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Forum: Pentax K-1 04-21-2017, 03:31 PM  
Was I expecting too much?
Posted By mee
Replies: 56
Views: 5,446
I had some photos I took at a wedding developed and received them this afternoon. The setting was indoors in a building without windows (no outside light and just minimal overhead light) so it was quite dark! I had no flash on the K-1. Only option was to increase the ISO... 3200.. 6400.. heading into territory that made me gulp.

Even then I had to bump up the exposure in post by half to 1 and a half stops.

On screen they are rather noisy despite running through DXO Prime noise reduction and then another masking attempt... noisy but passable.

In print (glossy 5x7), they look very nice! 5x7 is pretty small.. but I was still expecting to see quite a bit of grain. Nope.

That gives me a bit more confidence in increasing the ISO now. I wonder how big I can print and at what ISO setting before it becomes a problem.. that will be determined through a series of test prints now.
Forum: Pentax K-1 03-08-2017, 06:22 PM  
Was I expecting too much?
Posted By mee
Replies: 56
Views: 5,446
Btw I converted my 50-135mm to screwdrive this evening and then tried it on K-1. Fantastic. It seems to zoom a little quicker than SDM and it isn't that loud at all.
Forum: Pentax K-1 03-07-2017, 04:43 PM  
Was I expecting too much?
Posted By mee
Replies: 56
Views: 5,446
Thanks all for the constructive, supportive, and incitive thoughts shared. I think my K-1 is fine.

This evening I took the K-1 outside and took a few more shots. In decent light, and after processing my RAWs, I have difficulty determining my ISO 1600 shot from my test ISO 100 shot outside of viewing at 1:1.

And I think with printing the results would be even better.. the finer grain of the K-1, I suspect, might melt away a bit better on glossy prints?

I was for sure I saw tons of reviews, in the past, of FF bodies and high ISO compared to crop and the FF looked night+day better. Maybe I'm just spoiled with the K-5 II though..
Forum: Pentax K-1 03-06-2017, 10:01 PM  
Was I expecting too much?
Posted By mee
Replies: 56
Views: 5,446
Yes I mainly bought the K-1 for resolution and cropability (which I find is incredible).. my shots are mostly on a tripod with a timer at base ISO. But I have a fairly short return period if the K-1 is faulty.. so I'd rather put it through the ringer now and get it sorted on return or warranty than discover a problem later and eat the repair costs.
Forum: Pentax K-1 03-06-2017, 09:20 PM  
Was I expecting too much?
Posted By mee
Replies: 56
Views: 5,446
Well.. hmmm. After seeing that, I don't know if I should be impressed or saddened. :lol:
Forum: Pentax K-1 03-06-2017, 08:37 PM  
Was I expecting too much?
Posted By mee
Replies: 56
Views: 5,446
Yes I've been there.. it is a rather large and winding thread... page 11 (IIRC) shows there was a dark band issue at the top of some sensors (or would that be bottom since the image is flipped?). My K-1 doesn't have that issue. It does seem to have the white dots though.. but there doesn't seem to be a hard rule on what is considered OK white dot level and what is considered BAD white dot level.

When I take a shot at 25600 in a dark setting and enable NR, LR removes the color noise pretty nicely and I'm left with the white dots. Hmmm..

---------- Post added 03-06-17 at 09:43 PM ----------



Noooo! please don't go there.. in the thread, that luftfluss linked, several people go several times around the horn over that until someone is called a troll.. Don't want it to get unfriendly like that here. :lol:

Long exposures are something I tend to do with large NDFs (10 sometimes 13 stops) so clean output is rather important.. I had this issue with the K-5 II (with hot pixels in general when shooting long exposures) but never with white dots like this. This is a K-1 'trait' it seems.. They seem so scattered and random too so I'm not sure of a way to mitigate it.

From what I gathered in that other thread, The D810 also had a similar issue early on and the issue was sensor calibration of some sort that needed to be performed. But yet in that same thread some are saying a 'few' white dots are fine.. but there aren't any (that I saw) examples of acceptable level vs unacceptable level.
Forum: Pentax K-1 03-06-2017, 08:08 PM  
Was I expecting too much?
Posted By mee
Replies: 56
Views: 5,446
I sure didn't/don't. :lol:

I was expecting a cleaner ISO 800 and 1600 over my K-5 II. But it seems about the same.. ISO Noise wise..
Forum: Pentax K-1 03-06-2017, 07:22 PM  
Was I expecting too much?
Posted By mee
Replies: 56
Views: 5,446
The K-1's high ISO noise doesn't seem that better than my old K-5 II (crop) body. I'm not sure if I was expecting too much or not.. but the K-1 seems to have a finer grain yet more of it. I have some 1:1 crops of both the K-1 at 1600 ISO and the K-5 II. NR and Sharpening disabled.

Further I notice lots of hot pixels.. especially white pixels.. on long exposures. Here is a 4 minute exposure @ ISO 100 with NR and Sharpening disabled, Clarity and Shadows turned up (to show off the effect more) in a 75F room. Not exactly hot..

All imported into LR6.

Interestingly on the 'hot' pixels, the Noise reduction doesn't do a thing to them. If I turn up the NR to max level, I get a smeary image but with the bright pixels...

Is this normal!? I have the latest firmware (1.40) installed too if that matters.
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