A900 not suitable with Sony DT lens???

[km1980]

I've heard from some camera shop owners that some Sony lens that model started with DT (for example DT 18-250mm, DT 16-105mm) are not suitable to use on A900. They said it can fit into A900 but the image quality will drop.

I asked why is this so but they couldn't give me a good answer, and said that they also heard from somebody else.

I tried searching for this question online and in clubsnap forum, but couldn't get an answer too. So is this true or just a rumour? Anyone knows?

[Titan10k]

DT are cropped models and are designed to work with aps-c sensored bodies (the a100/200/300/350/700). Using them on a900 will give you heavy vignetting results.

[godzilla60]

Originally Posted by km1980 I've heard from some camera shop owners that some Sony lens that model started with DT (for example DT 18-250mm, DT 16-105mm) are not suitable to use on A900. They said it can fit into A900 but the image quality will drop. I asked why is this so but they couldn't give me a good answer, and said that they also heard from somebody else. I tried searching for this question online and in clubsnap forum, but couldn't get an answer too. So is this true or just a rumour? Anyone knows?

generally DT lens are meant for APS-C cameras.....

when coupled with A900, the megapixels of the resulting image will be reduced coz these DT lens only use the center part of the sensor, so u wun get the full 23MP that A900 offers. So the image quality drop but u can only perceive this drop when zoom in the pic fully.

[godzilla60]

Originally Posted by Titan10k DT are cropped models and are designed to work with aps-c sensored bodies (the a100/200/300/350/700). Using them on a900 will give you heavy vignetting results.

i thot the A900 will automatically reduce the megapixel when DT lens are used?

[Rashkae]

Originally Posted by godzilla60 i thot the A900 will automatically reduce the megapixel when DT lens are used?

Yup. It'll drop to 11MP, the centrer APS-C sized section.

@TS, This is the same even with the Nikon FX cameras (in case your friends tell you there's no problem on Nikon). If you mount a DX lens, you'll only make use of the center portion of the sensor.

If you did a google search for "A900 DT lenses" you would have found many many helpful threads, such as:

http://www.flickr.com/groups/sony_al...7607251549633/

And an example of using a DT lens is here:
http://dcuser.net/sony/sony-a900-alp...ouncement.html

[TME]

Originally Posted by km1980 I've heard from some camera shop owners that some Sony lens that model started with DT (for example DT 18-250mm, DT 16-105mm) are not suitable to use on A900. They said it can fit into A900 but the image quality will drop. I asked why is this so but they couldn't give me a good answer, and said that they also heard from somebody else. I tried searching for this question online and in clubsnap forum, but couldn't get an answer too. So is this true or just a rumour? Anyone knows?

The A900 will work with a DT lens... the camera will automatically crop off the areas of the sensor that are not used by the lens...

[km1980]

Wow thanks for all the replies! I was thinking to upgrade to A900 soon but just realize that my DT 18-250mm is not suitable according to a camera shop owner.

I got another question, is there a better Sony lens to recommend if I will to use A900 for a wedding dinner?

[TME]

Originally Posted by km1980 Wow thanks for all the replies! I was thinking to upgrade to A900 soon but just realize that my DT 18-250mm is not suitable according to a camera shop owner. I got another question, is there a better Sony lens to recommend if I will to use A900 for a wedding dinner?

You can use the lens on the A900 - no problem at all... you just use 11MP instead of 24.5MP. The camera will automatically switch for you.

For dinners, it depends on what you're looking for... if it's just a simple snapshot type of coverage (where you're not the main photographer), then the 18-250mm will do... if you're shooting for a friend and it is important to your friend, then I suggest, get a pro to do it or someone with more experience... you don't sound as if you've been shooting long enough...

A 24-70mm on the A900 would be very good for dinners... Try either the KM 28-75mm or Tamron 24-135mm. The first lens is only available 2nd hand, the latter can be bought new but must order I think. Or if money is no object, then either CZ 24-70mm f/2.8 or the Sigma 24-70mm f/2.8, the first costs $2400, the latter $1000+...