Electronic shutter on K1
Electronic shutter is a very new concept here, in a DSLR context ..... Could you, or anyone, explain what it is and how to operate it on the K1 .... That would certainly aid understanding and help here I think.
What exposure mode were you using? Are you certain that the exposure settings were identical between the two? Especially the exposure time ....
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver
Both were 1/30 s using manual exposure. Tripod is rated for 5.4kg and head is rated for 4kg. SR was off, and I was using a remote to trigger.
Electronic shutter works (i think )in LV by electrically resetting the (already exposed) sensor so the image starts to be recorded. The trailing mechanical shutter then "closes" the exposure.
I will try and do some more extensive tests tomoorow at varying shutter speeds.
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The red flash does not indicate correct focus, just the point being focused on. The green hexagon at the bottom of the frame should be steady, not flashing, which indicates focus has been achieved.
I should have said the red flash from the focus frame which coincides with the green hexagon and bleep. As I no longer have the eyes of a twenty year-old I use the focus assist in manual mode as well.
Am I right to understand that the physical shutter is open for some period prior to an exposure being taken with the electronic shutter feature?
The only other thing to ask is what was the length of time between raising the mirror and releasing the shutter when using a normal 'mirror up' technique? I usually pause for at least 3 secs or so .....
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver
Am I right to understand that the physical shutter is open for some period prior to an exposure being taken with the electronic shutter feature?
The only other thing to ask is what was the length of time between raising the mirror and releasing the shutter when using a normal 'mirror up' technique? I usually pause for at least 3 secs or so .....
Nigel
The electronic shutter can only be used in live view, so yes the mirror and shutter is open while I focus. As I understand it only the trailing shutter operates to end the exposure.... any vibration from this is too late to affect the image.
When using mirror lock up I was waiting anything from 2 to 5 seconds before triggering the shutter with the same results.
I am thinking it is my tripod/head. Although rated at 5kg and 4 kg respectively, I think they are not up the job when using almost 2.5 kg of kit. More experimentation to follow, but a bit of testing in the kitchen last night did seem to show that the shutter speeds in the 1/30 to 1/90 range produced the worst results, with graduated improvement as speeds got slower or faster than these
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I normally use SR ON with big lenses even with a tripod. You have to use the release on the camera by hand. SR switches off with IR enabled.
This is one area where in lens SR is better because it can be used easily on a tripod.
Try this test with a 50mm lens to see how it works out.
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Pentax K-1 + K-5 and some other stuff
Algi
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver
" I was getting what I assume to be shutter induced shake. Trying the mirror lock-up made no difference. I then tried the electronic shutter feature in live view and it nailed it. This was repeatable time and time again."
No further explanation necessary.
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Pentax K-1 + K-5 and some other stuff
Algi
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver
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5083 posts
17 years
Surrey
I was getting what I assume to be shutter induced shake. Trying the mirror lock-up made no difference. I then tried the electronic shutter feature in live view and it nailed it. This was repeatable time and time again.
Have a look at the two photos (100% crops) to see the difference. is this what is to be expected as the difference between shutter and electronic shutter.... or is my tripod not up to scratch ?
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