Quote:
Originally Posted by narayanasharma
Since Tamron is for APS-C sensor, can it be used with A900 or A850. I want to graduate directly to a FF camera, maybe a longer waiting period- 6 months.
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Narayana,
you need to be aware of
TAMRON's lens designations in their builds.
Only those lenses marked as specifically
"Di-II" are APS-C-only glass, all other glass is Full Frame or 35mm-film.
The only
Di-II glass that TAMRON currently has on the market for the SONY mount is:
SP AF 17-50mm f/2.8 XR Di-II LD Aspherical (IF) (Model A16)
........ effectively 26-75mm on APS-C
SP AF 11-18mm f/4.5-5.6 Di-II LD Apsherical (Model A13)
.............. effectively 17-27mm on APS-C
SP AF 10-24mm f/3.5-4.5 Di-II LD Aspherical (IF) (Model B001)
...... effectively 15-36mm on APS-C
AF 55-200mm f/4-5.6 Di-II LD (Model A15)
...................................... effectively 83-300mm on APS-C
SP AF 60mm f/2 Di-II LD (IF) 1:1 MACRO (Model G005)
.................. effectively 90mm on APS-C
AF 18-250mm f/3.5-6.3 XR Di-II LD Aspherical (IF) (Model A18)
....... effectively 27-375mm on APS-C
AF 18-200mm f/3.5-6.3 XR Di-II LD Aspherical (IF) (Model A14)
....... effectively 27-300mm on APS-C
Here is the list of Full Frame (
Di) lenses:
AF 28-200mm f/3.8-5.6 XR Di Aspherical (IF) Macro (Model A031)
... effectively 42-300mm on APS-C
AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF) (Model A061)
........ effectively 42-450mm on APS-C
SP AF 28-75mm f/2.8 XR Di LD Aspherical (IF) (Model A09)
............ effectively 42-107mm on APS-C
SP AF 70-200mm f/2.8 Di LD Aspherical (IF) Macro (Model A001)
... effectively 105-300mm on APS-C
AF 70-300mm f/4-5.6 Di LD Macro 1:2 (Model A17)
......................... effectively 105-450mm on APS-C
SP AF 200-500mm f/5-6.3 Di LD (IF) (Model A08)
.............................effectively 300-750mm on APS-C
SP AF 90mm f/2.8 Di 1:1 Macro (Model 272)
.................................. effectively 135mm on APS-C
SP AF 180mm f/3.5 Di LD (IF) 1:1 Macro (Model B01)
..................... effectively 270mm on APS-C
Now, the a850/a900 Full Frame DSLRs have a feature which allows them to mount and use "APS-C only" glass on them, but you have to use the camera's menu screen to select the "APS-C size capture" Mode,
which crops them to their APS-C size image, so you do NOT lose the use of this glass, if you have it. Effectively, you can use ALL the TAMRON lenses with either the a700 or the a850/a900 DSLR (as well as the entire SONY DSLR family of cameras)
I hope you find this helpful in your decision.