Search found 21 matches

by david_b
Wed Nov 13, 2019 6:58 am
Forum: Camera systems and imaging
Topic: HA2307 HDMI industrial camera
Replies: 37
Views: 4182

Re: HA2307 HDMI industrial camera

I don't know why the replies to my question had to be so patronising. David ... Given that I probably made most of the replies to your question; I am assuming that you found them patronising ... for which I can only apologise, for that was not my intention at all. In my defence, I can only quote yo...
by david_b
Tue Nov 12, 2019 6:23 pm
Forum: Camera systems and imaging
Topic: HA2307 HDMI industrial camera
Replies: 37
Views: 4182

Re: HA2307 HDMI industrial camera

Scarodactyl wrote:
Tue Nov 12, 2019 3:24 pm
Calling it 'higher resolution' without qualifiers is potentially confusing, since you would use the appropriate relay optics for each sensor.
Yes that's my understanding too.

I don't know why the replies to my question had to be so patronising.
by david_b
Tue Nov 12, 2019 1:35 pm
Forum: Camera systems and imaging
Topic: HA2307 HDMI industrial camera
Replies: 37
Views: 4182

Re: HA2307 HDMI industrial camera

Yes I looked at the data sheet and the one and only mention of resolution is, "Panasonic will start mass production of a new MOS image sensor (MN34110) for digital cameras, a diagonal 7.7 mm (1/2.33-inch type) sensor with 14 megapixel effective resolution, in December 2011 and continues to develop ...
by david_b
Tue Nov 12, 2019 12:51 pm
Forum: Camera systems and imaging
Topic: HA2307 HDMI industrial camera
Replies: 37
Views: 4182

Re: HA2307 HDMI industrial camera

(a) Assuming for a moment you are correct and px size determines resolution - (b) Given that the number of px is roughly the same, the px size of the industrial camera must be much smaller. (a) How very kind of you, David (b) Quite so ... Did you look at the datasheet ? MichaelG. . N.B. The resolut...
by david_b
Tue Nov 12, 2019 7:10 am
Forum: Camera systems and imaging
Topic: HA2307 HDMI industrial camera
Replies: 37
Views: 4182

Re: HA2307 HDMI industrial camera

I looked at these but did you work out the real resolution? According to the spec: it's a 1/2.3 inch sensor, 14MP How could that be twice the resolution of a 16mp Canon EOS 7D with APS-C sensor? I suspect that it is either this sensor, or an update of same: Note the date https://news.panasonic.com/...
by david_b
Mon Nov 11, 2019 10:35 pm
Forum: Camera systems and imaging
Topic: HA2307 HDMI industrial camera
Replies: 37
Views: 4182

Re: HA2307 HDMI industrial camera

I looked at these but did you work out the real resolution? According to the spec: it's a 1/2.3 inch sensor, 14MP How could that be twice the resolution of a 16mp Canon EOS 7D with APS-C sensor? You might want to look through this article by Charles Krebs: http://krebsmicro.com/relayDSLR/relayoptic...
by david_b
Mon Nov 11, 2019 7:53 pm
Forum: Camera systems and imaging
Topic: HA2307 HDMI industrial camera
Replies: 37
Views: 4182

Re: HA2307 HDMI industrial camera

Glot wrote:
Mon Nov 11, 2019 5:29 am
I looked at these but did you work out the real resolution?
According to the spec: it's a 1/2.3 inch sensor, 14MP

How could that be twice the resolution of a 16mp Canon EOS 7D with APS-C sensor?
by david_b
Wed Nov 06, 2019 7:37 pm
Forum: About the website, the magazine and this forum
Topic: Vetting newcomers
Replies: 15
Views: 463

Re: Vetting newcomers

Has the account been hacked ?
by david_b
Fri Oct 25, 2019 7:11 pm
Forum: Camera systems and imaging
Topic: Trinoccular lens
Replies: 5
Views: 266

Re: Trinoccular lens

You should find that just a small section of the field-of-view is imaged by the sensor. i.e. it is ‘cropped’ This might help you get a ‘feel’ for it: https://www.vision-doctor.com/en/camera-technology-basics/sensor-and-pixel-sizes.html MichaelG. Very interesting website, thanks for the link. Why is...
by david_b
Thu Oct 10, 2019 3:16 pm
Forum: Beginner's corner
Topic: Canon DSLR Adapter for Bresser Infinity Microscope
Replies: 4
Views: 559

Re: Canon DSLR Adapter for Bresser Infinity Microscope

These appear to be photos of your laptop screen?
It's hard to determine what is a camera issue and what might be a screen issue.
by david_b
Tue Sep 17, 2019 6:55 pm
Forum: Sandbox
Topic: Test only
Replies: 1
Views: 1073

Re: Test only

Testing only
by david_b
Tue Sep 17, 2019 6:51 pm
Forum: Sandbox
Topic: Test only
Replies: 1
Views: 1073

Test only

by david_b
Tue Sep 17, 2019 6:47 pm
Forum: Pictures and Videos
Topic: Two Amoeboids from this week
Replies: 18
Views: 2645

Re: Two Amoeboids from this week

There's an app for iPhone called Light Meter. Free but with annoying ads.
It seems to work though I haven't tested for accuracy.
by david_b
Mon Sep 16, 2019 10:42 pm
Forum: Pictures and Videos
Topic: Two Amoeboids from this week
Replies: 18
Views: 2645

Re: Two Amoeboids from this week

Thanks David-- The microscope is an Olympus BHS/BH2 using LED illumination (nano-dyne). The camera is a Nikon Z6 full frame mirrorless. Thank you. According to the Nanodyne spec the LED replacement is 825 lumens. How does the brightness compare with the original 100w halogen, and does it use the ex...
by david_b
Sun Sep 15, 2019 6:26 am
Forum: Pictures and Videos
Topic: Two Amoeboids from this week
Replies: 18
Views: 2645

Re: Two Amoeboids from this week

Very interesting. What microscope & camera are you using? Thanks David-- The microscope is an Olympus BHS/BH2 using LED illumination (nano-dyne). The camera is a Nikon Z6 full frame mirrorless. Thank you. According to the Nanodyne spec the LED replacement is 825 lumens. How does the brightness comp...
by david_b
Sat Sep 14, 2019 4:24 pm
Forum: Pictures and Videos
Topic: Pollen. There's lots of it about.
Replies: 99
Views: 21991

Re: Pollen. There's lots of it about.

Roldorf wrote:
Fri Jul 19, 2019 2:02 pm
Yes if I could donate (to Micam) with anything other than PayPal, I would have done it, a very nice piece of software.

Pollen from Nasturtium but not Nasturtium:
Possibly common ragwort?

http://www.northumbrianbees.co.uk/polle ... -jacobaea/
by david_b
Sat Sep 14, 2019 10:12 am
Forum: Pictures and Videos
Topic: Two Amoeboids from this week
Replies: 18
Views: 2645

Re: Two Amoeboids from this week

Very interesting.
What microscope & camera are you using?
by david_b
Thu Sep 12, 2019 3:56 pm
Forum: Pictures and Videos
Topic: Another Birdbath Rotifer
Replies: 2
Views: 470

Re: Another Birdbath Rotifer

This one was creating quite a current!

https://tinyurl.com/yym3dshh
by david_b
Sun Sep 08, 2019 6:38 am
Forum: Digital processing
Topic: Photoshop CS6 v Helicon v Zerene,and the rest
Replies: 21
Views: 1612

Re: Photoshop CS6 v Helicon v Zerene,and the rest

That is true Viktor, but we only get 512k here for images. I resized the jpegs down three times and they were still too big, so I got fed up with it, and GIF'd them :lol: For what you are investigating/demonstrating, Dave ... I think it might be preferable to crop the images [to show only a specifi...
by david_b
Mon Sep 02, 2019 9:53 pm
Forum: Microscopes and optics
Topic: Microscope Upgrade
Replies: 19
Views: 1587

Re: Microscope Upgrade

...As such, I have looked at both Brunel , and GT Vision here in the UK, and have at the moment settled on the Brunel option. That is on the proviso that they will supply it with the standard 100x oil immersion lens, substituted with a more useful 60x Plan objective. It will have Plan objectives, a...
by david_b
Mon Sep 02, 2019 1:40 pm
Forum: Microscopes and optics
Topic: My New Olympus BX40 -first images
Replies: 36
Views: 2959

Re: My New Olympus BX40 -first images

I don't want to appear rude because I'm genuinely wanting to learn, but I'm struggling to understand why these photos are thought to be so good?
No part of the composite images, or the final stack, is sharp.
What am I missing?
Thanks