All Forum Comments
Comment by pentaxanne posted on Pentax K-7 Flash Problems at 23/03/2010 - 21:02
hi stefan i understand that it will work in full manual, but if i let anyone else usees it they will not be able to use the flash which i think is very poor, also the fact i paid £900 for a camera that needs to be used in full manual to get the flash to work properly.
even with the samsung sef 36pzf flash (pttl compaitable) result are dodgy.
i never had this problem with the k20d and k200d
and im not the only one with this problems it seems.
if a mod reads this can he/she change the title to pentax k7 flash problems. thanks
anne
even with the samsung sef 36pzf flash (pttl compaitable) result are dodgy.
i never had this problem with the k20d and k200d
and im not the only one with this problems it seems.
if a mod reads this can he/she change the title to pentax k7 flash problems. thanks
anne
Comment by pentaxanne posted on Pentax K-7 Flash Problems at 23/03/2010 - 17:50
mine is made by meike and its identical looking to the original, doesnt state its weather sealed. but its great for the money and the one on my d300(made by meike) has never let me down and has been in the rain with no problems.
the k7 grip is not the most comftable to hold i find, especially if you use the af button to focus.
the k7 grip is not the most comftable to hold i find, especially if you use the af button to focus.
Comment by pentaxanne posted on Cheap K7 battery grip at 23/03/2010 - 17:43
impotentspider wrote:
why did you wanna get rid of it.Quote:
there 1400 new and your version new is going to drop to around 800 so im lead to believe.
Ah, thats why I didn't get much interest in mine, methinks I'll be keeping itthere 1400 new and your version new is going to drop to around 800 so im lead to believe.
Comment by pentaxanne posted on The Sigma 150-500 at 23/03/2010 - 15:24
impotentspider wrote:
I sincerely hope it costs a fortune, else I'll have no chance of selling mine
there 1400 new and your version new is going to drop to around 800 so im lead to believe.Quote:
Are you sure hes not talking about the new 50-500mm that has just been announced?
WHATAre you sure hes not talking about the new 50-500mm that has just been announced?
I sincerely hope it costs a fortune, else I'll have no chance of selling mine
Comment by pentaxanne posted on The Sigma 150-500 at 23/03/2010 - 14:10
mike its a shame you cant share any pics taken with it as its a canon.
Comment by pentaxanne posted on The Sigma 150-500 at 23/03/2010 - 09:36
dlacouture wrote:
Well, I've made some tests, and I agree, the behavior is not that logical on the k7...
For instance, in a tungsten-lit room, Av mode set to f/1.4, Auto-iso on Slow :
* Flash off, it reads 1/40, iso 400...
* Flash set to normal, it reads 1/100, 800 iso...
* Flash Set to Slow, it reads 1/80, 800 iso
So, it bumps the iso up for no real reason...
Worse, with Auto-iso set to fast, you have the following:
* flash off, 1/160, 1600 iso (in line with the previous 1/40, 400iso)
* Flash on, 1/90, 3200 iso.
So, you end up with nearly a +2Ev overexposure without even having fired the flash!!!
Behavior with auto-iso disabled seems a little more logical, so I think Auto-iso does not really support P-TTL flash...
thanks i thought it was me, i have tried so many different things and keep coming up with the same results.Well, I've made some tests, and I agree, the behavior is not that logical on the k7...
For instance, in a tungsten-lit room, Av mode set to f/1.4, Auto-iso on Slow :
* Flash off, it reads 1/40, iso 400...
* Flash set to normal, it reads 1/100, 800 iso...
* Flash Set to Slow, it reads 1/80, 800 iso
So, it bumps the iso up for no real reason...
Worse, with Auto-iso set to fast, you have the following:
* flash off, 1/160, 1600 iso (in line with the previous 1/40, 400iso)
* Flash on, 1/90, 3200 iso.
So, you end up with nearly a +2Ev overexposure without even having fired the flash!!!
Behavior with auto-iso disabled seems a little more logical, so I think Auto-iso does not really support P-TTL flash...
i had a play again tonight and shots taken at f8 shutter speed 100th sec, and it puttin the iso up at 1000, the same shot using full manual iso 100 is spot on, also if at f8 50mm s/s 100th sec the iso will be say 1000 but if i zoom to say 200mm the iso drops down to 500 which will be underexposed but if i setn it manual it needs iso 1000.
i even get dodgy results in av mode as soon as i up the f stop it just wants to bang the iso up to 1600,
so i think its gonna have to be full manual from now on, abit of a pain.
Comment by pentaxanne posted on Pentax K-7 Flash Problems at 22/03/2010 - 23:32
lovely shot and dartmoor zoo is great.
Comment by pentaxanne posted on removing fence from lion at 21/03/2010 - 23:02
just tried on full manual with built in flash, set shutter speed 160/sec f5.6 iso 400,lens set at 200mm subject about 6.5ft away
come out good adjusted to f8 come out slightly darker as expected.
same test again but with samsung sef36 pzf flash(same as pentax 360)
set on green pttl, at f5.6 its under exposed but if i use f8 or f10 the exposure is alot better(how does that work)
also its the first time i have noticed that the flash does not want to zoom past 58mm (not noticed it with the k200d and k20d)
oh and why oh why did pentax use a black hot shoe(only put the flash on 3 times and it marked already)
come out good adjusted to f8 come out slightly darker as expected.
same test again but with samsung sef36 pzf flash(same as pentax 360)
set on green pttl, at f5.6 its under exposed but if i use f8 or f10 the exposure is alot better(how does that work)
also its the first time i have noticed that the flash does not want to zoom past 58mm (not noticed it with the k200d and k20d)
oh and why oh why did pentax use a black hot shoe(only put the flash on 3 times and it marked already)
Comment by pentaxanne posted on Pentax K-7 Flash Problems at 21/03/2010 - 00:12
Anvh wrote:
If you use it in manual and you open up the aperture then of course more light comes in ambient and flash if the flashpower doesn't change that is.
As for the shutter-speed if your flash is powerful enough you can use shutter speed of 1/10 and get perfectly sharp photos as long as the flash overpowers the ambient light a lot. the flash only takes 1/10.000 of a sec the rest of the shutterspeed is only controlling the amount of ambient light hitting the sensor, makes sense?
But we really need to know more to help you.
What flash are you using and in what kind of conductions, indoor in a room in a big hall, outdoors?
built in flash, in my house, havent even played with other flash yet.pentaxanne wrote:
in manual the iso is only selectable, and taking pics of my kids indoors i need fast shutters speeds hench flash with 180/sec speeds and if i drop the apature more in those modes it will over expose more, just seems abit flawed, my k20d i never had this problem,
In what mode, flash and camera???in manual the iso is only selectable, and taking pics of my kids indoors i need fast shutters speeds hench flash with 180/sec speeds and if i drop the apature more in those modes it will over expose more, just seems abit flawed, my k20d i never had this problem,
If you use it in manual and you open up the aperture then of course more light comes in ambient and flash if the flashpower doesn't change that is.
As for the shutter-speed if your flash is powerful enough you can use shutter speed of 1/10 and get perfectly sharp photos as long as the flash overpowers the ambient light a lot. the flash only takes 1/10.000 of a sec the rest of the shutterspeed is only controlling the amount of ambient light hitting the sensor, makes sense?
But we really need to know more to help you.
What flash are you using and in what kind of conductions, indoor in a room in a big hall, outdoors?
which is a samsung same as the pentax 360.
Comment by pentaxanne posted on Pentax K-7 Flash Problems at 20/03/2010 - 20:53
try using in apature priorty mode, say f8 using flash i expect it will use 160/sec set the iso to auto 100 to 1600, with mine it will just be way over exposed.
as far as im concerned the flash should be usable in any mode when using auto iso and it should select the right iso,
i had no problems with the k20d and k200d i had in the same modes.
thanks matt, i would be interested on your view on the built in flash to in diferent modes,