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Forum: Monthly Photo Contests 07-07-2021, 05:56 PM  
Symmetry
Posted By Arte_Watanabe
Replies: 36
Views: 670
I would like to nominate this photo
Forum: Monthly Photo Contests 07-01-2021, 05:34 PM  
Regierungsviertel Berlin (Government district Berlin)
Posted By Arte_Watanabe
Replies: 41
Views: 567
I would like to nominate this photo
Forum: Welcomes and Introductions 06-30-2021, 09:41 PM  
Hello From Austin, Texas!
Posted By Arte_Watanabe
Replies: 25
Views: 1,192
I've noticed. Thank you!
Forum: Welcomes and Introductions 06-28-2021, 05:23 PM  
Hello From Austin, Texas!
Posted By Arte_Watanabe
Replies: 25
Views: 1,192
Thank you!
Forum: Film Processing, Scanning, and Darkroom 06-26-2021, 06:55 PM  
Grains/Noise In Overexposed Shots Epson 4990 VueScan
Posted By Arte_Watanabe
Replies: 18
Views: 1,970
Perhaps. We'll wait and see.
Forum: Welcomes and Introductions 06-25-2021, 10:12 PM  
Hello From Austin, Texas!
Posted By Arte_Watanabe
Replies: 25
Views: 1,192
Thank you!
Forum: Film Processing, Scanning, and Darkroom 06-25-2021, 09:55 PM  
Grains/Noise In Overexposed Shots Epson 4990 VueScan
Posted By Arte_Watanabe
Replies: 18
Views: 1,970
Oh wow, this is impressive. This really is a FULL test. Is this with 135 or 120 film?

I just talked to a person who scans negs w/ a Noritsu at a local lab. I'll have them scanned and post photos of the same negatives for a test.

Thank youj!

---------- Post added 06-25-21 at 10:11 PM ----------


That's interesting to know about the 4990. After seeing Sebastian's test I now know these things a little more.

Thank you!
Forum: Film Processing, Scanning, and Darkroom 06-24-2021, 11:09 PM  
Grains/Noise In Overexposed Shots Epson 4990 VueScan
Posted By Arte_Watanabe
Replies: 18
Views: 1,970
Wow, this is a fantastic test. Really puts it in perspective. Thank you.

On the website I saw earlier he has a photo taken w/ Portra 400 overexposed by 9 stops and it looks pretty noisy like mine. He used V700 for it. And then, he compares the same neg scanned by Fuji Frontier Scan, which resulted w/ no noise.
How Exposure affects scanning of color negative film ? Sebastian Schlueter

Which scanner did you use for your test?
Forum: Film Processing, Scanning, and Darkroom 06-24-2021, 04:32 PM  
Grains/Noise In Overexposed Shots Epson 4990 VueScan
Posted By Arte_Watanabe
Replies: 18
Views: 1,970
UNDERexposed?! Really? I knew Portras are good with overexposure but I'm not sure if I've ever pushed it more than 1 stop. I'll experiment next time.
Thank you!

---------- Post added 06-24-21 at 04:40 PM ----------


That's a good idea. I'll try and see.

I found an article explaining what causes the noise in overexposed negatives. It does seem to be caused by the limitation of my consumer level scanner even though it is a very good one. I guess I can plan to have overexposed negs professionally in the future if I really want to have it w/o noise.
How Exposure affects scanning of color negative film ? Sebastian Schlueter

Thank you!
Forum: Film Processing, Scanning, and Darkroom 06-24-2021, 10:26 AM  
Grains/Noise In Overexposed Shots Epson 4990 VueScan
Posted By Arte_Watanabe
Replies: 18
Views: 1,970
Interesting. Good to know I'm not the only one. Thanks.

---------- Post added 06-24-21 at 10:49 AM ----------


That's a good point. I also thought my scanner might be using some kind of auto level. I'll try different scanners.

I metered for her face. I didn't know overexposing it 1 or 2 stops was a thing even though something in the back of my mind told me I should try it! This, I believe, is my first time trying grossly overexposed backlight so I wasn't too experimental.

Thank you!

---------- Post added 06-24-21 at 10:50 AM ----------


Interesting. The scanner bed seems clean.

Thank you!

---------- Post added 06-24-21 at 11:05 AM ----------


I also thought the performance envelope was being pushed too far. I believe I used 600DPI for jpeg. I have no idea how much gain I'm using. How do it check that? I think I tried cropping a bit more but I'll try even more to see if that makes a difference.

The vertical lines are actually from squeegeeing it too hard. It's the damage I created on the neg myself. But, that makes me curious. Does the scan 3 w/o noise look like it needs cleaning? I've never cleaned it since I bought it so I'd love good cleaning done.

Thank you!

---------- Post added 06-24-21 at 11:07 AM ----------


This is really good to know. Thank you!
Forum: Pentax Medium Format 06-23-2021, 11:50 PM  
Post your medium format photos!
Posted By Arte_Watanabe
Replies: 20,380
Views: 3,153,196
I love the idea. Here's one.

Inna - August 23, 2020
Pentax 6x7 105mm F2.4 lens Ektar 100 1/250 F2.4
Forum: Film Processing, Scanning, and Darkroom 06-23-2021, 04:28 PM  
Grains/Noise In Overexposed Shots Epson 4990 VueScan
Posted By Arte_Watanabe
Replies: 18
Views: 1,970
Hi all,
I develop and scan my own films w/ Epson 4990 and VueScan. When I scan overexposed photos, they come out grainy w/ a lot of noise. Sometimes they come out w/ diagonal lines too. When I used to get my film processed at professional labs, overexposed shots always came out just all white (or whatever the color), smooth w/ no noise. With my current setup overexposed photos initially get scanned dark too, so I have to turn up the white point. These noises are different than the grains that are caused by underexposed shots. I haven't done any extensive research on this, but I feel like it's something very simple since I haven't thoroughly read VueScan's tutorial. Does anyone know how to fix this problem?
These are from the same roll of Portra 400 shot on Pentax 6x7.

Grainy noise in the sun


Less grainy but w/ diagonal lines


Properly exposed
Forum: Welcomes and Introductions 06-15-2021, 09:34 PM  
Hello From Austin, Texas!
Posted By Arte_Watanabe
Replies: 25
Views: 1,192
Thank you!
Forum: Welcomes and Introductions 06-15-2021, 09:34 PM  
Hello From Austin, Texas!
Posted By Arte_Watanabe
Replies: 25
Views: 1,192
Thank youj!
Forum: Welcomes and Introductions 06-03-2021, 04:09 AM  
Hello From Austin, Texas!
Posted By Arte_Watanabe
Replies: 25
Views: 1,192
Thank you. I've created my first P6x7 gallery.
Forum: Welcomes and Introductions 05-30-2021, 06:26 PM  
Hello From Austin, Texas!
Posted By Arte_Watanabe
Replies: 25
Views: 1,192
My first medium format camera was Pentax 6x7. I bought it on eBay in July, 2020. I started shooting medium format and 4x5 at the same time. That's when I started developing my own B&W and color negative films. This week I started developing color reversal film as well.

The lens reviews in this forum have helped me tremendously. I have bought 55mm, 105mm, 135mm, 150mm, 200mm, and 400mm lenses and the older 6x7 Rear Converter T6-2X and newer 6x7 Rear Converter 2X. I've written a review for the 400mm F4. Hope to post more soon.

My Pentax 6x7 gallery
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