Sizes of macro extension tubes – exchange of photo stacks

I have been researching extension tubes for macro photography and can not exactly judge how the length of the extension tube will work in combination with the actual lens (eg 18mm-55mm).

I may not explain it perfectly (because I am confused), but stay with me …

So, if you set the normal lens to 18mm, add an extension hose that is 21mm long. What effect does that have?

It is clear to me that there is a point where the camera can not focus when you combine an x-length extension tube with the standard x-length lens. Can someone summarize this?

I apologize if this seems like a simple question and I've already read a lot about it, but I'm still confused about that part.

Any help grateful.

KayHosting – OpenVZ and KVM plans in different sizes for sale from Chicago!

KayHosting contacted us with some OpenVZ and KVM VPS deals in Chicago for the LowEndBox community! For those who do not necessarily need the flexibility of a KVM VPS, you can save even more with one of their OpenVZ plans.

You've been featured on LowEndBox before and received positive reviews – as always, if you decide to make a purchase, we're interested in your commenting experience!

You can find your terms and conditions here. You accept PayPal, credit cards, debit cards, Bitcoin, Bitcoin Cash, Litecoin and Ethereum as payment methods.

They had to say the following:

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  • SolusVM / OpenVZ
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  • 5120 MB (1 GB) RAM
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  • 5000 GB of traffic
  • 1 Gbps uplink
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  • SolusVM / KVM
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  • 3072 MB (2 GB) RAM
  • 2 CPU cores
  • 40 GB SSD storage space
  • 5000 GB of traffic
  • 1 Gbps uplink
  • 1x IPv4 address
  • SolusVM / OpenVZ
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  • 5120 MB (2 GB) RAM
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  • 10,000 GB of traffic
  • 1 Gbps uplink
  • 1x IPv4 address
  • SolusVM / KVM
  • Linux OR Windows OS!
  • $ 80 a year


Illinois, Chicago, USA

Test IPv4:

Test file:

Hardware Information:

OpenVZ node:

– Intel Xeon E3 / E5 processors for businesses

– At least 32 GB of RAM

– 4x 1TB Samsung 860 Professional Series SSDs

– Hardware RAID-10 with LSI 9266-4i

– Dedicated 1 Gbps uplinks

KVM node:

– Two Intel Xeon E5-2660v2 CPUs

– 192 GB RAM

– 8 x 1TB Samsung 860 Professional Series SSDs

– Hardware RAID-10 with LSI 9271-8i

– Dedicated 1 Gbps uplinks

Please let us know if you have any questions / comments and have fun!

Can I get the total number of files, folders, and sizes for a Sharepoint online document library?

Within Sharepoint (on-site and online), we can retrieve the total number of items in a document library (including files and folders) from the site content page.
but I have a document library with about 28,000 entries and would like to know the following information:

  1. Total number of files.
  2. Total number of folders / subfolders
  3. Total size.
  4. Number of files for specific types (.docx, pdf, etc.).

Now I am trying to run the "Generate File Plan Report" for the document library, but I got this error The attempted operation is prohibited because it exceeds the list view threshold enforced by the administrator.because my DL contain more than 5,000 articles. Can I get the information I need about PnP?
Many thanks

n3Servers – Brand new KVM product line !!! 4 different sizes !!!

Server is back, it's been a while since we heard from them here. They wanted to share their new plans with the LowEndBox community.
They offer 3 brand new plans, KVM-based VPSs with lots of hard disk space outside New York! This is a brand new product line for n3Server. We therefore welcome feedback from anyone who orders a KVM plan from them.

You can find your terms and conditions / legal documents here. You accept credit cards, PayPal, Bitcoin, Litecoin and Alipay as a form of payment.

They had to say the following:

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  • CPU: 1x 3.40 GHz
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KVM – 2 GB

  • RAM: 2 GB
  • CPU: 2x 3.40 GHz
  • BANDWIDTH: 2000 GB
  • SolusVM / KVM system control
  • Full root access
  • 150 USD / year

KVM – 4 GB

  • RAM: 4 GB
  • CPU: 4x 3.40 GHz
  • BANDWIDTH: 5000 GB
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KVM – 6 GB

  • RAM: 6 GB
  • STORAGE: 150GB
  • CPU: 6 x 3.40 GHz
  • BANDWIDTH: 8000 GB
  • SolusVM / KVM system control
  • Full root access
  • 290 USD / year


Buffalo, NY, USA

Test IPv4:

KVM node:

– Intel Xeon E5 processors

– 256 GB RAM

– 8 x 4TB hard drives

– Hardware RAID-10 with CVM

– 1 Gbps uplink

Please let us know if you have any questions / comments and have fun!

Website Design – Pane vs Modal vs.: Across All Screen Sizes

I'm working on a web application for the same scenario that has over 100 windows to pull out and open. After working safely, I say no to unfolding, except for news, mistakes and … as Paul Dessert said. (

1- how some people block the pop-up and also browsers.
2 and also pop-ups have problems with mobile devices. (different topics like stay up and so on).

And also via panel:
It depends on what type of panel you want to use:
There are 3 types of them:

1- Point 2- Overlay 3- Press

We use overlay in our application, and I think you use the same thing in the picture above, but I should say that if you see the application that makes you feel embarrassed, editing should make every editing user feel like a ghost on the screen appear. If you want to use this interface, slide or point.

However, you can do something else and I would call it "edit" (I'm pretty sure there is a specific name for it).

Enter image description here

If you want to view more details or add data or edit the area, it can be expanded. However, if you have a very large block of information, you should opt for the Slides panel or a page (I understand that you want to call another page) is solvable you can have a breadcrumb as in the world an application with breadcrumbs None Worry with a sibling breadcrumb no kids' breadcrumbs …)

Balsamiq model was used for the model.

Chips and button sizes in Google Material Design

Based on the "Layout & Technology" section on the "Accessibility" page, the tap area continues to be at least 48 x 48 dpi thanks to the padding:

Touch targets are the parts of the screen that respond to user input. They extend beyond the visual boundaries of an element. For example, an icon may look as if it's 24 x 24 dp in size, but the padding surrounding it includes the full 48 x 48 dp touch target.

I can not speak with the intentions of material designers, but in my own work, some elements may seem smaller to effectively communicate hierarchies and reduce cognitive burden.

Chips and button sizes

If the minimum tap area is 48 x 48 dpi (reference: accessibility of the material design), what logic is behind chips with a height of 32 dpi (technical data here) and buttons with a height of 36 dpi (technical data here)?

Typography – Why are common or frequently used font sizes even numbers like 10px, 12px, 16px, 24px or 32px?

The point is a measuring system that was taken over from traditional printing typography. It has different definitions, much like the customs and feet. With the introduction of PostScript, the value was set to 1/72 inches. I do not remember the specific story, but The use of certain font sizes is far ahead of data processing, They continue to be used because they work, and there is no urgent need for change.

Apparently not px Really stand for "pixels". Rather, it is defined as 1/96 inches. For conventional displays that have 96 dpi, a px is corresponds to a pixel. However, this is different for printers and high-resolution displays. If we convert some common point sizes into px, we get:

  • 14pt = 14 * 96/72 = 18.7 px.
  • 12pt = 12 * 96/72 = 16px.
  • 10pt = 10 * 96/72 = 13.3px.

The conversion results in broken pixels that can not be displayed accurately On standard displays even with anti-aliasing and subpixel rendering tricks. So web designers can choose to round up or down according to their preference, Habit or copying style sheets. (Example: 13.3 is rounded up to 14, even. Rounded out is 13, odd.)

This has to do with technical dependence.

There is no "technical dependency" that affects the choice between even and odd pixel sizes.

Like the symbol sizes, font sizes or other fixed dimensions are kept in pixels in even numbers to aid in scaling.

Even and odd numbers have no effect on the scaling. For example, 80% of 24 = 19.2; 80% of 15 = 12. 75% of 24 = 18; 75% of 15 = 11.25.

… browsers can not display pixels decimally.

Huh? My browser works very well with Base 10.

Responsive Web Design – Why does Chrome download images again when I use srcset and sizes?

I have an IMG tag for which "srcset" and "sizes" are set (formatted for readability).

In Firefox, this works as expected. On small screens, I get a 320px wide picture, as the window gets bigger, I get a 640s and finally a 1280s.

Chrome (74.0.3729.169) displays the image, but if I change the size of the window slightly, the image is downloaded again. And if I change the size greatly, they will be downloaded several times.

This does not seem to be affected by cache control headers. Regardless of whether they are set or not, the images are still being downloaded.

In fact, they're being re-downloaded each time, not just a record is added to the Network tab and retrieved from the cache.

Excessive image downloads in Chrome devtools