4x5 TP Anyone?

maxbloom

Member

Joined

Jun 25, 2006

Messages

187

Format

Multi Format

• Oct 25, 2007

• #1

Dunno which forum section this might belong in, but I figured people would see it here. Pricey, I know, but probably worth it to someone.

http://cgi.ebay.com/Technical-Pan-4...oryZ4204QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

 

genecrumpler

Member

Joined

Feb 26, 2006

Messages

66

Location

North Caroli

Format

Multi Format

• Oct 25, 2007

• #2

Help is on the way. See www.technicalpan.com. I've used this film and it is as advertised. Shot it in 4x5, but the resolution is much too high for meaningful results in LF images. (900 lp/mm at 1000:1---Diffration limit at f22 is 61 lp/mm-overkill)

 

OP

OP

maxbloom

Member

Joined

Jun 25, 2006

Messages

187

Format

Multi Format

• Oct 25, 2007

• #3

Why on earth would I want contrast of 1000:1?

 

gainer

Subscriber

Joined

Sep 20, 2002

Messages

3,699

• Oct 26, 2007

• #4

Don't know where you got the 61 lp/mm. Experimentally obtained value is more like 14 for perfect 100 mm lens, agrees with theoretical.

 

reggie

Member

Joined

Oct 27, 2005

Messages

274

Format

8x10 Format

• Oct 26, 2007

• #5

genecrumpler said:

Help is on the way. See www.technicalpan.com. I've used this film and it is as advertised. Shot it in 4x5, but the resolution is much too high for meaningful results in LF images. (900 lp/mm at 1000:1---Diffration limit at f22 is 61 lp/mm-overkill)

Click to expand...

Do you know what MF(120, 220) and LF sizes it will be available in and when they will be on the market, cost, etc?

-R