Wed Dec 23, 2015 12:37 pm
Wed Dec 23, 2015 2:16 pm
Wed Dec 23, 2015 2:37 pm
B-25 MM Jim wrote:Already digging into this.... we've started a number of projects to bring Miss Mitchell to the next level of restoration. The drawings have made a huge difference.... we had them before on microfilm, but they were frankly crap. The mastered drawings in Aircorps library are actually readable.
Wed Dec 23, 2015 2:43 pm
ChrisAldridge wrote:
For your B-25 set, how you you describe the exposure quality of the diazo copy? Were your scans only B&W and not grayscale?
I wonder what equipment they used and where they sourced the film sets, because NASM does have polices with use of film.
Wed Dec 23, 2015 2:52 pm
Wed Dec 23, 2015 3:00 pm
Wed Dec 23, 2015 3:55 pm
Wed Dec 23, 2015 4:53 pm
ChrisAldridge wrote:The digital imaging technology has developed far enough to scan the whole width of the 35mm microfilm exposure, to yield 250-300dpi images of 36 inch wide drawings. The Crowley Company is doing excellent work on developing new digital microfilm technology to create digital archrival quality data. The cost of the equipment will always be out of reach to 95% of users, but a central data library won’t be. For NASM’s microfilm collection, they should start scanning with the high-end equipment and reduce the generation loss with copying from master copies. In time, even the remastered master copies they use to create copy sets will degrade with generation loss. The warbird and historical research comminutes must move away from microfilm for most work.
Wed Dec 23, 2015 5:13 pm
Wed Dec 23, 2015 7:18 pm
Wed Dec 23, 2015 7:23 pm
B-25 MM Jim wrote:That's what Aircorps has done, is create 300 dpi images of the microfilm. In this case, they take that capability and are giving the community the opportunity to view it at an extremely low cost annually... While I'd love to see the NASM scan everything, they currently charge around $2500 for the B-25 drawings... I'd imagine there would be even more cost if time was spent to ensure the images were rendered and each image was given an appropriate part number title. I can't really speak to whether that is going on or not, but I do know that Aircorps is pushing out more and more data in this library, and it's at a cost that allows anyone, warbird operator or not, to benefit and learn.
Wed Dec 23, 2015 7:45 pm
rtwpsom2 wrote:B-25 MM Jim wrote:That's what Aircorps has done, is create 300 dpi images of the microfilm. In this case, they take that capability and are giving the community the opportunity to view it at an extremely low cost annually... While I'd love to see the NASM scan everything, they currently charge around $2500 for the B-25 drawings... I'd imagine there would be even more cost if time was spent to ensure the images were rendered and each image was given an appropriate part number title. I can't really speak to whether that is going on or not, but I do know that Aircorps is pushing out more and more data in this library, and it's at a cost that allows anyone, warbird operator or not, to benefit and learn.
Do you know if the lofts and ordinates are available for the B-25 fuselage, wings, nacelles, and tails in this set? I haven't found them yet.
Wed Dec 23, 2015 7:46 pm
Wed Dec 23, 2015 9:29 pm
Wed Dec 23, 2015 10:16 pm