 29th, 2015, 07:15 PM	#9
Andrew Smith Equal Opportunity Offender Join Date: Feb 2009 Location: Brisbane, Australia Posts: 3,016	Re: Bristol Harbourside, England Yup. New lens. You're welcome. :-) Andrew

May 3rd, 2015, 02:09 PM	#10
Kevin Langdon Regular Crew Join Date: Jan 2013 Location: Somerset, England Posts: 120	Re: Bristol Harbourside, England Following some research, it appears this lens has some distortion problems when used with cameras without 'in camera' correction. Apparently the FS700 had a firmware update to sort the issue. I presume the A7s doesn't have this feature. Does anyone have any more info on this?

May 3rd, 2015, 07:37 PM	#11
Andrew Smith Equal Opportunity Offender Join Date: Feb 2009 Location: Brisbane, Australia Posts: 3,016	Re: Bristol Harbourside, England It's a bit of a concern that a lens has distortion that bad, and requires in-camera correction for it to be able to be usable. I can always shoot some video footage with my A7II and upload if it helps. I've got the Sony FE 28-70mm lens on it (only $300-ish worth). You might find that the night and day comparative results enough that you wouldn't even mess around with that lens any more. Andrew

May 3rd, 2015, 07:46 PM	#12
Andrew Smith Equal Opportunity Offender Join Date: Feb 2009 Location: Brisbane, Australia Posts: 3,016	Re: Bristol Harbourside, England Actually, I've got a feeling that the flange distance in the camera mount for the lens will be what is doing this. If this is the case then the idea thing would be to have some sort of adapter. Else, use a crop factor mode when shooting with that lens. Have a go at this (the crop mode) and see how it works for you. Andrew

May 4th, 2015, 03:34 AM	#13
Kevin Langdon Regular Crew Join Date: Jan 2013 Location: Somerset, England Posts: 120	Re: Bristol Harbourside, England Thanks for the info. The FE 28-70mm is a very good value zoom. I'm sure it won't be as good as some of the other FE zooms but they're much higher priced. It could be a good back up to my FE 55mm Prime. How do you find yours for video?

May 4th, 2015, 06:26 AM	#14
Andrew Smith Equal Opportunity Offender Join Date: Feb 2009 Location: Brisbane, Australia Posts: 3,016	Re: Bristol Harbourside, England Better for video than I was expecting. I've only done a few quick test shots to check out the recording ability and not any serious filming. I actually bought the camera for only shooting stills, having a Sony PMW-300 that I do my video shooting with. Those more expensive FE mount lenses are made by Zeiss and have better optics. Apparently they are pretty dang impressive and you do get what you pay for. I just haven't had one of them to play with yet. Andrew

May 4th, 2015, 06:45 AM	#15
Andrew Smith Equal Opportunity Offender Join Date: Feb 2009 Location: Brisbane, Australia Posts: 3,016	Re: Bristol Harbourside, England He's a very rudimentary video that I shot with the camera and lens. I've barely even read the manual. The focus is hunting around but there is enough to give you an indication of the quality. I've uploaded the raw .mts video file directly to YouTube and the camera would have been shooting video at roughly ASA2000 (based on on-screen feedback in photo mode). Andrew YouTube (Short URL)