If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Tamron 90mm SP AF f/2.8 Di
I have recently bought this excellent lens but there is something that
I do not understand about it's behaviour. I have the lens mounted on a Nikon F80. The lens is f/2.8 only when it is focused near infinity. If it is focused at the minimum distance outside the macro range it gets f/3.8 as the maximum apperture. At the macro range we have f/5.6 at 1:1 and f/3.8 at 1:2.8 I would extremely appreciate any explanation on this behaviour. Thanks in advance |
#2
|
|||
|
|||
Please ignore my posting as I just found the following thread which
explains my question very well. Help: Tamron SP 90mm F2.8 behaves like a variable aperture zoom Thanks again. Merry Christmas |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
FA: Pentax SMC 90mm f/2.8 6x7 lens | [email protected] | Medium Format Photography Equipment | 16 | December 10th 04 06:19 PM |
Thoughts on sigma tamron nikkor macros | Fred B. | 35mm Photo Equipment | 2 | October 31st 04 06:56 PM |