post processing – How to compare the before and after image in Darktable?

You can click on one step of the history stack on the right hand side to view the image “as it is at that step”. Click back to the top to view the latest version. Warning: while you are viewing one step of the history stack, any attempt to edit the picture will discard the top of your stack.

You can go to the step you want in history, make a snapshot, come back to the top of history, and compare with the snapshot.

What is the “clarification” step when processing Polaroid film?

Type 55 P/N Polaroid film (positive / negative) emerges as a positive print and a negative film sandwiched together. These images are comprised of metallic silver imbedded in gelatin. The materials being drenched with the reagents are soft thus fragile. The reagent is strongly alkaline and will cause reddening of the skin (contact dermatitis). The negative must be separated from the print hastily else the reagent and a thin brown paper mask material will adhere and if the reagent dries, all will be difficult to remove.

The positive print requires coating using the special coating material suppled in the film box. The negative emerges completely fixed and thus not light-sensitive. The film, covered by the reagent must be, within 5 minutes, be treated with an 18% solution of sodium sulfite 180g dissolved in 1000ml of water.

This solution hardens the film and prepares anti-halation dyes in the film for removal. The film, immersed in this fluid and agitated until developer reagent falls off. Gentle rubbing with a cotton swab will assist.

The film is then washed, preferably in running water, for a minimum of 30 seconds however for maximum archrival, wash for 5 minutes.

Following the wash, soak in a wetting agent such as Kodak Photo-Flo for 30 seconds and then hang allowing the film to air dry. You may achieve better uniform drying by squeegee.

europe – Processing a visa application with a past expected travel date

We’ve seen numerous examples over the years of people who have applied for Schengen visas with itineraries that were in the past at the time the application was processed. The usual response is that the visa is refused with the reason Justification for the purpose and conditions of the intended stay was not provided.

If you feel like wasting 60 euros, and possibly having an adverse immigration history, this is probably a good way to do it.

Processing of Polaroid film – “clarification”

I presume they’re referring to the (obsolete) Positive/Negative black and white Polaroids, Type 55 (and one of the 3×4 pack films). We’d normally speak of “clearing” the negative from these films after peeling the print off, in order to keep the negative in condition to use for scanning or darkroom printing.

This involves putting the negative, as soon as possible after peeling, into a sodium sulfite solution (“clearing bath”) to prevent the pod contents from hardening on the film and remaining fixer from damaging the image.

I’ve understood that the term is derived from “hypo clearing solution,” a sodium sulfite bath used to speed washing of prints (the sulfite promotes the thiosulfate to clear from the print, especially important for fiber based papers). The solution used for Polaroid negatives is much more concentrated, but has the same general effect — preservation of the negative by promoting removal of fixer (and other chemicals from the pod).

linux – Methods for tracking processing time for long running ADD INDEX call in MySQL

I’ve set off index creation on a very large table in MySQL and while I expected it to take a long time, I’m 5 days in and wondering if there’s any way to debug potential issues or simply let it run. I don’t have a precise row count but to estimate, it’s in the 100s of billions of rows and the table is ~400GB on disk. Neither memory or CPU usage appears to be overly taxed (mem ~8GB (out of 16GB total)).

The call I made from within MySQL is as follows:

alter table prices add index(dataDate, ticker, expDate, type), add index(s
ymbol), algorithm=inplace, lock=none;

Running show processlist from within a different MySQL instance shows the call with State ‘altering table’ so the call doesn’t appear blocked. Anything else I can check to gauge progress?

For reference I’m working with MySQL 8 and within Ubuntu 18.04

Supplement sales card processing

Have a wix website and need a payment gateway for supplement sales. Can anyone suggest any I can use either with wix or on another platform.

Is there a search engine with reverse search mechanism: processing multiple queries and retrieving a single result for each of them?

A regular search engine retrieves a number of results matching a single query. I need one that does the opposite: enables to input a number of queries and displays a single match to each of them. If there is no match, I need to know it too. An implementation of this approach exists, but its application is limited to the database embedding it (PubMed). Batch Citation Matcher enables a user to identify unique content in databases covering material also present in PubMed. A user can submit a text file and the engine transforms the content of the file separated in a required way into a number of queries, then displays a table with queries in one column and the information on whether the text of the queries was found in a database being compared to PubMed in another column. Is there an analogues application which can be applied to any website?

Best Payment Processing Company – Payment processors

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post processing – Multiple photos of my pregnant wife – how to make something pretty out of them?

If you would like to combine the images into a slideshow that is pleasing, easy to create, and set to music – one of my favorite options is Animoto.

It allows you to take images and video and combine them into a unique slideshow that is set to the music of your choice. They do the processing and hard data crunching on their side, so you do not need to be an expert in video editing, own any software, or even own a fast computer.

You can upload images from your computer, or any number of online photo sharing services. You have the option to upload a song, or choose from royalty free music that they offer.

The biggest benefit to choosing a service like this is the overall quality as compared to price and effort. In about 5mins of time and for under $10 USD you can have a video your friends/family will think was professional created.

URP post processing does not work?

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I am trying to recover the post-processing work after the update to URP. But it does not work !!

Could someone help me with a solution or clue?