http://confocal-microscopy-list.275.s1.nabble.com/Zeiss-40X-N-A-1-4-Plan-APo-as-replacement-for-63X-tp7582324p7582340.html
microscope can only separate point sources > 100 nm apart. However the
resolution for sampling. As George mentioned if you want to get the most
function. In that case the optimal sampling for proper deconvolution
the theoretical limit of a given NA/wavelength/refractive index. This
work with radio signals. In practice I recommend that pretty much
Timothy Feinstein, Ph.D. | Confocal Manager
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>Hello,
>I would like to react to George. In my humble opinion, best lateral
>optical resolution for confocal microscope is around 130 nm, so going
>to resolution 60x60 nm is overshoot and it is just wasting your drive
>space as you are not collecting any new real information. Resolutions
>of 50x50nm and such are area of superresolution microscopy. Our
>confocal Zeiss LSM 700 we have also highest resolution of 2k x 2k.
>High quality CCDs have even less, but sCMOS can get higher than 2k x
>2k for sure. We have objective Zeiss 40x but NA 1,3 and I can tell you
>that it is the most used objective (usually we observe stem cells)
>even tho it is not NA1,4. We have also 63x1,4 NA but ppl prefer larger
>field of view of 40x. You still get great detail and many cells in one
>image. But if you want to observe really up close organels and such I
>would go to 63x NA1,4. 40x NA 1,4 seems to me like most flexible
>objective for vast majority of observations.
>Miroslav
>
>
>2014-07-14 1:31 GMT+02:00 George McNamara <
[hidden email]>:
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>>
>> Hi Michael,
>> why 2kx2k?
>> If the 40x lens has a 250x250 um field of view, this would be
>>undersampling,
>> pixel size 125x125 nm. If even larger field of view, undersampling even
>> more.
>> I suggest pixel size of 50x50 or 60x60 nm, and 3D deconvolution (Z step
>>200
>> nm, maybe closer),
>> George
>>
>> On 7/11/2014 8:53 AM, Cammer, Michael wrote:
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>>>
>>> Does anyone have experience with the new Zeiss 40X N.A. 1.4 PlanApo?
>>>This
>>> is something I've wanted for a long time, the ability to take large
>>>fields
>>> of view (2k X 2k pixels) at high resolution instead of having to do
>>>tiling.
>>> Also, with the new cameras that have oodles of small pixels...
>>>
>>> I'm considering replacing our 63X with this new 40X. Any experience
>>>with
>>> this, other than the battle of having to explain to other scope users
>>>why
>>> this is not really lower magnification?
>>>
>>> Regards,
>>>
>>> Michael
>>>
>>>
>>>
>>>========================================================================
>>>===
>>> Michael Cammer, Microscopy Core& Dustin Lab , Skirball Institute, NYU
>>> Langone Medical Center
>>> Cell: 914-309-3270 Lab: 212-263-3208
>>>
>>>
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>>
>>
>>
>> --
>>
>>
>>
>> George McNamara, Ph.D.
>> Single Cells Analyst
>> L.J.N. Cooper Lab
>> University of Texas M.D. Anderson Cancer Center
>> Houston, TX 77054
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