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Author Topic: Sinar 54H 16 shot files look soft  (Read 2914 times)
ynp
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« on: February 29, 2008, 11:27:57 AM »
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I have been using a Sinarback 54H on the Sinar-M for the last 2 months in 1 and 4 shot mode with success. 22 mpx. is more than enough for me and 4 shot is perfect  for copying artwork. No problems with the hardware. I am getting used to CS 5.5.1. and patiently wait for the eXposure.

I tried to shoot 16 shots several times and always  had some artefacts on the borders of the objects and in the areas of transition of colour in the 100% view in PS. The 50% image looks better. Downsizing helps, I do not output for the prints more than A3. Having the problem I tended to ignore it for a while being satisfied with my 4 shot images. Now I was asked to shoot Russian post stamps and I would like to use the 16 shot mode of the back.

I would like to understand whether  I have a hardware problem with my back. I have very limited experience with pixel peeping and for me the images look funny.

Thanks,
Yevgeny
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rainer_v
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« Reply #1 on: February 29, 2008, 11:33:05 AM »
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WOULD YOU POST A 100% CROP OF A DETAIL MADE IN 16SHOT MODE. EANT TO SEE IF I KNOW THE TYPE OF ARTEFACTS YOU GET
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rainer viertlböck
architecture photographer
munich / germany

www.tangential.de
ynp
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« Reply #2 on: February 29, 2008, 03:41:14 PM »
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WOULD YOU POST A 100% CROP OF A DETAIL MADE IN 16SHOT MODE. EANT TO SEE IF I KNOW THE TYPE OF ARTEFACTS YOU GET
[a href=\"index.php?act=findpost&pid=178260\"][{POST_SNAPBACK}][/a]


Sorry, I had problems with the network connection. I have downloaded a crop in one of the posts.
I am unable to attach a bigger file on Yousendit.
Yevgeny
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rainer_v
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« Reply #3 on: February 29, 2008, 05:20:09 PM »
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Sorry, I had problems with the network connection. I have downloaded a crop in one of the posts.
I am unable to attach a bigger file on Yousendit.
Yevgeny
[a href=\"index.php?act=findpost&pid=178310\"][{POST_SNAPBACK}][/a]

no i cant help, havent seen this kind of artefacts.
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rainer viertlböck
architecture photographer
munich / germany

www.tangential.de
mattlap2
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« Reply #4 on: February 29, 2008, 05:26:29 PM »
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I have been using a Sinarback 54H on the Sinar-M for the last 2 months in 1 and 4 shot mode with success. 22 mpx. is more than enough for me and 4 shot is perfect  for copying artwork. No problems with the hardware. I am getting used to CS 5.5.1. and patiently wait for the eXposure.

I tried to shoot 16 shots several times and always  had some artefacts on the borders of the objects and in the areas of transition of colour in the 100% view in PS. The 50% image looks better. Downsizing helps, I do not output for the prints more than A3. Having the problem I tended to ignore it for a while being satisfied with my 4 shot images. Now I was asked to shoot Russian post stamps and I would like to use the 16 shot mode of the back.

I would like to understand whether  I have a hardware problem with my back. I have very limited experience with pixel peeping and for me the images look funny.

Thanks,
Yevgeny
[a href=\"index.php?act=findpost&pid=178256\"][{POST_SNAPBACK}][/a]

Yevgeny,

What is the output size of the image you are shooting?    Unless the output size is extremely large I would continue to use the 4 - shot mode.

16 shot actually overlaps pixels and serves to increase file size for extremely large prints.   Many times it can appear softer on a small image.    I have also seen 16 shot out resolve many lenses and I know with the P3 set up you really need to use HR lenses either in CMV or CAB mounts.   I personally have never tried them with the zeiss lenses on the M camera by itself in 16 shot so I can't comment on their ability.

Personally I would continue to use 4 shot and use the 120 macro lens.

Matt LaPointe
Dodd Camera - Chicago
(219) 670-9905
mlapointe@doddcamera.com
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ynp
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« Reply #5 on: February 29, 2008, 06:35:02 PM »
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no i cant help, havent seen this kind of artefacts.
[a href=\"index.php?act=findpost&pid=178321\"][{POST_SNAPBACK}][/a]

Thank you, I am downloading ther sti. file on YouSendIt and post the link in the morning.
Yevgeny
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ynp
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« Reply #6 on: February 29, 2008, 06:45:55 PM »
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16 shot actually overlaps pixels and serves to increase file size for extremely large prints.   Many times it can appear softer on a small image.    I have also seen 16 shot out resolve many lenses and I know with the P3 set up you really need to use HR lenses either in CMV or CAB mounts.   I personally have never tried them with the zeiss lenses on the M camera by itself in 16 shot so I can't comment on their ability.

Personally I would continue to use 4 shot and use the 120 macro lens.

Matt LaPointe

[a href=\"index.php?act=findpost&pid=178322\"][{POST_SNAPBACK}][/a]

Matt,
 I do not think that I have a resolution issue, and I am using the Makro 120. I think that I faced the problem with the microstep tech or faulty processing. I used my 120mm. with the e75lv and IMO the lens resolves better than my Rollei 90mm.
 Yevgeny
« Last Edit: February 29, 2008, 06:48:53 PM by ynp » Logged
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