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A58 for videorecording => What lens from my list ?

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djfoxy View Drop Down
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Post Options Post Options   Quote djfoxy Quote  Post ReplyReply Direct Link To This Post Topic: A58 for videorecording => What lens from my list ?
    Posted: 15 March 2018 at 10:02
Hi everyone,

I intend to make a video tonight with the A58.

I can't use the A77ii because it's one of the subject so better for it to be the otherside of the lens.

So I already know that the A58 is weaker in video mode in regards of the ISO compared to the A77ii, but as it will be on tripod steadyshot video mode off, should be fine ?

My question is what lens should I use to do it knowing that it will be inside my flat no much light: 3 spots + 1 LED on light stand (+ eventually through window few remaining light of endo of day). Here is my very little shortlist:

* minolta 50/1.7
* sony dt 35/1.8
* sony dt 18-55/3.5-5.6
* minolta 50/2.8 macro ? :o
* minolta 28-135/4-4.5

I would like to have the sharpest possible. Saying this I almost nailed at the 35/1.8 though

Any advice appreciated guys.
Minolta: XG1/ D7D/<beercan>135 f2.8/ 35-70 f4/ 35-105/ 70-210 f4/ 100-200 f4.5</beercan>/ 500 f8/ 17-35 f2.8-4/   50 f1.7/   50 & 100 f2.8 macro
Sony: A58/ A77ii / 28-75 f2.8 SAM/ DT 35 f1.8/ 85 f2.8
 



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QuietOC View Drop Down
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2018 at 10:17
A big issue with the A58 video capture quality is aliasing. The sharpest lens will not be needed.

I think you would be fine with the 18-55 from 24-30 mm. If you have enough room you could use the 35 F1.8. Both of the Sony lenses benefit video capture by having Lens Compensations in the camera.

Edited by QuietOC - 15 March 2018 at 13:44
A68 30M 35 50 60M 16-50 16-80 18-55 18-70 18-135 55-200 55-300
A6000 LA-EA1 6.5 16 20 30 50 60 16-50 18-55 55-210
600si: 20 24 28 50 100M 135 24-85 24-105 28-105 35-70 35-105 70-210 75-300 100-200
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Hezu View Drop Down
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Post Options Post Options   Quote Hezu Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2018 at 10:19
I have not enough knowledge on these lenses to tell which one is the sharpest, but I guess the primes will have some edge on sharpness. If I'm not mistaken none of these provide silent AF motor, so these may not be the best video lenses if you plan to use AF as you may get focusing motor noise on the soundtrack.
Personally I would probably not take the sharpness as the primary criteria, but start testing what focal lengths suits best to this use as the sharpness is no use if the subject does not fit in the frame.
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djfoxy View Drop Down
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Post Options Post Options   Quote djfoxy Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2018 at 10:38
Thank you guys.

Good points here.

For the AF sound noise, there might not be any problem as I'll go with a wireless microphone attached to my jumper... and SAM lenses aren't so noisy neither.

But yes the thing for me will be to find the focal length. I have room in the living room.

Thank you guys I'm alreayd ok to go with the 18-55 dt.
Minolta: XG1/ D7D/<beercan>135 f2.8/ 35-70 f4/ 35-105/ 70-210 f4/ 100-200 f4.5</beercan>/ 500 f8/ 17-35 f2.8-4/   50 f1.7/   50 & 100 f2.8 macro
Sony: A58/ A77ii / 28-75 f2.8 SAM/ DT 35 f1.8/ 85 f2.8
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Miranda F View Drop Down
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2018 at 13:34
Originally posted by Hezu Hezu wrote:

I have not enough knowledge on these lenses to tell which one is the sharpest, but I guess the primes will have some edge on sharpness. If I'm not mistaken none of these provide silent AF motor, so these may not be the best video lenses if you plan to use AF as you may get focusing motor noise on the soundtrack.
Personally I would probably not take the sharpness as the primary criteria, but start testing what focal lengths suits best to this use as the sharpness is no use if the subject does not fit in the frame.


Good points, but in my experience it is no longer true (amongst dt lenses, at least) that primes are sharper than zooms. On the A58 even the cheap kit zoom will out-resolve the sensor at full aperture in the centre of the frame. So will the primes, at the same aperture, but not always at full aperture (though it does depend on which part of the image you look at).
Miranda F & Sensorex, Sony A58, 5d, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras . . .
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Miranda F View Drop Down
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2018 at 13:36
If you're making a video *of* the A77, then perhaps the macro would be a good choice as it gives performance cose up. But, actually, so does the 18-55 until you get near full macro.
Miranda F & Sensorex, Sony A58, 5d, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras . . .
 



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sybersitizen View Drop Down
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Post Options Post Options   Quote sybersitizen Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2018 at 16:00
Originally posted by djfoxy djfoxy wrote:

I would like to have the sharpest possible.

I can't imagine any of those lenses failing to provide good general sharpness for what ends up as a 2mp image (1920x1080). If for some reason corner-to-corner sharpness and/or DOF are important, there will be some differences.
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