tamron 28-75 f2.8

[skopio]

hello,

will be getting this lens soon. as this would be my first major lens purchase, rather uptight about it as i want to get a good copy.

for those who own this lens, maybe you can share what defects i should be looking out (concerning this lens in particular) for as well as what were your experience in testing? even better still teach me how to test!

really appreciate the community here being so helpful so far!

thanks!

[ah.zeep]

Originally Posted by skopio hello, will be getting this lens soon. as this would be my first major lens purchase, rather uptight about it as i want to get a good copy. for those who own this lens, maybe you can share what defects i should be looking out for as well as what were your experience in testing? even better still teach me how to test! really appreciate the community here being so helpful so far! thanks!

Check out this thread with some excellent tips on testing lenses... good luck!

[skopio]

thanks for the tip! erm, what's the difraction limit for this lens? most lens reviews stop @ f8..

[Isaiahfortythirtyone]

i have this lens. i think diffraction is something to be concerned about only if you print very large or you like to pixel peep. based on technical data, diffraction sets in abt f/8. but i have shot at f/11 f/13 f/16 with this lens beofre and printed super 8R with no problems.

i have not shot at f/22 though.

but it's a great lens to get! f/2.8 usable, but sharpens A LOT at f/4.

[ExplorerZ]

Originally Posted by skopio thanks for the tip! erm, what's the difraction limit for this lens? most lens reviews stop @ f8..

why bother so much about diffraction? how often do you stop down a f2.8 lens to f11-32?
the only time i stopped all the way past f16 is when i wanted to do panning of speed around 1/20s in the afternoon.

[yipdanny]

Agreed.

I have this lens. Indoor shot normally at f4 and outdoor at f/4-f11. Hardly go beyond f/11.

Originally Posted by ExplorerZ why bother so much about diffraction? how often do you stop down a f2.8 lens to f11-32? the only time i stopped all the way past f16 is when i wanted to do panning of speed around 1/20s in the afternoon.

[skopio]

Originally Posted by ExplorerZ why bother so much about diffraction? how often do you stop down a f2.8 lens to f11-32? the only time i stopped all the way past f16 is when i wanted to do panning of speed around 1/20s in the afternoon.

i'm thinking i might use the wide end to cover scenics.. before i save enough $$$ to buy wide angle.. so wondering about the limitations of the lens lor..

thanks to all for your input!!!

[ExplorerZ]

Originally Posted by skopio i'm thinking i might use the wide end to cover scenics.. before i save enough $$$ to buy wide angle.. so wondering about the limitations of the lens lor.. thanks to all for your input!!!

don think you can really notice any different when comparing f8 and f16(maybe just a tiny bit of difference when comparing side by side)

[skopio]

oh, btw, if i go into a store, ask for all their stock, test 1 by 1 and then view on my laptop - will the store owners kill me???

[ExplorerZ]

Originally Posted by skopio oh, btw, if i go into a store, ask for all their stock, test 1 by 1 and then view on my laptop - will the store owners kill me???

i dono... i only tested mine with my camera pathetic LCD zoom.

[cheeyt]

Originally Posted by Isaiahfortythirtyone but it's a great lens to get! f/2.8 usable, but sharpens A LOT at f/4.

Agree on this. The images you receive is super sharp n clear taken at about F/4 provided you got a good copy also.

[skopio]

Originally Posted by ExplorerZ i dono... i only tested mine with my camera pathetic LCD zoom.

LCD? i scared LCD can't tell whether got defects.. so will i get chased out of shop?

[ExplorerZ]

Originally Posted by skopio LCD? i scared LCD can't tell whether got defects.. so will i get chased out of shop?

true true... but anyway i ended up with a good copy(should be) since it is pretty sharp @ f2.8, and nearly reached sharpness peak at f4.

[Hoky]

Originally Posted by skopio LCD? i scared LCD can't tell whether got defects.. so will i get chased out of shop?

Try buying from John3:16 in this case. They allow customers to do testing....
That's the reason why I don't like to buy from them also... the lenses kenna too many hands (fingerprints, wipes.. etc).

MScolor is pretty alright as well in this aspect as well, but don't push your luck too far to test every single piece they have.

[skopio]

Originally Posted by ExplorerZ true true... but anyway i ended up with a good copy(should be) since it is pretty sharp @ f2.8, and nearly reached sharpness peak at f4.

er.. how to tell sharpness peak? where/when the peak? u referring to 28 mm f2.8 right?

[ExplorerZ]

Originally Posted by skopio er.. how to tell sharpness peak? where/when the peak? u referring to 28 mm f2.8 right?

not really the peak, but if you do look at it closely, @ f4 the sharpness is almost as close as f5.6 or f8(usually the sharpest one can get from a lens)

[skopio]

there's an aperture ring right? for MF?
oh, and where is this lens made? just wondering..

[raptor84]

Originally Posted by skopio there's an aperture ring right? for MF? oh, and where is this lens made? just wondering..

YOu seems confused about the terminology. Aperture rings control the aperture size and will not affect the focusing. Thats what the focusing ring is for.

[skopio]

Originally Posted by raptor84 YOu seems confused about the terminology. Aperture rings control the aperture size and will not affect the focusing. Thats what the focusing ring is for.

sorry i mean for MF cameras(FM2).. ie. need aperture ring..

[ExplorerZ]

Originally Posted by skopio there's an aperture ring right? for MF? oh, and where is this lens made? just wondering..

17-50 or 28-75?
28-75 got a aperture ring... but iirc i nv saw one on my frend 17-50(guess becos it was meant for fully digital..