Shutter second curtain shock moving water mount subjects when using OIL objectives

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seta666
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Joined: Fri Mar 19, 2010 8:50 am
Location: Castellon, Spain

Shutter second curtain shock moving water mount subjects when using OIL objectives

Post by seta666 »

Wow!!
Someone commented something similar on a thread, I was not able to finish some (most) stacks of water mounted specimens with OIL objectives, I thought the pressure of the objective on the coverslip was causing this but I just realized is the second curtain shutter shock, it transmits the vibration through the objective to the immersion oil and then to the coverslip and specimen. I do not have this problem with AIR objectives. Seems it is time to look for a camera with full electronic shutter, I am waiting for a second hand Nikon J1 and I will try first with that

My cameras are Sony NEX-5N and A5100; maybe other option is to mount the camera on an arm on the wall or something...

Ichthyophthirius
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Joined: Thu Mar 07, 2013 5:24 am

Re: Shutter second curtain shock moving water mount subjects when using OIL objectives

Post by Ichthyophthirius »

Hi,

You mean the vibrations after the shot is taken distub the subject? Yes, working with oil immersion objectives can be tough.

You can uncouple your camera mechanically by using a copy stand:
http://www.photomacrography1.net/images ... 3small.jpg
https://krebsmicro.com/microsetup2/0045.jpg

Adalbert
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Joined: Mon Nov 30, 2015 1:09 pm

Re: Shutter second curtain shock moving water mount subjects when using OIL objectives

Post by Adalbert »

Hello Javier,
Seems it is time to look for a camera with full electronic shutter
Good idea!
I've already switched to M6M2, but it doesn't fire the flashes at the full electronic shutter, so I have to fire them from the controller.
Best, ADi

seta666
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Joined: Fri Mar 19, 2010 8:50 am
Location: Castellon, Spain

Re: Shutter second curtain shock moving water mount subjects when using OIL objectives

Post by seta666 »

Ichthyophthirius wrote:
Mon Apr 05, 2021 10:11 am
Hi,
You mean the vibrations after the shot is taken distub the subject? Yes, working with oil immersion objectives can be tough.
.............
Yes, that is what I mean; it is very tough indeed ](*,) . I will have to do something like that but I do not have room for enlarger stand on my desk. Maybe I will make one out of wood and add a focusing rail.
Adalbert wrote:
Mon Apr 05, 2021 10:11 am
Good idea!
I've already switched to M6M2
Just bought the A5100 so I rather come with a solution like Ichthyophthirius suggested first. But next camera will have full electronic shutter for sure.
My stack controller has Flash output, which the A5100 needs anyway

Lou Jost
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Re: Shutter second curtain shock moving water mount subjects when using OIL objectives

Post by Lou Jost »

Yes, that is one of the main reasons I recommend mirrorless cameras with fully electronic shutters. The other reason, of course, is that heavy stacking will wear out a mechanical shutter.

The same bad effects happen in water immersion.

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