Post your medium format photos!

timw4mail · 10-02-2019, 10:21 AM - **1 Like**

Originally posted by mikeSF

I shot one long twilight exposure which gave me a "blue screen", literally. Then simply used the color selection tool in Photoshop to select out the entire sky and create the mask. It worked fairly well except for the blowing trees where I had to add a little "movie magic" to clean those up.

And here I was thinking the green screen comment was off...you literally did the same thing with a different chroma key...

mikeSF · 10-02-2019, 11:03 AM

Originally posted by dsmithhfx

If you can take another compliment, your photoshop skills are spectacularly good.

Thanks very much. As long as I can get a good selection, I can do okay. My usual technique if I need to separate background from sky and there is movement at the transition area, such as from trees blowing in the wind during long exposure, is to shoot a high-ISO fast shutter, overexposed image to get high contrast between areas to be separated, then crank up the contrast digitally, resulting in a high-contrast mask that can be used to clean up a sloppy area.

---------- Post added 10-02-19 at 11:04 AM ----------

Originally posted by timw4mail

And here I was thinking the green screen comment was off...you literally did the same thing with a different chroma key...

exactly that.

littledrawe · 10-02-2019, 02:29 PM

Originally posted by mikeSF

security chased me out before I could collect my star frames.

I understand all the logical reasons and I know someone will miss the sarcasm but... It doesn't really seem like there is much worth securing there!

**ivanvernon** · 10-03-2019, 06:27 AM - **2 Likes**

Here are a few garden shots with a lens not much heard from, the old manual focus Pentax 645 75mm f 2.8 LS. Here it is used as a regular lens, and in this mode it operates pretty much as an M lens on K-mount cameras. I use manual mode with the lens, but you can also use aperture priority. My approach is to set the aperture, shutter speed, and ISO that looks best for most of the shots I anticipate making and then varying exposure up or down with the +/- function, schimping/guessing as I go along. All of these are taken at 1/100 sec., f 2.8, and ISO 800 in early morning light.

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**ivanvernon** · 10-05-2019, 06:59 AM - **6 Likes**

Our dahlias and zennias are still thriving as we await our first killing frost of the fall season.

KIT: 645Z with (adapted) Pentax 67 100mm f 4.0 macro, rapidly becoming a great favorite for my flower photography.

Kmier · 10-05-2019, 11:30 AM

Originally posted by ivanvernon

Our dahlias and zennias are still thriving as we await our first killing frost of the fall season.

KIT: 645Z with (adapted) Pentax 67 100mm f 4.0 macro, rapidly becoming a great favorite for my flower photography.

The color contrast and bokeh of the second one gets my vote. Nice work.

desertscape · 10-05-2019, 11:53 AM - **7 Likes**

A 6x7 shot from the Kingdom of Tonga from 2005. Handheld, 45mm, Velvia 50.

Last edited by desertscape; 05-15-2020 at 04:51 PM.

**ivanvernon** · 10-05-2019, 12:02 PM

Originally posted by Kmier

The color contrast and bokeh of the second one gets my vote. Nice work.

Thank you.

dastar · 10-06-2019, 05:57 AM

Originally posted by ivanvernon

great use of the 200mm.

thank you

**ivanvernon** · 10-06-2019, 06:20 AM

Originally posted by Colorado CJ

Great bokeh, I love that lens.

---------- Post added 10-01-19 at 04:59 PM ----------

One more from last weekend's hike

645D and "A" 35mm f3.5

*

This landscape is good, really great, and I love seeing the P645/35mm A version in use. I have the A as well as the AF upgrade, and tend to use the A most of the time as I see little need for AF at this focal length.

**ivanvernon** · 10-06-2019, 06:25 AM - **1 Like**

Here are a few flowers with the Z and adapted Pentax 67 75mm f 2.8, not really a closeup lens, but the short MFD is too much of a temptation.

bobspez · 10-06-2019, 08:31 AM

Very nice. Great colors and detail.

Originally posted by ivanvernon

Our dahlias and zennias are still thriving as we await our first killing frost of the fall season.

KIT: 645Z with (adapted) Pentax 67 100mm f 4.0 macro, rapidly becoming a great favorite for my flower photography.

**ivanvernon** · 10-06-2019, 11:00 AM

Originally posted by bobspez

Very nice. Great colors and detail.

Thank you Bob.

BorisKolo · 10-07-2019, 12:57 PM - **7 Likes**

LaHo · 10-08-2019, 12:02 AM - **4 Likes**

Three multi-exposures on film - 645N II

Multi-Expo: Scene from the local marina

Multi-Expo: Small fishing boat

Multi-Expo: Pines at the beach

Camera: Pentax 645N II
Lens: smc Pentax-FA 645 80-160mm F:4.5
Film: Fomapan 200 Creative home dev. in Rodinal (APH-09) 1+49

10-05-2019, 11:53 AM - 7 Likes	#13687
desertscape Pentaxian Join Date: Feb 2009 Location: Arizona Posts: 1,272	South Pacific A 6x7 shot from the Kingdom of Tonga from 2005. Handheld, 45mm, Velvia 50. Last edited by desertscape; 05-15-2020 at 04:51 PM.

10-08-2019, 12:02 AM - 4 Likes	#13695
LaHo Pentaxian Join Date: Mar 2007 Location: Greater Copenhagen Area Photos: Gallery \| Albums Posts: 430	Three multi-exposures on film - 645N II Three multi-exposures on film - 645N II Multi-Expo: Scene from the local marina Multi-Expo: Small fishing boat Multi-Expo: Pines at the beach Camera: Pentax 645N II Lens: smc Pentax-FA 645 80-160mm F:4.5 Film: Fomapan 200 Creative home dev. in Rodinal (APH-09) 1+49

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10-02-2019, 10:21 AM - 1 Like	#13681
timw4mail Pentaxian Join Date: Apr 2017 Location: Driving a Mirage Photos: Gallery \| Albums Posts: 1,670	Originally posted by mikeSF I shot one long twilight exposure which gave me a "blue screen", literally. Then simply used the color selection tool in Photoshop to select out the entire sky and create the mask. It worked fairly well except for the blowing trees where I had to add a little "movie magic" to clean those up. And here I was thinking the green screen comment was off...you literally did the same thing with a different chroma key...

10-02-2019, 11:03 AM	#13682
mikeSF Pentaxian Join Date: Jan 2009 Location: East Bay Area, CA Photos: Gallery Posts: 6,622	Originally posted by dsmithhfx If you can take another compliment, your photoshop skills are spectacularly good. Thanks very much. As long as I can get a good selection, I can do okay. My usual technique if I need to separate background from sky and there is movement at the transition area, such as from trees blowing in the wind during long exposure, is to shoot a high-ISO fast shutter, overexposed image to get high contrast between areas to be separated, then crank up the contrast digitally, resulting in a high-contrast mask that can be used to clean up a sloppy area. ---------- Post added 10-02-19 at 11:04 AM ---------- Originally posted by timw4mail And here I was thinking the green screen comment was off...you literally did the same thing with a different chroma key... exactly that.

10-02-2019, 02:29 PM	#13683
littledrawe Veteran Member Join Date: Jan 2010 Location: Red Rock Photos: Gallery \| Albums Posts: 2,514	Originally posted by mikeSF security chased me out before I could collect my star frames. I understand all the logical reasons and I know someone will miss the sarcasm but... It doesn't really seem like there is much worth securing there!

10-05-2019, 11:30 AM	#13686
Kmier Forum Member Join Date: Aug 2018 Posts: 53	Originally posted by ivanvernon Our dahlias and zennias are still thriving as we await our first killing frost of the fall season. KIT: 645Z with (adapted) Pentax 67 100mm f 4.0 macro, rapidly becoming a great favorite for my flower photography. The color contrast and bokeh of the second one gets my vote. Nice work.

10-05-2019, 12:02 PM	#13688
ivanvernon Loyal Site Supporter Join Date: Oct 2012 Location: Medina, OH Photos: Albums Posts: 7,224	Originally posted by Kmier The color contrast and bokeh of the second one gets my vote. Nice work. Thank you.

10-06-2019, 05:57 AM	#13689
dastar Junior Member Join Date: Aug 2019 Posts: 25	Originally posted by ivanvernon great use of the 200mm. thank you

10-06-2019, 06:20 AM	#13690
ivanvernon Loyal Site Supporter Join Date: Oct 2012 Location: Medina, OH Photos: Albums Posts: 7,224	Originally posted by Colorado CJ Great bokeh, I love that lens. ---------- Post added 10-01-19 at 04:59 PM ---------- One more from last weekend's hike 645D and "A" 35mm f3.5 * This landscape is good, really great, and I love seeing the P645/35mm A version in use. I have the A as well as the AF upgrade, and tend to use the A most of the time as I see little need for AF at this focal length.

10-06-2019, 08:31 AM	#13692
bobspez Junior Member Join Date: May 2018 Photos: Albums Posts: 38	Very nice. Great colors and detail. Originally posted by ivanvernon Our dahlias and zennias are still thriving as we await our first killing frost of the fall season. KIT: 645Z with (adapted) Pentax 67 100mm f 4.0 macro, rapidly becoming a great favorite for my flower photography.

10-06-2019, 11:00 AM	#13693
ivanvernon Loyal Site Supporter Join Date: Oct 2012 Location: Medina, OH Photos: Albums Posts: 7,224	Originally posted by bobspez Very nice. Great colors and detail. Thank you Bob.

10-07-2019, 12:57 PM - 7 Likes	#13694
BorisKolo Veteran Member Join Date: Dec 2017 Location: St. Peterburg Posts: 444