Nikon vs. Canon jpeg file sizes and resize for clients?

I recently switched from using Nikon digital equipment to the Canon system (this is

not a Canon versus Nikon thread). I had to switch because I'm forming a

partnership with 3 other phtographers who all shoot Canon and it's just easier.

 

Anyway, my question. My Nikon jpeg files had a pixel dimension of 3008x1960,

document size 10x6.5 at 300ppi. the Canon jpegs are 3504x2336 pixel dimension,

48.7x32.4 document size at 72ppi.

 

I know that the math works out as far as resolution/image size goes when translating

the two, but do you Canon shooters resize your jpegs to give to a client who just

wants the images on disk to a more reasonable document size/ppi ratio for printing

or do you give them the jpegs straight out of the camera at a document size of 48x32

at 72ppi?

 

I'm used to giving the files straight from the Nikon when a client wants the images on

disk and not printed. I'm not sure what to do about the Canon sized files.

 

Thanks in advance.

*sigh* Another person who doesn't understand how DPI works.

 

Why are you using digital equipment when you don't understand it?

 

What the file says about DPI doesn't matter. If you print it 1" by 1" big then you're going to have like 3000 dpi. if you print it 1 mile by 1 mile then your DPI will end up being like 2 dpi...

Edward...

 

why do you have to be an ass about this? i understand exactly. i am talking about

resizing the files for clients who may not understand. i have no problem with my work

or printing or converting or know what i need. this question was totally asking for

advise from people who shoot canon and what they do to help their client.

 

*sigh* another photo.net jerk who wants to make himself feel good by talking down

to other people asking a god damned question

Depending on what program is used to open the file, it may not make any difference at all. PS reads the file as 72 dpi, but other programs (like Breeze Browser) only gives the overall file size. For programs that only look at the file size, and not the resolution, there won't be any confusion.

Thank you, Bruce.

I don't like grumpy posters.<br>

They suck.<br>

I wouldn't change the ppi, if the client knows how to use a CD he should be able to fit the image to the page in the print preview window. If he can't he'll either give you a call or ask his kid to help him. Btw most printers can't take advantage of anything over 150 dpi but don't tell the client it will only confuse him. ;-)

How many PPI is irrelivant when viewing on the web or on a CD using a jpg viewer. All that matters is the resolution. Your image of 3504x2336 can be set to 300ppi or 72ppi, and it doesn't actually change the image at all... its still 3504x2336. The "document" size you are referring to is just refrence information used when printing.

 

So I agree with you about the first response being a "jerk", he was, but I also agree with the Jerk that you really don't understand how this all works and you should probably get much much better at digital darkroom techniques. Unfortunately it's become more and more painful to retype it all out over and over and over again to every single poster who wants to know how ppi/dpi/rez works.

In case you haven't got the answer yet, Bob Atkins wrote an article that covers most of these issues: <a href="http://www.photo.net/learn/resize/">Display, Printing, dpi and ppi</a> (http://www.photo.net/learn/resize/).

Hmmm, so that makes two responses where people actually understood the question, and three responses where people didn't understand the question (two of those after the question was further clarified).

 

Considering the "knowledgeable" folks in thread couldn't even understand the question, I think there's a good chance David's customers might not understand the resolution/print size issues. Considering that, I might be inclined to run a batch action to change the print dpi embedded in the file.

Brandon, You can cut and paste your response and save it in a file. That way when the next persons asks the question it will be MUCH easier just to cust and paste it back into the response! :) I am a new subscriber and also new to the digital camera world. It is the first time I have seen this type of discussion and found it very informative.. Thanks....

I have been working with film in a serious way since 1958. I've been working with digital for about a year. Not all of us have PhD's in computer science. There is a learning curve involved for those of us who are not "experts."

 

Everyday I learn something new about this. We learn by asking questions.

 

Thank you for the link to Bob Atkin's article. I am constantly looking for sources that will explain these concepts to a person like me who is not trained in this field.

John Baker - A simple search would result in countless threads on the exact same topic... countless.

David, I believe you are asking whether you should resize/resample the images to the print size the customer will need. A corollary issue is how the customer can display the image with a computer.

 

I have found that a Frontier lab, at least in a camera shop (I use Wolf Camera extensively) can handle an image of any size and ppi if the proportions fit the final result, usually 4x6 or 8x12. It is not necessary to resample. Where you run into trouble is if the proportions of the image don't fit the print size. The frontier operator will crop a 2:3 image when making an 8x10 print by clipping the ends so that the full width of the paper is used. You may prefer it be printed 7x10 so that all of the image is presented. The short story is to do the cropping yourself if cropping is required. If cropping is not needed (e.g., 4x6 or 8x12 prints), you can send the image as-is.

 

The second issue is displaying the image. If the client has a photo editing program, like Photoshop, the program will automatically fit the image on the screen. Usually the client will rely on some default program, like Internet Explorer, which may display only part of the image if it is too large to fit on the screen.

 

I usually compromise by resizing the images to 7x10 (actualy 6.667") or 8x12, without resampling (to about 300 ppi), in a level 12 JPEG, sRGB. If the customer wants a specific size or cropping, I accommodate that request.