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good solid editor-- would like to see other payment choices, like a quarterly option, and even instead of relying on automatic renewal, send a reminder email prior to the renewal to ensure the user is still consistently using product
2014-08-27
I've tried other programs to convert pdf files and it didn't work. At least you were able to convert from pdf to a document I needed to type and enter information on before submission. I would like to save my resume' in a docx. file without loosing the format. My resume is already created but I would like to make changes on it when I get a new job. Please help!!!
2019-04-25
Outstanding Online Support
I have used Pdffiller for the past 4 years to file tax returns for an investment group with over 40 members. I made an error when creating my template and when I went to print the 40 documents an erroneous number was appearing, the result of my error in creating the document. Fortunately Pdffiller has an online support staff. So many online companies require you to submit a ticket and then promise a 24 to 48 hour response time. Pdffiller offers that option but they have an outstanding online chat support. I had the benefit of working with Ryan and got access to him immediately upon opening up the online chat support. This was in the evening but Ryan thoroughly researched and tested my issue. Sadly the only option that appeared to be the answer was to create a new set of 40 documents which Ryan was willing to teach me how to create the docs in way that would avoid this error. When I expressed my issue with not having another 6 hours to re-create my work, Ryan persisted in finding a work around that was very creative and saved me from over six hours of new work!!! Needless to say I was ecstatic!!! Thank you Pdffiller for not only a great product but an online support staff that truly cares about helping customers get the results they require!!
2020-03-07
I had an issue that customer service…
I had an issue that customer service handled quickly and professionally. I was very impressed! I highly recommend working with this company they have excellent customer service.
2020-01-17
Love this!!! Can erase words from PDF's.
You will love this program!!!
There is an eraser feature that is the best thing ever. This allows you to change a PDF document. How many times do you need to modify a document, or wish it said something different, but don't have an editable version. With PDFfiller you can erase the verbiage, and replace it with something else. You can also easily place your signature on documents too. You can upload you own personal signature too.
2018-01-11
PDFFiller is easy to use. Took only a few minutes to set up and get started. All your documents are in order and they're easy to access. When forwarding to a client, etc., I like that it generates a security code that's required to access the documents. Customer service is *******! They are quick to respond and will work to resolve any challenges to your satisfaction. Thank you PDFFiller for a great experience! "
2021-06-07
What do you like best?
That I can mark up any pdf or create 1 new document from several. Also digital signatures, I work remotely and need this! Being remote, I need to be able to create or sign a form from anywhere and I can easily with pdf filler. I love the share feature as well, I can work on my end and my co-workers will have it almost instantly without having to print, scan and email. I work remotely, almost all from my laptop with no printer. This allows me to work from my phone or tablet seamlessly as well.
What do you dislike?
Not much, no complaints yet. Maybe the layout? Like where everything is, I click on the documents and then you have to specify where something is. Maybe a more organized folder system? When I share them, they should all be in the share folder, but for some reason, they're not always there. I am a very organized person and like everything in its own folder or file. I'd like a way to save everything to its own file and be able to find them quickly and easily.
Recommendations to others considering the product:
This is a great program, especially if you work remotely, highly recommend it!
What problems are you solving with the product? What benefits have you realized?
1099 tax reports, our software only supports e-file and we are so small that we don't have that. I also love the share part, I'm able to work on my end, share it with my co-workers and they can have it almost instantly without printing and scanning, etc. I also love that I can take a few different documents and combine them to one, that is a great feature!
2021-02-11
This site was exactly what we needed to edit pdf's and create fillable fields for all of our school enrollment forms. The options for receiving the information when completed, as well as many other perks made this a perfect product for our use. We continue to find more and more uses in our school setting for using pdffiller. I highly recommend this product.
2020-08-05
My overall experience with your company was that of successful convenience. I was able to Get work I need it done in a reasonable amount of time and I had nowhere to turn until I found PDFfiller.com
2024-12-19
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What is the limit of resolution of a microscope?
The limit of resolution (or resolving power) is a measure of the ability of the objective lens to separate in the image adjacent details that are present in the object. It is the distance between two points in the object that are just resolved in the image.
What is resolution in microscopy?
The resolution of an optical microscope is defined as the shortest distance between two points on a specimen that can still be distinguished by the observer or camera system as separate entities.
What is the maximum resolution obtained with the light microscope?
The range of wavelengths for visible light is approximately 400700 nm. consequently, using the Abbé formula, it can readily be shown that the resolution limit of the light microscope is in the order of 200 nm. The 'useful' range of magnification is approximately 5001000 NA.
How do you determine the resolution of a microscope?
NA= n x sin Where n is the refractive index of the imaging medium and is half of the angular aperture of the objective. D= /2 NA. Where is the wavelength of light used to image a specimen. D= 2 /NA2 R= 1.22 /Naomi+Second.
What factors affect resolution of a microscope?
The primary factor in determining resolution is the objective numerical aperture, but resolution is also dependent upon the type of specimen, coherence of illumination, degree of aberration correction, and other factors such as contrast-enhancing methodology either in the optical system of the microscope or in the
What determines the resolution of a microscope?
The resolution of an optical microscope is defined as the shortest distance between two points on a specimen that can still be distinguished by the observer or camera system as separate entities.
How do you change the resolution on a microscope?
The resolution of a specimen viewed through a microscope can be increased by changing the objective lens. The objective lenses are the lenses that protrude downward over the specimen. Grasp the nose piece. The nose piece is the platform on the microscope to which the three or four objective lenses are attached.
Why does wavelength affect resolution?
Light Wavelength and Refractive Index Microscope resolution is also impacted by the wavelength of light being used to illuminate the specimen. Longer wavelengths of light offer less resolution than short wavelength illumination. As light slows down the wavelength gets shorter and yields better resolution.
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