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Bracketing issue - Page 2

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Posted: Sun Mar 13th, 2016 14:18

11^th Post

Eric

Joined:	Wed Apr 18th, 2012
Location:	United Kingdom
Posts:	4572
Status:	Offline

Robert wrote:
Sorry, didn't realise you had two grip heads, although while it may be difficult to align on the subject, anything which raises the body above the tripod head will increase the leverage at the head and allow at least some deflection. There must be some deflection (wobble?) there, else there would be no blurred image?

I hadn't realised the D750 was a small FX body, this is why I want a D3, I have to say I'm not very familiar with the latest Nikon bodies. I will embrace the weight and 'low' pixel count of the 'old' and heavy D3 body for the benefit of improved stability and lack of fussiness gained.

I use a hydraulic video head on my heavy tripod, that is pretty well rock solid and any movement there is, is well damped. I would use a heavier, larger video head if I could find one I can afford.

Final thought... Was your tripod stood on carpet? My heavy tripod has spiked feet, I always stamp the spikes well into the ground before taking photographs, carpet or a soft (wood) floor could well account for minor vibrational movement. No matter how solid the tripod, it needs a rock solid foundation, pun intended.

Rubber feet on wood floor...suspect client might have objected to the spikes in her £90k kitchen. Yup...£90k. Crazy.

I wonder if the lack of the pro damping in the D3 Is the issue here. I seriously don't think it's the tripod head, despite it being a grip head. Bear in mind it's tension has been wound up so high it would take my Mamiya on its side ...without it sinking. I haven't had the strength to reduce the grip, since going digital. Lol it's very firm.

I will do a test when I get a minute to lay this ghost.

____________________
Eric

Posted: Sun Mar 13th, 2016 14:54

12^th Post

Robert

Joined:	Sun Apr 1st, 2012
Location:	South Lakeland, UK
Posts:	4066
Status:	Offline

Eric wrote:
Robert wrote:
Sorry, didn't realise you had two grip heads, although while it may be difficult to align on the subject, anything which raises the body above the tripod head will increase the leverage at the head and allow at least some deflection. There must be some deflection (wobble?) there, else there would be no blurred image?

I hadn't realised the D750 was a small FX body, this is why I want a D3, I have to say I'm not very familiar with the latest Nikon bodies. I will embrace the weight and 'low' pixel count of the 'old' and heavy D3 body for the benefit of improved stability and lack of fussiness gained.

I use a hydraulic video head on my heavy tripod, that is pretty well rock solid and any movement there is, is well damped. I would use a heavier, larger video head if I could find one I can afford.

Final thought... Was your tripod stood on carpet? My heavy tripod has spiked feet, I always stamp the spikes well into the ground before taking photographs, carpet or a soft (wood) floor could well account for minor vibrational movement. No matter how solid the tripod, it needs a rock solid foundation, pun intended.

Rubber feet on wood floor...suspect client might have objected to the spikes in her £90k kitchen. Yup...£90k. Crazy.

I wonder if the lack of the pro damping in the D3 Is the issue here. I seriously don't think it's the tripod head, despite it being a grip head. Bear in mind it's tension has been wound up so high it would take my Mamiya on its side ...without it sinking. I haven't had the strength to reduce the grip, since going digital. Lol it's very firm.

I will do a test when I get a minute to lay this ghost.

Nothing worse than fussy clients! Rubber, flexible rubber? Mmmm.

As you say the D3 is so smooth I can't see that vibrating.

____________________
Robert.

Posted: Sun Mar 13th, 2016 17:05

13^th Post

Joined:	Sun Apr 1st, 2012
Location:	Carthew, Cornwall, United Kingdom
Posts:	6987
Status:	Offline

Robert wrote:
Eric wrote:
Robert wrote:
Sorry, didn't realise you had two grip heads, although while it may be difficult to align on the subject, anything which raises the body above the tripod head will increase the leverage at the head and allow at least some deflection. There must be some deflection (wobble?) there, else there would be no blurred image?

I hadn't realised the D750 was a small FX body, this is why I want a D3, I have to say I'm not very familiar with the latest Nikon bodies. I will embrace the weight and 'low' pixel count of the 'old' and heavy D3 body for the benefit of improved stability and lack of fussiness gained.

I use a hydraulic video head on my heavy tripod, that is pretty well rock solid and any movement there is, is well damped. I would use a heavier, larger video head if I could find one I can afford.

Final thought... Was your tripod stood on carpet? My heavy tripod has spiked feet, I always stamp the spikes well into the ground before taking photographs, carpet or a soft (wood) floor could well account for minor vibrational movement. No matter how solid the tripod, it needs a rock solid foundation, pun intended.

Rubber feet on wood floor...suspect client might have objected to the spikes in her £90k kitchen. Yup...£90k. Crazy.

I wonder if the lack of the pro damping in the D3 Is the issue here. I seriously don't think it's the tripod head, despite it being a grip head. Bear in mind it's tension has been wound up so high it would take my Mamiya on its side ...without it sinking. I haven't had the strength to reduce the grip, since going digital. Lol it's very firm.

I will do a test when I get a minute to lay this ghost.

Nothing worse than fussy clients! Rubber, flexible rubber? Mmmm.

As you say the D3 is so smooth I can't see that vibrating.

£90k guuuulp!

D3S is better yet as it has Quiet mode which reduces mirror flap and shutter noise. However both D3 and D3S can mirror lockup which is better yet.

____________________
Still learning after all these years!
https://nikondslr.uk/gallery_view.php?user=2&folderid=none

Posted: Sun Mar 13th, 2016 22:31

14^th Post

TomOC

Joined:	Wed Apr 11th, 2012
Location:	Sausalito, California USA
Posts:	616
Status:	Offline

Eric-

The only other possibility that comes to mind is this - are you using auto focus?

Seems to me that auto focus plus changing exposure while bracketing could give you some issues? Never really tested this but always felt that the auto focus and changing aperture and/or shutter speed was weird.

Haven't been in forums much lately...Hi to all of you guys/gals

Tom

____________________
Tom O'Connell

-Lots of people talk to animals.... Not very many listen, though.... That's the problem.

Benjamin Hoff, The Tao of Pooh

Posted: Mon Mar 14th, 2016 02:55

15^th Post

Robert

Joined:	Sun Apr 1st, 2012
Location:	South Lakeland, UK
Posts:	4066
Status:	Offline

Hi back Tom, nice to see you.

The AF thing could be worth looking at too, good point. There are so many things happening in the process of taking photographs nowadays, some are forgotten.

____________________
Robert.

Posted: Mon Mar 14th, 2016 09:16

16^th Post

Eric

Joined:	Wed Apr 18th, 2012
Location:	United Kingdom
Posts:	4572
Status:	Offline

TomOC wrote:
Eric-

The only other possibility that comes to mind is this - are you using auto focus?

Seems to me that auto focus plus changing exposure while bracketing could give you some issues? Never really tested this but always felt that the auto focus and changing aperture and/or shutter speed was weird.

Haven't been in forums much lately...Hi to all of you guys/gals

Tom

Hi Tom
I fix aperture and let bracket vary shutter speed...so I wouldn't have expected any refocusing.

This is only the second time I used the D750 in this sort of situation and never looked at the first shoot results this deeply.

____________________
Eric

Posted: Mon Mar 14th, 2016 09:35

17^th Post

Eric

Joined:	Wed Apr 18th, 2012
Location:	United Kingdom
Posts:	4572
Status:	Offline

I haven't noticed this effect previously, despite using the same technique, same tripod, same lens. The only difference is the camera.

It does point to either better damping in the D3 or an artefact of the extra pixels in the D750.

____________________
Eric

Posted: Mon Mar 14th, 2016 09:37

18^th Post

Eric

Joined:	Wed Apr 18th, 2012
Location:	United Kingdom
Posts:	4572
Status:	Offline

jk wrote:
Robert wrote:
Eric wrote:
Robert wrote:
Sorry, didn't realise you had two grip heads, although while it may be difficult to align on the subject, anything which raises the body above the tripod head will increase the leverage at the head and allow at least some deflection. There must be some deflection (wobble?) there, else there would be no blurred image?

I hadn't realised the D750 was a small FX body, this is why I want a D3, I have to say I'm not very familiar with the latest Nikon bodies. I will embrace the weight and 'low' pixel count of the 'old' and heavy D3 body for the benefit of improved stability and lack of fussiness gained.

I use a hydraulic video head on my heavy tripod, that is pretty well rock solid and any movement there is, is well damped. I would use a heavier, larger video head if I could find one I can afford.

Final thought... Was your tripod stood on carpet? My heavy tripod has spiked feet, I always stamp the spikes well into the ground before taking photographs, carpet or a soft (wood) floor could well account for minor vibrational movement. No matter how solid the tripod, it needs a rock solid foundation, pun intended.

Rubber feet on wood floor...suspect client might have objected to the spikes in her £90k kitchen. Yup...£90k. Crazy.

I wonder if the lack of the pro damping in the D3 Is the issue here. I seriously don't think it's the tripod head, despite it being a grip head. Bear in mind it's tension has been wound up so high it would take my Mamiya on its side ...without it sinking. I haven't had the strength to reduce the grip, since going digital. Lol it's very firm.

I will do a test when I get a minute to lay this ghost.

Nothing worse than fussy clients! Rubber, flexible rubber? Mmmm.

As you say the D3 is so smooth I can't see that vibrating.

£90k guuuulp!

D3S is better yet as it has Quiet mode which reduces mirror flap and shutter noise. However both D3 and D3S can mirror lockup which is better yet.

Celebrity chef. ;-)

She runs cookery courses in the place. I also photographed her other property...that kitchen was only £40k.

____________________
Eric

Posted: Mon Mar 14th, 2016 09:58

19^th Post

Joined:	Sun Apr 1st, 2012
Location:	Carthew, Cornwall, United Kingdom
Posts:	6987
Status:	Offline

Hi Tom,
Yes you have been quiet here and the Fuji forum.
I hope all is good with you and family healthwise.

____________________
Still learning after all these years!
https://nikondslr.uk/gallery_view.php?user=2&folderid=none

Posted: Tue Mar 15th, 2016 01:18

20^th Post

TomOC

Joined:	Wed Apr 11th, 2012
Location:	Sausalito, California USA
Posts:	616
Status:	Offline

Eric wrote:

Hi Tom
I fix aperture and let bracket vary shutter speed...so I wouldn't have expected any refocusing.

This is only the second time I used the D750 in this sort of situation and never looked at the first shoot results this deeply.

Figured as much, Eric but sounded like it was worth mentioning...

____________________
Tom O'Connell

-Lots of people talk to animals.... Not very many listen, though.... That's the problem.

Benjamin Hoff, The Tao of Pooh

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