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Forum: Pentax K-70 11-03-2020, 08:24 AM  
TAv Priority - overexposure: AE/AF Point Lock?
Posted By Emirena
Replies: 10
Views: 480
Hi everyone,

I've been using TAv shutter speed and f stop priority mode a lot when taking photos outside during changing light conditions and activities like hiking or sailing where I can't always stop and take my time with fully manual exposure settings.

It's worked great on very bright days and in shade.
However, I used it on a cloudy, yet bright late afternoon (as sun was setting) and found a lot of my photos where the grey, pretty sky was in my background and dark rock was in my foreground, the ISO got set to 3200 and the resulting overexposure and additional noise was very disappointing!

I have my AE/AF points set in menu to be "linked", and AF set to center spot.

I like having my AF point being central so I can train my camera around, hit AEL button or half press to focus, switch into manual focus or hold, and the re-frame to shoot. I find moving the focus point with the 4-way buttons very arduous.

Can someone let me know if de-linking the AE/AF points would help, and if there's a way to set AE point to scene average while retaining the AF point as a central spot? I can only seem to find the settings for the AF type - perhaps because the AE/AF link setting is still set to YES?

Thank you!
Forum: Pentax K-70 10-08-2020, 01:04 PM  
Workaround 4GB/25' video limit?
Posted By Emirena
Replies: 9
Views: 779
correct!!
Forum: Pentax K-70 10-05-2020, 09:53 AM  
Workaround 4GB/25' video limit?
Posted By Emirena
Replies: 9
Views: 779
This seems the simplest test to do, but if Pentax has hardwired the 25' limit I don't feel much hope of success. I would have just used the windows partition management utility to reformat, thanks for the SW recommendation!

Really I just was hoping there would be a way to set the camera to begin recording a second video after the first completes... even missing a couple seconds.

I'm using this to shoot climbing footage so HDMI out in a forest or on a trail is not happening but audio is relatively unnecessary - even though the built in recording function works quite well on the k-70 unless there's wind, of course!



🤦🤦🤦🤦
Forum: Pentax K-70 10-04-2020, 08:18 PM  
Workaround 4GB/25' video limit?
Posted By Emirena
Replies: 9
Views: 779
Is there a way to either increase the max filesize/video time limit when shooting on the K70? I thought this was a FAT32 filesystem restriction, but I doubt that exFAT Or NTFS formatting would work when you plug the card back into the camera.

Has anyone tried reformatting as different filesystem?

Is there a way to set video to immediately begin shooting another file when maximum is reached?

I was reminded of this limitation the hard way and not quite sure how much footage i lost... :(
Forum: Pentax K-1 07-20-2020, 03:28 PM  
Just about at my wits end with remote O-RC1
Posted By Emirena
Replies: 13
Views: 1,859
I have a k70. so, uh. What do the Fn and tree buttons do?
Forum: Troubleshooting and Beginner Help 04-21-2020, 01:26 PM  
Pentax K-70 reverser ring + da 1:2.4 35mm AL
Posted By Emirena
Replies: 6
Views: 603
That did it! I just finally got a chance to test this and a piece of foil works just fine. I'll have to experiment with a way to remove the coating, it's very hard. But the foil stays in place.

Still no way to focus the DA, and have to finger the aperture manually which is rough considering I need to use pretty slow shutter for this application. I'll drag out my tripod next. Any recommendation for controller rings for the aperture?

I'll buy the fotodiox 52mm adapter for my asahi pentax 55mm f/2 since it has a focus ring, unless when you say OEM adapter do you mean pentax makes reversing rings themselves?

here's a couple quick tests. Definitely magnified!



Forum: Troubleshooting and Beginner Help 04-10-2020, 09:21 PM  
Pentax K-70 reverser ring + da 1:2.4 35mm AL
Posted By Emirena
Replies: 6
Views: 603
Liveview because no viewfinder image, which freaked me out. Did finger aperture so I could see something on live view.

Seems you might be right then about not being able to reverse DA lens.

Will probably waste another $6 to buy the reverser ring for the appropriate size to test the full manual k1000 lens (asahi Pentax), probably bodes better.

Using just this at the moment and would buy same thing in 58mm filter size for asahi Pentax lens:
FotodioX 49mm Reverse Mount Macro Adapter REVERSE-MOUNT-49MM-PK
Forum: Troubleshooting and Beginner Help 04-09-2020, 07:31 PM  
Pentax K-70 reverser ring + da 1:2.4 35mm AL
Posted By Emirena
Replies: 6
Views: 603
I'm testing out a reverser ring with my pentax-da 1:2.4 35mm AL.

Obviously I can't focus it manually but planned to get a reverser ring for my k-1000 vintage asahi Pentax 1:2 55mm./ Which offers manual focus.

I figured out how to finger the aperture lever to open up for light and some DOF control, but all the images, whether raw or jpg, are recording black on memory card.

I have input focal length turned on and correct # input, etc. Can't find other relevant menu items...help?
Forum: Pentax SLR Lens Discussion 12-19-2019, 05:23 PM  
AF lens to infinity - lowlight tips
Posted By Emirena
Replies: 10
Views: 872
Thanks for the replies everyone!

I will increase the LV zoom and use that method to manually focus on stars or moon. I have found the full moon is almost too bright (I do always use center metering) and does make the k70 and either zoom Lens hunt and not focus as perfectly as my eye can.

I have had fun doing some light painting with LED flashlights, and just got an IR shutter release so now I can do bulb mode mirror up exposures for minutes :)

I have a Rokinon 10mm ultrawide that I'll use for true astrophotography with the remote release now. No gps unit for k70 startracer mode, but I'm sure it's not necessary at this point.

Is a couple hundred feet away at f5.6 with 100-300mm sufficient focus point to cover infinity? I did use that method shooting at night a couple months ago but didn't have remote or tripod, so did my best with a stone wall and gentle button presses.

I'll keep my two zoom lenses as recommended and put the macro 100mm on my long term wishlist along with a teleconverter.

I suppose my only remaining nitpick is that i can't appreciate the relationship between DOF, focus point and f stop as a newbie photographer as easily without lens ring labeling.

Come to think of it, I used my mom's k1000 55mm prime today and the marking for 8ft
distance towards infinity was a red tick (I think) instead of white. Any idea what this indicates?
Forum: Pentax SLR Lens Discussion 11-08-2019, 12:41 PM  
AF lens to infinity - lowlight tips
Posted By Emirena
Replies: 10
Views: 872
I own a K-70 with kit DA 18-135mm f/3.5-5.6 ED AL (IF) DC WR and the lovely HD DA 55-300mm f/4.5-6.3 ED PLM WR RE.

As a newbie hobbyist photographer, I'm trying to practice estimating DOF and focus distance. I also love to take photos of the moon and night sky.

Because these are entirely autofocus lenses, the focus ring does not stop in either direction - it turns 360 degrees continuously and it is not clear when it has focused at infinity!

I would trade in one or both of these lenses for credit towards the smc Pentax-DA 18-270mm f/3.5-6.3 ED SDM, but the fact that this model is not WR (I shoot by the ocean and from boats frequently) and the cost are both making me debate whether to replac, the 18-135, the 55-300, both, or neither....

1.) tips for focusing my existing zoom lenses to infinity, especially in low light or with manual focus? I have live view zoom set to 8x but it's still difficult to judge for things like the moon and stars.

2.) suggested lenses and/or which of existing zooms to trade in? the 18-270 and macro 100mm 2.8 with an added tele converter are both appealing options. the macro would be the first 1:1 lens I own, I believe one of my zoom lenses currently has the best magnification ratio of just under 1/3 life size.
Forum: Monthly Photo Contests 08-10-2018, 06:35 AM  
A Very British Festival
Posted By Emirena
Replies: 3
Views: 338
I would like to nominate this photo
Forum: Pentax K-70 07-26-2018, 07:20 AM  
Cleaning saltwater residue from the K-70 body & WR lens
Posted By Emirena
Replies: 14
Views: 1,437
Thanks for the tips.

Before the Marine Max cleanser arrived I just poured some distilled (room temp) water over the whole camera and lens (UV filter ON) and let air dry.

Marine max recommended towel drying so I used one of these towels: amazon.com: VibraWipe Microfiber Cleaning Cloths, 4 Colors, 8-Pieces. HIGH ABSORBENT, LINT-FREE, STREAK-FREE: Automotive?tag=pentaxforums-20&

Both water and the marine max fluid left streaks etc on my UV filter so I added some lens cleaning solution to the magic fiber cloth that came with my lens cleaning kit and wiped.

How gentle should I be on the UV Filter? It took a couple of passes with the lens cleaner moistened magic fiber cloth before all the streaks were removed, so I got a little nervous I might have used too much elbow grease. Cleaning

kit ( amazon.com: Altura Photo Professional Cleaning Kit for DSLR Cameras and Sensors Bundle with APS-C Sensor Cleaning Swabs and Carry Case: Electronics?tag=pentaxforums-20& ) also came with "cleaning tissue paper" but I feel like those would be pointless when I'm in seaspray and rain that is blowing enough to get under my lens hood and make the lens/UV filter all wet. Guessing they're more for dust / small drops / minimal cleaning...?

Yesterday's rain made me stop shooting because I couldn't keep droplets off the glass for more than 30" and didn't feel like continuously opening my pocket for a microfiber cloth that would also end up sodden with seawater in the end...
Forum: Pentax K-70 07-20-2018, 09:22 PM  
Cleaning saltwater residue from the K-70 body & WR lens
Posted By Emirena
Replies: 14
Views: 1,437
Hi everyone,

I bought the K-70 last week as my first foray into DSLRs - step up from older Sony cybershoot I got very comfortable with in manual mode. A big draw was the weatherproofing - saltwater shooting season after season of sailing killed off my Sony after ~4 years. I've made some amateur mistakes already - took it out thrice in aforementioned sea conditions without a UV filter installed yet, then rubbed lens with microfiber cloth. I'm putting the UV filter on from now on, and awaiting a lens cleaning kit from amazon, since manual warns against organic and ammonia based cleaners.

Question:
How best can I remove salt build-up from the body? I read while poking around these forums that some users "rinse" their cameras gently, but I'm chicken to do it without specific instruction.

I found this thread with a purported video demo but the file seems broken now: How to clean ?salt? out of the shutter release button? - PentaxForums.com

Also, can distilled water be used to clean lens or should I just wait til official "lens cleaning solution" arrives to attempt to perfect my lens?

Thanks! Nervous about this fine investment.
Forum: Pentax K-70 07-16-2018, 10:18 AM  
manual mode: EV +/- , multi-exposure composite
Posted By Emirena
Replies: 19
Views: 2,371
Thanks for clearing up the EV vs EC confusion. I was trying to find more information on how to use and read the EV meter in different conditions but the manual is not so helpful. Screenshot helped. Green button just resets to defaults, correct? The insight that EC dial was oft. linked to film speed control on film SLRs makes a lot of sense.

I ended up shooting some daytime sailing photos in Av mode depending on whether I wanted to focus on subjects on my boat (1-10M distance) or distant ones. I used continuous shooting since there's so much action, but didn't try bracketing because the exposure looked decent with ISO 400-800 (and for fear of filling up my memory card). I did seem to very slightly underexpose most photos, but preferred not losing the cloud definition on the hazy, bright sky and horizon. It's tough to expose for dark water and harsh sunlight. Shadow compensation level 2 seemed to help reduce facial shadows on people. I just processed any RAW files (or double processed and photoshopped a composite) to retain exposure for both sky and people/boats.

So far so good besides some mis-focused photos at wide aperture and some lack of defintion/contrast/focus ability for subjects at extreme distances with longer focal length and narrow aperture: 07/15/2018 Ron-bo: First Blood | Flickr

Is there a flowchart or better explanation of the user interface for P-Line mode and program modes? It's not so intuitive. Does P mode retain exposure value as shutter speed or aperture are adjusted, too?

for what it's worth I don't trust auto ISO or auto exposure of any kind. tested exposure lock function but it seems to only hold for one shot, and must be for use with auto exposure. Guessing I should ignore Exposure lock for most cases.

I did use manual mode exclusively when shooting indoors to try out the 35mm lens from the K-1000. Exposure was touchy but I was in terrible indoor tungsten lighting. Managed to (finally) properly expose for a 1.5" shutter time for practice to get a nice symmetrical motion blur on a clock pendulum, just to see if I could. Invested in a white balance card for any more indoor shooting I do, AWB is terrible as is the tungsten compensation (to be expected).

Thanks again! I'm already loving the K-70, but it's quite a sack of potatos and I managed to scratch the lens ring edge a little already. Heavy duty chest strap I purchased ( amazon.com : Voking VK-Q5 Camera Universal Shoulder Neck Strap Belt Adjustable Comfortable Quick Release Safety Tether for DSLR Camera : Camera & Photo?tag=pentaxforums-20& ) hangs it a little too low for my liking, even maximally tightened, where it can bash into things. Going to have to figure out better protection, perhaps stuffing it in the camera bag whenever I'm not shooting.
Forum: Pentax K-70 07-14-2018, 09:10 PM  
manual mode: EV +/- , multi-exposure composite
Posted By Emirena
Replies: 19
Views: 2,371
Greetings,

Just started playing with my new K-70, first DSLR.

Pardon if these are amateur questions.

1.) I noticed when attempting to adjust EV compensation in manual mode that there is no indicator on live view nor the viewfinder overlay of any adjustment, however the camera menu takes any input I give.

Further, I don't see any difference in photos taken. I assume I'm just meant to adjust all factors in the exposure triangle myself - sensitivity, aperture and shutter speed - but then why does the camera's firmware permit EV +/- button to function in manual mode?

2.) I attempted to test all three (additive, average and bright) composite exposure shooting with a 3-image base in a dark park with bright lamps
My goal being to have some definition in the brightest portion of the image without underexposing the background and save myself time and sweat in photoshop.

I was hoping I could do something similar when shooting sunsets to retain some of the defintion and/or outline of the sun/lamp/light source... is bracketing mode a better alternative? HDR shooting? If anyone has a process I can practice, I would love to hear tips. Thanks!

finally, Is there a way to view each individual component shot of the composites? I didn't see any on the SD card nor in the packaged software viewer on PC.

3.) Program Line mode - did some research on this - I most often shoot at evening sailboat races, and the sun sets and lighting changes rapidly. I'd like to be able to easily/automatically retain a good exposure as the sunlight fades, and retain my aperture settings for depth of field since I'm out in a "landscape" environment, adjusting only to take portraits. shutter speed is less important. Is program line or Av mode the best to use here? I suppose I could do what I did on my last point and shoot camera and use EV bracketing, but as per 1.) I'm scratching my head over whether this even functions in manual shooting....


Thanks so much in advance! I'm thrilled with the camera's reliability, weatherproofing, and the lens quality... just barely tested out a hand-me-down K-1000 1:2 55mm lens which has some very cool macro/depth of field capabilities at wider apertures.
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