Can a lens be too pwerful for a camera

Started Jul 9, 2013 | Discussions
CShell12
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Can a lens be too pwerful for a camera
Jul 9, 2013

Right I know I haven't put that very well so forgive me.

I have the A55 with a 70-300g and 70-400g lens.

When I have the A55 with the 70-300 the images look great, but when I put the 70-400g lens on they look worse.

I am wondering if the 70-400g is, if you like, too powerful for the sensor, too much resolution for it capable to handle and would it be better on a full frame sensor?

Or have I got a crap copy of the the lens

Cheers

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JimmyMelbourne
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Re: Can a lens be too pwerful for a camera
In reply to CShell12, Jul 9, 2013

The 70 400 demands more attention to the photographer skill. You could have a bad copy or you may not be using it to its full potential.

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Chimere
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Can a lens be too pwerful for a camera
In reply to CShell12, Jul 9, 2013

May be you can post some samples, so we see the "worse", can judge what your problem might be ?

Chimere

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GJWhite
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Re: Can a lens be too pwerful for a camera
In reply to CShell12, Jul 9, 2013

Had very similar problem, have both those lenses, a couple of years ago I was getting terrible results with it on my A700, turned out to be the Hoya Protection filter, a god one on the 70/300 and a bad one on the 70/400, they looked OK to the eye.  Now leave them off and great results, just a thought.

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Sonyshine
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Re: Can a lens be too pwerful for a camera
In reply to GJWhite, Jul 9, 2013

GJWhite wrote:

Had very similar problem, have both those lenses, a couple of years ago I was getting terrible results with it on my A700, turned out to be the Hoya Protection filter, a god one on the 70/300 and a bad one on the 70/400, they looked OK to the eye. Now leave them off and great results, just a thought.

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Gordon White - New Age Pensioner - "Get in the Slow Lane of Life, it's much more fun"

The 70-400G works fine on the A55. Its just a much bigger, heavier lens needing skill to extract the full potential.

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CShell12
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Re: Can a lens be too pwerful for a camera
In reply to Sonyshine, Jul 9, 2013

Sonyshine wrote:

GJWhite wrote:

Had very similar problem, have both those lenses, a couple of years ago I was getting terrible results with it on my A700, turned out to be the Hoya Protection filter, a god one on the 70/300 and a bad one on the 70/400, they looked OK to the eye. Now leave them off and great results, just a thought.

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Gordon White - New Age Pensioner - "Get in the Slow Lane of Life, it's much more fun"

The 70-400G works fine on the A55. Its just a much bigger, heavier lens needing skill to extract the full potential.

Hi

Thanks for the replies.

The shots that I took that I wasn't pleased about where done using a Monopod, however, I don't have the steadiest of hands so I did some shots using a tripod.

Theses where much better, but as a few have said you need skill using it to get the best results, seems I'm going to have to keep practicing.

So it looks like with they weight, and the shaky hands, I'm going to have to use it on a tripod to get the best results

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Marco Cinnirella
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Re: Can a lens be too pwerful for a camera
In reply to CShell12, Jul 9, 2013

CShell12 wrote:

Sonyshine wrote:

GJWhite wrote:

Had very similar problem, have both those lenses, a couple of years ago I was getting terrible results with it on my A700, turned out to be the Hoya Protection filter, a god one on the 70/300 and a bad one on the 70/400, they looked OK to the eye. Now leave them off and great results, just a thought.

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Gordon White - New Age Pensioner - "Get in the Slow Lane of Life, it's much more fun"

The 70-400G works fine on the A55. Its just a much bigger, heavier lens needing skill to extract the full potential.

Hi

Thanks for the replies.

The shots that I took that I wasn't pleased about where done using a Monopod, however, I don't have the steadiest of hands so I did some shots using a tripod.

Theses where much better, but as a few have said you need skill using it to get the best results, seems I'm going to have to keep practicing.

So it looks like with they weight, and the shaky hands, I'm going to have to use it on a tripod to get the best results

Look up my recent, very long thread about my 70-400 - I seem to be getting better results with no filter attached, but using the 70-400 takes practice and I still need to use 1/1000 shutter at the moment to get the best out of mine.

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busch
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Re: Can a lens be too pwerful for a camera
In reply to Marco Cinnirella, Jul 9, 2013

Marco Cinnirella wrote:

(clip)

Look up my recent, very long thread about my 70-400 - I seem to be getting better results with no filter attached, but using the 70-400 takes practice and I still need to use 1/1000 shutter at the moment to get the best out of mine.

Marco, I shoot most of my aircraft shots handheld at around 1/350 and get pretty good results IMO. Examples:

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Marco Cinnirella
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Re: Can a lens be too pwerful for a camera
In reply to busch, Jul 10, 2013

busch wrote:

Marco Cinnirella wrote:

(clip)

Look up my recent, very long thread about my 70-400 - I seem to be getting better results with no filter attached, but using the 70-400 takes practice and I still need to use 1/1000 shutter at the moment to get the best out of mine.

Marco, I shoot most of my aircraft shots handheld at around 1/350 and get pretty good results IMO. Examples:

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Busch
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Hey Busch - undeniably great shots - it must be those fighter pilot nerves of steel and steady hand - my nerves are shot to shreds and I have shaky hands, so maybe my high shutter speed requirements are different to those of the average person...

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headfirst
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Re: Can a lens be too pwerful for a camera
In reply to Marco Cinnirella, Jul 10, 2013

of course it could also be that your 70-400 is back/front focusing on that body (which unfortunately does not have micro-adjust).

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Marco Cinnirella
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Re: Can a lens be too pwerful for a camera
In reply to headfirst, Jul 10, 2013

headfirst wrote:

of course it could also be that your 70-400 is back/front focusing on that body (which unfortunately does not have micro-adjust).

Yes, should be easy to test for that, though nothing you can do other than upgrade to an a77/a99 or get Sony to re-calibrate the lens to your camera

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seilerbird666
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Re: Can a lens be too pwerful for a camera
In reply to CShell12, Jul 10, 2013

I have owned an a55 since they first came out and I have taken thousands of shots with my Tamron 200-500 at the 500mm end so I know for fact that the 70-400 is not too powerful for the camera.

Your problem is definitely too slow of a shutter speed. You should not use anything less than 1/1000th of a second. If the light is too dim for that shutter speed then put the lens away.

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RichV
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One other thing you can try
In reply to CShell12, Jul 10, 2013

As mentioned elsewhere, you might have a focus alignment issue (in addition to a stability problem). Maybe a good way to try it is to shoot the same subject (one with detail to it and good lighting) from the tripod - one shot with AF and another with magnified manual focus. While the magnified MF should always look better (relative to distance and object characteristics), if there's a huge difference then you should look to further testing for back/front focus. Also realize that if your style include focus-recompose, you could lose some accuracy, depending on subject distance and angle.

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