[Mattia Sullini]

...i never owned a digital DSLR, so that i cannot have a precise opinion about the topic, but is it normal that at 100% i get images blurred like that?
Cannot be the lenses, because this one is shot with a Zeiss i payed more than the camera itself...Just wondered if i have problems with the focus (this one is AF),or with the sensor, or if this is right the way it is supposed to work. Thanks in advance for help

[Maximus3D]

That's indeed pretty blurry.. which camera have you got and which lens ?

/ Max

[Mattia Sullini]

The camera is a Sony alpha 100, the first edition.
Lense is a Zeiss 3,5-4,5/16-80

I'm really hoping that there is something wrong with mine. beacause that would mean it could be fixed...

[Mattia Sullini]

I know i am hasty....here are two more tests...there must be something wrong with AF. Look at these, first is AF, second is MF

[Jeff Tamagini]

I am not sure about the Sony DSLR but I own Canon and have friends that have Nikon, and sometimes lens will over or under focus. Try a sony lens on the camera with your AF on and see if it focuses correctly. I know that with Canon some people that are trying to use a slightly older AF lens on a newer body get this result and the circuitry in the lens is quite often the problem.

[Mattia Sullini]

Jeff, sadly this IS a Sony lense. The Zeiss i own is brand new and specifically built for this DSLR!
Anyway i got this problem already with my older lenses i used to mount on a Minolta Dynax, and i thought then the problem lied in the lenses. This was the final motivation for the purchase of the Zeiss, but even if it works great (no more chroma bleeding or light munching the silhouettes) my problems aren't solved!

[Leonardo]

It could be two things....

#1 Human error...

- are you sure you have your camera in autofocus.
- what speed is the shot taken... is it enough to avoid your hand vibration?

#2 Machine error.

- Defective camera.
- Defective lens. (Even a new lense can come defective)

To test #1; go and find a friend that is familar with dslr and/or your camera.

To test #2; tests the camera with different lenses

you can also take it to get it isnpected.

[Jeff Tamagini]

Jeff, sadly this IS a Sony lense. The Zeiss i own is brand new and specifically built for this DSLR!
Anyway i got this problem already with my older lenses i used to mount on a Minolta Dynax, and i thought then the problem lied in the lenses. This was the final motivation for the purchase of the Zeiss, but even if it works great (no more chroma bleeding or light munching the silhouettes) my problems aren't solved!

Does the lens have Image Stabilization? If so try turning it off, canon is IS, Nikon is VR not sure what Sony is. Next, does your body have different focus modes, my Canon has "One Shot", "AI Focus", and "AI Servo". One shot means literally focus it and the focus stays locked till you release the shutter button completely, AI Focus is a constant focus mode for things like sports and AI Servo is a hybrid of the two. Check your camera and make sure you didnt mistakenly change a setting

[simmsimaging]

Not sure about the Alpha, but I own a DSC-R1 Sony and I have never been happy with the autofocus. I end up with a fair number of soft shots. Great images otherwise - good lenses and very sharp and detailed captures - but the focus is for sh#t.

b

[Mattia Sullini]

Thanks a lot for support, guys!

@Leonardo: yes, the autofocus was active, and the speed was 1/4000...i had switched off the anti shake system, also
@Jeff: with the alpha the stabilization is not done by the lenses, but by the camera itself. it is called anti-shake system, and to avoid artfatcs i usually keep it switched off when taking pictures above 1/500 or when using a tripod. Concerning the AF system i have "single","continuous" and "auto", that means my choices are the same . That picture was taken with Auto and then i realized that the single performs much better
@Simmsimaging: ...ouch!

Anyway i just sent an email to the technical assistance of the reseller where i bought the camera asking for clarification and in case to make the camera be verified. I am beginning to fear that the most probable conclusion is that sony still has a lot to do in the autofocus compartment...

[Jeff Tamagini]

I could always come to Italy on a "Buisness Trip" and help you figure it out

[Mattia Sullini]

Well, this is one of the test-images i shot this evening from the hosts room...
It could be a pleasing business trip, then, right?