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Forum: Pentax K-5 & K-5 II 02-25-2012, 02:37 PM  
Overexposure on snow
Posted By kluvi
Replies: 30
Views: 5,144
You have probably did NOT red the story....
It was exposed with multisegment, no corrections.
Now i made some experiments and they are in my conclusion. Sample images with snowboarder are less damaged (oerburned) than my experimental photos. If there were possibility to use 18% metering, then i would do it! But it doesnītn work. Dark sillouette would be much better than overburns it's possible to recover it. At least for ordinary snapshots.Those accidental overexposures are SO big that it would be necessary to underexpose by -2Ev. That equals to nonexisting metering. It's simpler and better to use values which was on films (something like "use F16 1/100s on bright scenes.").

At least i found someone who agrees with me in case of insufficient time for fiddling:
"There isn't time to make adjustments while a skier is in the halfpipe. .........Looking at the LCD is nearly impossible in the bright light, at least for me. "
In that case i would prefer manual setting for brightest part e.g. sky (with +2.5Ev). But You are out when the weather changes.
Forum: Pentax K-5 & K-5 II 02-25-2012, 03:16 AM  
Very disappointed with K 5 photos
Posted By kluvi
Replies: 16
Views: 4,382
Forum: Pentax K-5 & K-5 II 02-25-2012, 03:08 AM  
Overexposure on snow
Posted By kluvi
Replies: 30
Views: 5,144
Or to use Ev bracketing with brutal values (more than 1Ev)
Forum: Pentax K-5 & K-5 II 02-25-2012, 03:01 AM  
Overexposure on snow
Posted By kluvi
Replies: 30
Views: 5,144
If it would be serious camera it would be able to do like you advices.
But with constant exposure correction. Not to take photo and check histogram, make correction and make second photo. Than when you check histogram again, you find that histogram is AGAIN overburned, because you moved camera by 5% of field (and forest surface is greater).

My conclusion (based on my tests) is:
Only method how to take snapshots on snow with dark areas is to:
A)expose to highlights by picking the brightest point
- either by use of AE-L (set corrections to +2.5Ev)
- or by use Manual (set exp. params so that it will be overexposed to +2.5Ev)
B)use flash meter and set exp params Manually (problem with filters)
C)use grey table.
But You will be not able to quick-take snapshots without fiddling with it .
D-range (and other ) settings will help you only a few.
Forum: Pentax K-5 & K-5 II 02-25-2012, 02:29 AM  
Overexposure on snow
Posted By kluvi
Replies: 30
Views: 5,144
:-p
It's really stupid that it is capable to take snapshots on snow ONLY in manual mode.... or do you think different?
:(
Forum: Pentax K-5 & K-5 II 02-17-2012, 01:48 AM  
Overexposure on snow
Posted By kluvi
Replies: 30
Views: 5,144
Yes, i know that possibilities. I used exposition for the highlights on SLR too.
But we are speaking about snapshots from trip, not intended for exhibiton, but for grandmom. :) I should use bigger part of my brain when shooting snapshots or to use compact camera (which have no such problems). :)
I have had too much expectation about K-5...
But thatīs my common problem. :)
Thanks for advices
Forum: Pentax K-5 & K-5 II 02-17-2012, 01:32 AM  
Overexposure on snow
Posted By kluvi
Replies: 30
Views: 5,144
I know, but it is still relied on my memory :-(
I have to learn to live with it...
Forum: Pentax K-5 & K-5 II 02-17-2012, 01:30 AM  
Overexposure on snow
Posted By kluvi
Replies: 30
Views: 5,144
I used slides film....
Forum: Pentax K-5 & K-5 II 02-16-2012, 03:28 PM  
Overexposure on snow
Posted By kluvi
Replies: 30
Views: 5,144
Thanks for all your opinions and advices.
TO aleonx3: eyes it would be different. If there is more of forest then it will be more overexposed. I made some test sheet and accordance to those two photos very small difference in forest area leads to great difference in (over)exposition.

TO adpo:ad 1): if i would be Multisegment Meter i would be much smarter .... ;) :D
2)Yes you are right (shadow & highlight recovery), i tried to switch to NATURAL color (and contrast) profile but with the same results. But i am lazy to switch a lot of parameters every time when i have to use camera. And lazy to process every photo in photo and RAW editor (when i do not require perfect quality). And i always forget to switch some important parameter back to usual and proper value. :-D
"with that being said...." strange...i will think about it... and i can add some noise to blowed lights...(but i still have to use the editor...)

TO Bredoteau: yes i agree
I thought that the multisegment measurement was developed mainly for such cases. It seems that center-weighted metering would be better and first of all more predictable. When i think about it....i am not able to imagine me the reason (and conditions) why to use THAT multisegment metering ....
Thank You gentlemans. :)
Forum: Pentax K-5 & K-5 II 02-16-2012, 12:55 PM  
Overexposure on snow
Posted By kluvi
Replies: 30
Views: 5,144
yes...when you have time enough.....but sometime you have no time to fiddle with camera... for instance snapshots.
And sometime you are lazy to fiddle with it...you only want to make regular photo, not excellent one. I am propably spoiled from my analog and stupid digital camera.
Forum: Pentax K-5 & K-5 II 02-16-2012, 12:51 PM  
Overexposure on snow
Posted By kluvi
Replies: 30
Views: 5,144
photos has been taken by ISO100 (around 12.4Ev or so).
And i used reversible film on my MZ5n....with only occasional problems..
:-(
I think that it is caused by "too smart" AE multisegment metering.
I used +2/3Ev on ma analog... and now in most cases on snow 0Ev, but sometimes it is fooled and -1Ev is not enough...
Probably i have to forget "shoot and forget" method on snow even when i do not require excellent results (eg snapshots to my mom's family album).
Funny is that my 10yrs old bumpy compact (100USD in 2002 ) have no such problems...
Forum: Pentax K-5 & K-5 II 02-16-2012, 12:25 PM  
Overexposure on snow
Posted By kluvi
Replies: 30
Views: 5,144
OK your are right. But my old MZ5n handled it OK :-) I expected that it will try to avoid burnouts...they are more dangerous...
I am not sure if it isn't problem of my camera... ... or Is it the way how the Pentax sees the progress?
Forum: Pentax K-5 & K-5 II 02-16-2012, 12:19 PM  
Overexposure on snow
Posted By kluvi
Replies: 30
Views: 5,144
As you can see on attached pics with EXIF...there is MULTI... (exif directly from uploaded pics may be corrupted)
Forum: Pentax K-5 & K-5 II 02-16-2012, 11:33 AM  
Overexposure on snow
Posted By kluvi
Replies: 30
Views: 5,144
HI!
I am happy owner of K-5 for 3 monts.
But now I've noticed that when shooting on the snow heavily overexposes. I do not use any exposure compensation, using standard settings, AE Point is not linked to the AF, using multisegment metering. Photo on the snow is just OK, but when the shot contains a strip of forest, exposure is rapidly increasing. Sometimes just a shift of 5% of the image and already image is shifted by 1 or more Ev. Metering in normal conditions, gray table, comparing with flash/luxmeter is OK. Itīs not coincidence, i have a lot of such photos.
I am confused...i have to check histogram/overburns after taking every shot. But often i have no possibility to check it immediately and i find such unusable photos after arriving to home.
I am an experienced user of SLR (MZ-5n analog) and I never noticed such problems.


Attachments: first pic is overexposed (1/250 F5.6) and second pic is appropriate (1/320 7.1)it is exactly 1Ev darker).
I have more such photos for examination. And much more overexposed..
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