Tag Archives: digital

52 Cameras: Canon Powershot SX230 HS

The manual is still available from Canon.

Modes available from the mode dial: Manual, Aperture Priority, Shutter Priority, Program Auto Exposure, Auto, Easy, Movie Digest (makes a movie from stills), Scene modes (see below), Creative Filters (see below-below), Movie (or set up preferences in the menu & hit the red button).

Scene Modes: Portrait, Landscape, Kids & Pets, & SCN. SCN has menu options: Handheld Night Scene, Low Light, Beach, Underwater (requires housing – this camera is not waterproof), Foliage, Fireworks, & Snow.

Creative Filters: Super Vivid, Poster Effect, Fish-eye, Miniature, Toy, Monochrome (actually pretty nice), Color Accent, & Color Swap.




Collared lizard.

Collared lizard.


Inside an empty yucca seed pod.

Inside an empty yucca seed pod.


M doing the hard part of Kitchen Mesa, Ghost Ranch, NM.

M doing the hard part of Kitchen Mesa, Ghost Ranch, NM.


View of Abiquiú lake and Pedernal from Kitchen Mesa.

View of Abiquiú lake and Pedernal from Kitchen Mesa.

Geminid Photobombing Orion 14 December 2020

Canon 60D, ISO 1600, f/2, 15 seconds, Sigma 30mm F1.4 EX DC (HSM).* The lens is 48mm equivalent field of view with the 60D’s 1.6X crop factor. For meteors, a wider lens is better but this is what I have in sharp, fast glass. I got a couple of meteor images at 30 seconds but the stars are little glow worms.

Geminid meteor photobombing Orion

No post processing other than resizing.


Geminid meteor photobombing Orion

I’ll list post processing below.


Some of the stars in the original, particularly Orion’s belt, have red halos so looking at them zoomed out they look pink.

First, I desaturated the red channel on selected stars.

Next I used the Focus Magic filter to undo some motion blur (about 7 pixels). I’m using a demo version and still learning my way around it. It tends to oversharpen but I think that’s more a function of my ignorance than anything wrong with the algorithm. The demo is nice. It doesn’t cripple the software or add a watermark, you just have a limit of 10 images.

Pixel-peeping to see how well the blur removal worked, I found more red halos and did another round of selective red desaturation.

In GIMP, I adjusted the exposure to -0.750. An un-adjusted image comes up with exposure ‘0’. I’m not sure what the units are but I tweaked to taste. The trees lost a little glow but the sky looks more like what my eyes saw. I’ll probably play some more. If anything worth seeing comes out of it, I’ll update this post.

* This lens is discontinued. I got mine as a Sigma factory refurbished lens when the model was still current. Some “new old stock” is available depending on mount and mint used ones can be picked up inexpensively. The newer version is part of Sigma’s “Art” series. It costs a bit more (MSRP $499) and is tweakable with their USB dock.

Worldwide Pinhole Photography Day 2020 (backup and backup-backup)

For 2020, I’m doing an extremely-long-exposure photograph or solargraph. The Worldwide Pinhole Photography Day rules are that the photograph must be taken “on the day annually designated as Worldwide Pinhole Photography Day ( April 26, 2020 )” or “Extremely long exposures will be accepted if any part of the exposure was made on Worldwide Pinhole Photography Day…”

I started the exposure on 1 May 2019 and I want to do a full year. That means if the exposure is a bust, I’ve missed WPPD and I’ve got nothing.

So… I decided to make another pinhole camera and use a scanner. I used a USB powered Canon LIDE 30 as a digital back and VueScan and TWAIN-SANE software. The results are not a supreme victory but first, the camera.

JPEG from a PDF page print from http://mrpinhole.com/. I used 8×10 inches as the portion of the 8.5×11″ scanner in case I had to resort to paper. The 16″ film dimension is insurance and a trade off to get the specs I wanted.

I wanted to keep exposure simple and let in a lot of light so I chose a 1mm pinhole and a 10 inch (254mm) focal length to get f/256-ish, a nice power of 2.

I wanted to keep exposure simple and let in a lot of light so I chose a 1mm pinhole and a 10 inch (254mm) focal length to get f/256-ish, a nice power of 2.


It's big so the image won't be super sharp but the pinhole came out pretty well.

It’s big so the image won’t be super sharp but the pinhole came out pretty well.


Foamboard is versatile stuff.

Foamboard is versatile stuff.


I had to actually think about how to get the required sizes from a 20x30" piece. The horror!

I had to actually think about how to get the required sizes from a 20×30″ piece. The horror!


Hot glue is wonderful stuff. Too bad I didn't account for the thickness in the construction calculations (had to fudge a bit).

Hot glue is wonderful stuff. Too bad I didn’t account for the thickness in the construction calculations (had to fudge a bit).


I made it too tall on purpose but the 1st rough cut is fugly.

I made it too tall on purpose but the 1st rough cut is fugly.


It sanded up rather nicely.

It sanded up rather nicely.


Pinhole mount coming along.

Pinhole mount coming along.


Pinhole READY TO ROCK! Too much? Anyway, I'm excited.

Pinhole READY TO ROCK! Too much? Anyway, I’m excited.


Black construction paper to fill in the gaps.

Black construction paper to fill in the gaps.


The assembled beast.

The assembled beast.


Sadly, in the short term, it was not to be. I got something, but nothing to write home about.

Tree in the back yard.

Tree in the back yard.


Different scan settings. Tree in the back yard.

Different scan settings. Tree in the back yard.


I’m not completely ignorant about exposure. Something is going on with the scanner. I even tried an emergency, 1/2 the focal distance (f/128-ish) cardboard box.

Maybe this will help.

Maybe this will help.


Not happy with the results, I had to implement plan C. I replaced the scanner with print paper.

The super-complex, 8x10 print paper taped to a piece of foam board version.

The super-complex, 8×10 print paper taped to a piece of foam board version.


The result is pretty sweet. I’m not insane (about this any way) and the camera works well.

Tree in the back yard. Inexpensive Arista photo paper negative. Metered for ISO 6 at f/256.

Tree in the back yard. Inexpensive Arista photo paper negative. Metered for ISO 6 at f/256.

I’m up late and it’s actually May 1st. At about 3:00 PM local time I’ll cover the shutter and find out if the long exposure worked.

52 Cameras: Apple QuickTake 200 Viewfinder Parallax

A YouTube viewer asked about the parallax error when using the clip-on optical viewfinder. I did a quick & dirty experiment to find out. Original Quicktake 200 post is here.

The 3 focus ranges are 9-13cm for close-up, 45-90cm for portrait, & 90cm-infinity for landscape. The manual says, “IMPORTANT Do not use the close-up focus when you use the viewfinder. It is not accurate.” I didn’t bother with the close up setting but the next worst parallax would be the nearest focus of the portrait setting. The manual also says, “Estimate the focal distance from the front surface of the LCD screen to the object being photographed.” The LCD is on the back so I guess they mean its surface.

I put this on the wall in the kitchen.

Sometimes, science is ugly.

Sometimes, science is ugly.


I put the camera on a small tripod, and measured the distance to the wall so the LCD was 45cm away. I looked as straight through the viewfinder as I could and held still while M slid her finger along the ruler toward the center until I could see it. We repeated that for left, right, top, and bottom. The measurements are just relative to each other, not meaningful in themselves.

Left: 29cm, Right: 67cm, Top: 10cm, Bottom: 37cm

Next, I snapped a picture with the camera in the same place. Ignore the date & time – I didn’t set the camera’s clock.

I used composite out to the old TV instead of digging out the old laptop and Smartmedia floppy adapter.

I used composite out to the old TV instead of digging out the old laptop and Smartmedia floppy adapter.


The image captured these measurements.

Left: 28cm, Right: 60cm, Top: 13cm, Bottom: 38cm

I was a little off reading the ruler. This diagram shows the relationship of the viewfinder view and the sensor image.

Pretty wide angle and not too bad for a cheap plastic clip-on viewfinder.

Pretty wide angle and not too bad for a cheap plastic clip-on viewfinder.

52 Cameras: Nikon Coolpix L310


Nikon still has the manual here.



A photo that was on the SD card when I got the camera.
 The previous owner had a lot of bird images.

The previous owner had a lot of bird images.


I’ll do a separate “Phound Photos” post. The card had images from 14 Dec 2012 to 11 Jul 2013.

McPigeons in Bernalillo, NM.

McPigeons in Bernalillo, NM.


Goober.

Goober.


Storm over the Jemez Mountains.

Storm over the Jemez Mountains.


Not a scene mode but it has settings for B&W, sepia, cyanotype, & vivid.

Not a scene mode but it has settings for B&W, sepia, cyanotype, & vivid.


Doorbell & shadow.

Doorbell & shadow.

Mercury Transiting the Sun 11 November 2019

It was super windy and the old 400mm definitely does not have image stabilization. I got lucky during a short lull.

Sony A7, Aperture Priority, 1/60 second, Fotodiox FD-E adapter, Prospec 400mm (FD) @ f8, Vivitar 2X Teleconverter

Sony A7, Aperture Priority, 1/60 second, Fotodiox FD-E adapter, Prospec 400mm (FD) @ f8, Vivitar 2X Teleconverter


The teleconverter loses 2 stops plus the filter material I had left over from the eclipse. Mercury is at about 1:00. Not great but comparable to the live stream from the Griffith Observatory. I may be alive the next time it’s visible from North America but who knows? Best to grab it while I can.

52 Cameras: #187 – Canon PowerShot G10

Things I missed or glossed over in the video:

Canon still has the manual.

Scene modes: Portrait – “soft effect”, Landscape – deep DoF, Night Scene – slow shutter + flash, Sports – continuous shooting with AF, Night Snapshot – reduces camera shake (boosts ISO & shutter?), Kids & Pets, Indoor, Sunset, Foliage, Snow, Beach, Fireworks, Aquarium, Underwater, ISO 3200 (2X normal highest), and Color Swap.

Metering modes: Evaluative, Center weighted average, Spot AE Point/Center – spot metering is whatever is in the center of the LCD, and Spot AE Point/AF Point – AE point follows AF point (only works with FlexiZone AF selected).



No exposure modifications except the bird photo.
Some crops. For a P&S, it tolerates crops pretty well.

Jem doing what cats do.

Jem doing what cats do.


Open house at New Mexico Wildlife Center was awesome. It’s not on their web site yet but they have a “photographer’s day” coming up in November.
Lightened a little to bring the bird's face out of shadow.

Lightened a little to bring the bird’s face out of shadow.


Another shot of Joni. She touches a tennis ball on a stick & gets a treat.

Another shot of Joni. She touches a tennis ball on a stick & gets a treat.


Sunflowers at the co-op in Santa Fe.

Sunflowers at the co-op in Santa Fe.


I compost most things but goatheads get the flame.

I compost most things but goatheads get the flame.


An example of the exposure compensation. This is 0.

An example of the exposure compensation. This is 0.


This one is - 1/3 stop.

This one is – 1/3 stop.

52 Cameras: # 170 — Sony DSC-H7


I glossed over a lot of the features, face detect, in-camera effects like sepia and saturation, exposure compensation besides bracketing, etc. Even Sony divided the information into a setup guide, instruction manual, and handbook — probably 250 pages worth.



Phound Photos Volume 9 has some of the found images from the memory stick.


18 Jan 2019 - I used GIMP to fix the perspective & adjusted the levels.  The deep shadows fooled the meter.

18 Jan 2019 – I used GIMP to fix the perspective & adjusted the levels. The deep shadows fooled the meter.


21 Jan 2019 - Waiting for moonrise.  The camera biffed the white balance (WB) but GIMP fixed it up.

21 Jan 2019 – Waiting for moonrise. The camera biffed the white balance (WB) but GIMP fixed it up.


28 Jan 2019 - M at Plaza Cafe.

28 Jan 2019 – M at Plaza Cafe.


10 Apr 2019 - Macro is hard in high wind.  The camera did a great job during a rare lull.

10 Apr 2019 – Macro is hard in high wind. The camera did a great job during a rare lull.


10 Apr 2019 - Lupines (I think) in the yard.  Bokeh's not great but not bad.

10 Apr 2019 – Lupines (I think) in the yard. Bokeh’s not great but not bad.


10 Apr 2019 -  Shot through a filthy window at max zoom (78/465mm equiv). I tweaked WB & shadows.

10 Apr 2019 – Shot through a filthy window at max zoom (78/465mm equiv). I tweaked WB & shadows.