[PRCo] slide scanning

[trams2 at comcast.net]

2400 ppi is largely overkill...these images are generally not masterpieces, and scanning times are long, while files are quite unwieldy. Resolution should be determined by size of original...I'm usually happy with 600 ppi for an 8 x 10, and 1200 for smaller sizes. 

As for enlargements...the bigger the print size, the less resolution is an issue. The vinyl image of 1711 and 14 that hangs on the front of the visitor center was made from a 16 MB TIFF file from my very first digital camera. At that print size, the eye is doing much of the work rather than the photograph. 

If I were in a different museum environment (art museum, for example), I would be more accepting of the larger scan resolutions, but for trolley work in general it eats up space and time. 

Ed 
----- Original Message -----

From: "George W. Gula via Pittsburgh-railways" <pittsburgh-railways at mailman.dementix.org> 
To: "DF Cramer" <alto_trombone at hotmail.com>, "Western PA Trolley discussion" <pittsburgh-railways at mailman.dementix.org> 
Sent: Saturday, June 20, 2015 3:48:41 PM 
Subject: Re: [PRCo] slide scanning 

Dennis 

I scan at 4000 dpi in 8 bit color for color slides using a Nikon Scanner, 
no longer available. File size is around 53MB. B&W prints are done at 
16bit 1200 or 2400 dpi depending on photo size and detail. Large files for 
sure ranging from 100 to 300 MB but I can zoom in and see lots of detail. 
Scan images in original size as TIFF images. Hard drives are cheap. 


George Gula 

On 6/19/15 6:58 AM, "Pittsburgh-railways on behalf of DF Cramer via 
Pittsburgh-railways" <pittsburgh-railways-bounces at mailman.dementix.org on 
behalf of pittsburgh-railways at mailman.dementix.org> wrote: 

>Thanks to all of you who responded to my slide scanning questions. I will 
>continue to experiment and eventually post a link to my results. I 
>purchased an Epson V550 scanner in March. My old scanner still works if I 
>use the virtual XP machine on Windows 7, but it was only a document 
>scanner. 
> 
>Dennis F. Cramer 
>http://home.windstream.net/dfc1/ 
> 
>> From: trams2 at comcast.net 
>> To: alto_trombone at hotmail.com; pittsburgh-railways at mailman.dementix.org 
>> Subject: RE: [PRCo] slide scanning 
>> Date: Thu, 18 Jun 2015 20:01:39 -0400 
>> 
>> I scan slides at 4000 or 4800 ppi. 
>> 
>> -----Original Message----- 
>> From: Pittsburgh-railways 
>> [mailto:pittsburgh-railways-bounces at mailman.dementix.org] On Behalf Of 
>>DF 
>> Cramer via Pittsburgh-railways 
>> Sent: Wednesday, June 17, 2015 7:12 AM 
>> To: PRCo 
>> Subject: [PRCo] slide scanning 
>> 
>> Good morning, 
>> It has been a while since any posts have appeared in my inbox from this 
>> list, so I have a question to get some of you typing again. I bought an 
>> Epson slide scanner and have been doing some experimenting with it. I 
>> started at 600 dpi and was not happy with any of the darker images (I 
>>had to 
>> lighten them in Photoshop Elements and they became grainy) so I went to 
>> 19000 and wow, what a difference. My question is, what dpi setting do 
>>you 
>> use? 
>> I have considered using 19000 and then cutting the file size by 50%. 
>> I am saving them in tiff format. 
>> 
>> 
>> Dennis F. Cramer 
>> http://home.windstream.net/dfc1/ 
>> 
>> 
>> -------------- next part -------------- 
>> An HTML attachment was scrubbed... 
>> URL: 
>> 
>><http://mailman.dementix.org/pipermail/pittsburgh-railways/attachments/20 
>>150 
>> 617/b73c70cf/attachment.html> 
>> _______________________________________________ 
>> Pittsburgh-railways mailing list 
>> Pittsburgh-railways at mailman.dementix.org 
>> https://mailman.dementix.org/mailman/listinfo/pittsburgh-railways 
>> 
>> 
>> --- 
>> This email has been checked for viruses by Avast antivirus software. 
>> https://www.avast.com/antivirus 
>> 
> 
> 
> 
>-------------- next part -------------- 
>An HTML attachment was scrubbed... 
>URL: 
><http://mailman.dementix.org/pipermail/pittsburgh-railways/attachments/201 
>50619/9d6d5fec/attachment.html> 
>_______________________________________________ 
>Pittsburgh-railways mailing list 
>Pittsburgh-railways at mailman.dementix.org 
>https://mailman.dementix.org/mailman/listinfo/pittsburgh-railways 





_______________________________________________ 
Pittsburgh-railways mailing list 
Pittsburgh-railways at mailman.dementix.org 
https://mailman.dementix.org/mailman/listinfo/pittsburgh-railways 




-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.dementix.org/pipermail/pittsburgh-railways/attachments/20150620/d15c8c49/attachment.html>