Long time since my last photo here. A lot of detail was lost due to compression from 24Mb to 300KB.
Epi brightfield 5x/0.15 zeiss neofluar

Smokedaddy wrote:

grgh wrote:Both nice shots,but,
first shot electrifying, reminded me of old valves from radio days.

I can relate to that.



-JW:

Blue glow on 6l6 tubes is a sign of poor vaccum or/and voltage near maximum ratings.

Came across this beast last Saturday.No markings on body.Front lens diameter 12cm,rear lens diameter 8.5cm ,length about 15cm ,distance from the front element to image plane (infinity focus) 19cm,weight 3.8kg. Any idea what it is? http://www.photomacrography.net/forum/userpix/1778_2_1.jpg http://www...

I own the Nikon E400 which is also a CFI-60 microscope.Why are you using such a long tube between trino head and the camera? My photography setup has a much shorter tube. In order to get a proper advise please answer the following questions. Are there any additional optics inside the tubes? When you...

@harisA I have both Nikon and Mitutoyo objectives and I get similar vignetting with all of them. Also @Pau I have that Nikon 10x (the one in my profile photo?) and get a vignette. If you can't cover a FF frame sensor with a mitutoyo objective and your 180mm tube lens then the problem is definately ...

With the exception of Mitutoyo objectives the only way to achieve FF frame coverage is to use a tube lens with a focus distance significant higher than the objective's designation. I am curious to know what experience is the basis for that statement. I re-checked just now, and I get good full frame...

With the exception of Mitutoyo objectives the only way to achieve FF frame coverage is to use a tube lens with a focus distance significant higher than the objective's designation. Nikon objectives require 200mm tube lens and Olympus 180mm .You can start with a 300mm lens but have in mind that this ...

Is this having a front element with diameter of 184/0.9 =204mm?
If this is the case the lens must be really massive however this not evident from the pics here.

Thank you for clarify this. Do you know if there are any mirrors inside the Minolta scanner optical block?

I was able to add a few notes on the Scan Elite 5400 lens on my site, which might be of general interest: http://savazzi.net/photography/scanner_lenses.html#scanelite5400 The following is from enricco site: ''In particular, the sensor of the Scan Elite 5400 II scanner has a 53.5 mm long active area...

The lens has a diameter of 34mm and a length of 38mm.It is a fixed focus lens and was found mounted at a distance of 22mm from the scanners ccd. CCD has a length of 40mm.Since A3 paper has a width of 300mm we are talking about a 0.13x magnification on sensor. I manage to mount the lens inside a M42 ...

I couldn't resist the new ''scanner lens'' trend created by Robert O Toole.I bought the 17Kgr scanner in an open market for 5 euro. However I had to carry it with my hands for half kilometer.So in the end I can say it was a fair deal...... Microtek 9800xl is an A3 scanner with a line ccd of 21000pix...

If I understand correctly you are using shutter speed of 10sec with the combination mechanical shutter/no flash. Are you using a nd filter to block the light?If yes which one?.Also I think with such a low shutter speed (10s) you will avoid vibrations with any camera with a mechanical shutter.

In this case the feature size on subject is smaller than the sensor can resolve, given the fixed magnification (it was fixed, correct?). This can easily be calculated, assuming all sensors resolve in a theoretically predictable manner. Of course some sensors will resolve smaller details than other ...

There are a lot of threads in this forum regarding various equipment.Microscope objectives,tube lenses,macro lenses are thoroughly tested and this is good ,because knowledge is shared. However there is a lack of testing regarding image sensors despite the fact it is the weakest chain link.(it is wel...