To 1977chris兄
先和你說聲謝謝囉....其實我需要的是200mm以下得焦段,恩...已經太晚了,明天在和你聯絡ok....^^thanks a lot....

哇！！civiceg9兄
您這一台F1N好新阿！！
不過價錢.....
恩   祝您順利賣出啦...

國外的測試如下,  

Canon FD 24mm f/2.8 bayonet mount
Canon EF with mirror and diaphragm prefire
Vignetting = B- @ f/2.8, B+ @ f/4, A thereafter
Distortion = barrel
Aperture  Center    Corner
f/2.8     C         C
f/4       B         B
f/5.6     A-        B+
f/8       A-        B
f/11      B+        B+
f/16      B+        B
f/22      B         B
Notes: moderately low contrast at f/2.8; moderately high contrast at f/4; high contrast at f/5.6 to f/22.
 

Canon FD 28mm f/2 breech mount, S.S.C.
Canon EF with mirror and diaphragm prefire
Vignetting = C @ f/2, B @ f/2.8, A- @ f/4 & f/5.6, A thereafter
Distortion = slight barrel
Aperture  Center    Corner
f/2       C         C
f/2.8     A         B-
f/4       A         B+
f/5.6     A-        B+
f/8       B+        B+
f/11      A-        B
f/16      B+        B
f/22      B+        B
Note: high contrast at f/2.8 and f/22; moderate contrast at f/2.
 

Canon FD 28mm f/2 bayonet mount
Canon EF with mirror and diaphragm prefire
Vignetting = C+ @ f/2, A- @ f/2.8 and f/4; A thereafter
Distortion = waveform with moderate barrel tendency
Aperture  Center    Corner
f/2       B         C+
f/2.8     B+        B-
f/4       A-        B+
f/5.6     B+        A-
f/8       B+        B+
f/11      B+        B
f/16      B         B
f/22      B-        B
Note: moderate contrast images at f/16 to f/22; high contrast images at f/2.8 to f/4; very high contrast at f/2 (perhaps from underexposure) and f/5.6 to f/11.
 

Canon FD 28mm f/2.8 S.C. breech mount
Canon F-1 with mirror and diaphragm prefire
Vignetting = B @ f/2.8, A- @ f/4, A thereafter
Distortion = barrel
Aperture  Center    Corner
f/2.8     A-        B
f/4       A-        B+
f/5.6     A-        A-
f/8       B+        A
f/11      A-        A-
f/16      B         B
f/22      B+        B+
Note: high contrast at all apertures.
 

Canon FD 28mm f/2.8 bayonet mount
Canon EF with mirror and diaphragm prefire
Vignetting = B- @ f/2.8, B+ @ f/4, A- @ f/5.6, A thereafter
Distortion = pronounced barrel
Aperture  Center    Corner
f/2.8     B+        B
f/4       A-        B
f/5.6     A-        B
f/8       A         A-
f/11      A-        B+
f/16      B+        B
f/22      B         B
Note: high contrast at f/2.8; very high contrast at f/4 to f/16; moderately high contrast at f/22.
 
看起來 28mm/f2.8 不論新舊款都勝出.

F-1和F-1N外觀最大的差異是在機背有無底片標籤框，實質上的性能差異約有九項，例如ISO感度值，F-1N就比F-1廣，其它的很多，可上網路查到詳細的差異。所以在拍賣時，F-1N會比F-1貴出許多！

註:NF-1和F-1N是完全不用的機子！

應該是同打成用字啦！

是的！

F-1 = the old F-1 (first version) (launch in 1971)
F-1n = the old F-1 (second version with varios improvement) (launch in 1973?)

New F-1 or F-1N = the new F-1 (A completely new design launch in 1981.)

F-1n and F-1N are not official naming.

http://www.mir.com.my/rb/photography/hardwares/classics/canonf1/operations/indicator.htm

http://www.mir.com.my/rb/photography/hardwares/classics/canonf1n/index.htm

是啊！有何指教呢？

還沒，不過應該會在明後天開始吧！

3Q