Author Topic: New to a900 - A Few Questions  (Read 4299 times)

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Offline Collwyn

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New to a900 - A Few Questions
« on: May 09, 2013, 07:28:38 AM »
I have just bought a second-hand a900 yesterday.  This is an upgrade to my a700.

I have never seen or handled an a900 before but comparing it to my a700 I have a couple of questions.

I find I need to concentrate so much harder to keep the camera still when taking a picture.  The mirror slap is huge compared to the a700 and I find it hard to keep the camera still enough.  I suppose with double the resolution I'd have to hold it twice as still for the same field of view?

I am just starting to get paranoid as I was wondering if the steady shot was actually working as I didn't see much difference between when it was on or off.  I think it is making a little difference, but not as much as the a700 does.  Anyone else find this?

Also I was experimenting with the micro focus adjustment.  I couldn't see any difference no matter what I set it to.  Also when I change lenses, it doesn't change, it always stays at what I set it last.  Does it not recognise my Sigma lenses?  I do not have sony ones to try.

The camera looks good, no marks or scratches.  Says its only done 1900 shots.  I have no reason to question this.  I am just getting a bit paranoid that maybe something is wrong with it and I would obviously need to say now and complain to the seller if it is.

Any comments would be appreciated.

Thank you.
Sony A99+Grip
Sony 24-70 F2.8 Zeiss SSM, Sigma 70-200 F2.8 DG MACRO HSM II, Minolta 200 F2.8 AF APO High Speed, Minolta 17-35 F2.8-4 D
Minolta AF 2x Tele Converter II APO, Sigma APO Tele Converter 1.4x EX DG
Sony HVL-F42AM, Sony HVL-F58AM

Offline marc pk

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Re: New to a900 - A Few Questions
« Reply #1 on: May 09, 2013, 07:41:46 AM »
Mmmm. I've had an a900 for 4 1/2 years now and found the steady shot to work very well. And the "slapping" of the mirror is not excessive when compared to my old a300...
As for the micro focus adjustment I must admit I never use it...
Marc

"There are two ways to conquer and enslave a nation. One is by the sword.. The other is by debt." John Adams

Offline Collwyn

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Re: New to a900 - A Few Questions
« Reply #2 on: May 09, 2013, 09:30:16 AM »
Thanks for that marc pk,  makes me feel a little easier.

I suppose the steady shot would either work or not would it?  Not just work a little bit?

Other than doing hand held tests, maybe taking an average of 5 shots each, sss on and sss off, then there is no other way of knowing?
Sony A99+Grip
Sony 24-70 F2.8 Zeiss SSM, Sigma 70-200 F2.8 DG MACRO HSM II, Minolta 200 F2.8 AF APO High Speed, Minolta 17-35 F2.8-4 D
Minolta AF 2x Tele Converter II APO, Sigma APO Tele Converter 1.4x EX DG
Sony HVL-F42AM, Sony HVL-F58AM

Offline Faldrax

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Re: New to a900 - A Few Questions
« Reply #3 on: May 09, 2013, 11:54:20 AM »
Welcome to the A900 Club :)

As with the A700, when steady shot is on you should see the little bar graph and hand symbol in the viewfinder to show how hard it is working.
I have the same Sigma 24-70 f/2.8 as you, and am reasonably sure Steady shot does work with this lens.

Of course, it will only really make a difference if you are at a shutter speed that is around 1/focal length - so if you set the 24-70 to 50mm, for example, you should notice a difference in shots taken between 1/10 - 1/100 (depending on how steady your hand is), but are unlikely to notice any difference at 1/500.

I must admit that I've not sorted out the micro focus adjust on my A900, but I do know that it works based on the ID the lens reports back to the camera - and Sigma are well known for 'reverse engineering' the lens protocols, rather than licensing them, so copy lens id's from other (Sony or Minolta) lenses - usually of a similar FL, but sometimes you end up with primes reporting they are zooms. This can lead to people with a range of lenses finding that two have the same ID, but I doubt that is the case from the list shown in your sig.
It is difficult to explain to white mice that black cats are lucky...

2 x A900/VG, A6000
CZ 16-35 f/2.8, Sigma 24-70 f/2.8 HSM, Tamron 70-200 f/2.8 Di USD, Sony 70-300G,
Tamron 150-600, Sony 50 f1.4, Minolta 85 f1.4 G RS, Sony 100 f2.8 Macro
Manfrotto 055CXPro3 + 410 Junior Geared head,
Flickr : http://www.flickr.com/photos/36503683@N08/

Offline Collwyn

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Re: New to a900 - A Few Questions
« Reply #4 on: May 09, 2013, 12:23:09 PM »
Thanks Faldrax,

Yes I think the SSS is making a difference.  I was just directly comparing the a700 & a900 last night and it seemed like the a700 was doing a much better job.  Yes I know about the bars in the viewfinder and it all seemed to be 'normal.'  I was shooting at 1/10 - 1/20.  What I think I need to get used to is the mirror slap is so much more.  You can feel it knocking the camera in your hand.

When I put on my 24-70 and selected say -7 on the focus adjustment, I turned the camera off, took the lens of, put it back on, turned the camera on, and it still said -7.  I then put on my 70-200 and it still said -7.  I put it back to zero, put the 24-70 back on and it still says 0.  Its like it thinks all my Sigmas are the same lens?

This shouldn't be the case, should it?

Sony A99+Grip
Sony 24-70 F2.8 Zeiss SSM, Sigma 70-200 F2.8 DG MACRO HSM II, Minolta 200 F2.8 AF APO High Speed, Minolta 17-35 F2.8-4 D
Minolta AF 2x Tele Converter II APO, Sigma APO Tele Converter 1.4x EX DG
Sony HVL-F42AM, Sony HVL-F58AM

Offline Collwyn

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Re: New to a900 - A Few Questions
« Reply #5 on: May 09, 2013, 03:38:34 PM »
I think I have solved my issues with the focus adjustment.  Apparently all Sigma lenses have the same ID so it cannot distinguish between them.  Oh well.......... Need to save up for the 24-70 zeiss..........

Thank you for all your replies.

This is certainly a very friendly forum.
Sony A99+Grip
Sony 24-70 F2.8 Zeiss SSM, Sigma 70-200 F2.8 DG MACRO HSM II, Minolta 200 F2.8 AF APO High Speed, Minolta 17-35 F2.8-4 D
Minolta AF 2x Tele Converter II APO, Sigma APO Tele Converter 1.4x EX DG
Sony HVL-F42AM, Sony HVL-F58AM

Offline Collwyn

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Re: New to a900 - A Few Questions
« Reply #6 on: May 09, 2013, 04:47:52 PM »
Just to update you.

Been doing a bit more reading of other forums about the mirror slap.  Some people say, like what I found, that the mirror slap effects the image and that they find the sss on the a700 to work better, although some people say this isn't the case.

I was wondering if a vertical grip would help as it would dampen the thud caused by the mirror.  Might have to try it.

I can really feel the mirror slap transmitting through the camera/lens though my left hand when shooting.

Seems like I have to improve my holding technique in order to get sharper pictures.
Sony A99+Grip
Sony 24-70 F2.8 Zeiss SSM, Sigma 70-200 F2.8 DG MACRO HSM II, Minolta 200 F2.8 AF APO High Speed, Minolta 17-35 F2.8-4 D
Minolta AF 2x Tele Converter II APO, Sigma APO Tele Converter 1.4x EX DG
Sony HVL-F42AM, Sony HVL-F58AM

Offline marc pk

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Re: New to a900 - A Few Questions
« Reply #7 on: May 09, 2013, 04:52:48 PM »
I remember reading in the instruction manual - and G. Friedman emphasises the point - to switch off the stabilizer on tripods as IT WILL create a movement of the camera. This is also true of all Sony cameras I've had (a100, a300, a900 and a99). I have grips on all and I've never noticed any difference.
Marc

"There are two ways to conquer and enslave a nation. One is by the sword.. The other is by debt." John Adams

Offline Collwyn

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Re: New to a900 - A Few Questions
« Reply #8 on: May 09, 2013, 11:57:56 PM »
Thanks again for all your posts.

I have played around with it for most of the evening and now I am more than happy.  I printed out a focus chart and experimented with the focus adjustment and amazingly both my 24-70 and 70-200 both need +10 correction.  So it means I don't have to manually change it when I change lenses.

When the focus adjustment was at 0, I think this made me think I wasn't holding the camera steady enough as well because things weren't as sharp as they should be.  But I think I am learning to hold the camera more steady which is a good thing.

So thanks again for all your help.
Sony A99+Grip
Sony 24-70 F2.8 Zeiss SSM, Sigma 70-200 F2.8 DG MACRO HSM II, Minolta 200 F2.8 AF APO High Speed, Minolta 17-35 F2.8-4 D
Minolta AF 2x Tele Converter II APO, Sigma APO Tele Converter 1.4x EX DG
Sony HVL-F42AM, Sony HVL-F58AM

Offline OldClicker

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Re: New to a900 - A Few Questions
« Reply #9 on: May 10, 2013, 03:05:16 PM »
Thanks again for all your posts.

I have played around with it for most of the evening and now I am more than happy.  I printed out a focus chart and experimented with the focus adjustment and amazingly both my 24-70 and 70-200 both need +10 correction.  So it means I don't have to manually change it when I change lenses.

When the focus adjustment was at 0, I think this made me think I wasn't holding the camera steady enough as well because things weren't as sharp as they should be.  But I think I am learning to hold the camera more steady which is a good thing.

So thanks again for all your help.

The camera remembers the focus correction for each [Sony/Minolta] lens, so it would not matter if they were different. - Terry

Offline Collwyn

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Re: New to a900 - A Few Questions
« Reply #10 on: May 10, 2013, 03:08:56 PM »
Hi Terry,

Yes I know they do for Sony/Minolta lenses - of which I have none.

It sees all my Sigmas as one lens - but luckily both the ones I will be using - the 24-70 and 70-200 are both the same requiring +10 adjustment.

Thanks
Sony A99+Grip
Sony 24-70 F2.8 Zeiss SSM, Sigma 70-200 F2.8 DG MACRO HSM II, Minolta 200 F2.8 AF APO High Speed, Minolta 17-35 F2.8-4 D
Minolta AF 2x Tele Converter II APO, Sigma APO Tele Converter 1.4x EX DG
Sony HVL-F42AM, Sony HVL-F58AM

Offline Faldrax

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Re: New to a900 - A Few Questions
« Reply #11 on: May 10, 2013, 03:30:11 PM »
Google has just found the following

http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Sony.html#LensType

Gives the lens ID values for a lot of A Mount lenses - if the number (ignoring the decimal part) is the same then the camera will regard them as the same for AF Micro Adjust.

Looks like yours are all 128 :(
It is difficult to explain to white mice that black cats are lucky...

2 x A900/VG, A6000
CZ 16-35 f/2.8, Sigma 24-70 f/2.8 HSM, Tamron 70-200 f/2.8 Di USD, Sony 70-300G,
Tamron 150-600, Sony 50 f1.4, Minolta 85 f1.4 G RS, Sony 100 f2.8 Macro
Manfrotto 055CXPro3 + 410 Junior Geared head,
Flickr : http://www.flickr.com/photos/36503683@N08/

Offline Collwyn

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Re: New to a900 - A Few Questions
« Reply #12 on: May 10, 2013, 03:49:08 PM »
Thanks for that Faldrax.

I didn't notice that site with all my searching.  But as you say that confirms what I am finding.  I was just worrying that my 'new' camera was broken and I needed to find out what was going on.

It's a pity SIgma didn't just rob the Sony numbers for equivalent lenses as the chances of people having two lenses of the same range but different manufacture (e.g Sony 70-20 f2.8 and the Sigma 70-200 f2.8) is going to be less than what I have.

As I said before this is a most excellent forum - Seems like everyone is tripping over backwards to help - So much appreciated.  Just hope I can repay someday!
Sony A99+Grip
Sony 24-70 F2.8 Zeiss SSM, Sigma 70-200 F2.8 DG MACRO HSM II, Minolta 200 F2.8 AF APO High Speed, Minolta 17-35 F2.8-4 D
Minolta AF 2x Tele Converter II APO, Sigma APO Tele Converter 1.4x EX DG
Sony HVL-F42AM, Sony HVL-F58AM

Offline rannari

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Re: New to a900 - A Few Questions
« Reply #13 on: May 10, 2013, 06:01:07 PM »
Welcome to forum Collwyn. Good that you got an answer.

kurt
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Offline Twah

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Re: New to a900 - A Few Questions
« Reply #14 on: May 10, 2013, 08:03:06 PM »
Micro adjustment definitely helps. I have a Sony 50 and my adjustment is -5. If I set it 0 it's definitely fuzzier than setting it. I pretty set all my lenses to -5 as I can tell a difference.  My Tamron 200-500 is slightly differently set but I don't remember what that is.  Take several shots at 0 then work your way up to +-5 and see if you can tell. It's hard to see but after you see them side by side you can see sharper images if you get it right. Takes some practice.

Welcome to a900 heaven. Have had mine new for 2 1/2 years now and it's been my favorite body. I upgraded from a a700 and its a huge difference, especially with primes. Love my primes on the a900. 

Have to get used to the heft but get a good strap, sun sniper or black rapid and it'll be a lot more fun to use than the stock neck strap.  You'll like it
Sony A900 w/VG, A700 w/VG, IR Converted Minolta 7D, Minolta 20 f2.8, Minolta 24 f2.8, 35mm f2, 35-70 f4, Sony 50mm f1.4, Tamron 17-50 f2.8, 70-200 f2.8, 200-500, Tokina 11-16 HVL20AM flash, HVLf58AM flash.