Offically a Minoltian
- Thread starter satay16
- Start date
- Status
tankm
Senior Member
Satay16....antere is selling off his whole KM set and in it is the Sigma 18-50 f2.8. He did say the lens is better after rechipping. You may want to inquire Sigma about this to address your backfocusing problem with this lens.
http://forums.clubsnap.org/showthread.php?t=221654
http://forums.clubsnap.org/showthread.php?t=221654
satay16
Senior Member
tankm said:
yah, had a short conversation with him through PM. his problem was excatly the same as mine b4 rechipping!!!!
finally!!!! the truth has revealed:cheergal: :cheergal: for a while, i was thinking of selling this lens because of this problem. will be visiting sigma soon.
Timber Wolf
Senior Member
satay16 said:yah, had a short conversation with him through PM. his problem was excatly the same as mine b4 rechipping!!!!
for a while, i was thinking of selling this lens because of this problem. will be visiting sigma soon.
Hehhhhh... told you to get it checked out at Sigma ages ago. Don't think it'll solve ur slow focusing problem though.
Cheers
QX
Hey Guys,
I need some help with front/back focussing issue on my KM 5D and hope my queries are relevant to this thread.
Recently, I got hold of a Tokina 100-300 f4 (old red ring version) and I really love the sharpness from 100-220mm. Anything beyond 220 suffered from softness at ANY aperture 95% of the time. Occasionally, I got a sharp shot at 300 mm even wide open at f4! I began to suspect that the lens needs calibration.
Last night, did a test using my Tokina 100-300 (at various focal lengths) and Tamron 24-135 (at 135mm) using a target of 3 AA batteries arrange about 10mm apart (front to back). I was shocked to find that my camera back focuses (or is it front focus???). I focused on the middle battery, but all my shots came out with the rear battery in focus.
I am contemplating sending my camera to Sony for focus calibration.
Has anyone had similar problem for 5D? Most of the threads on back/front focussing involves the 7D.
Also, about how long does it take to recalibrate the camera?
Thank you in advance.
I need some help with front/back focussing issue on my KM 5D and hope my queries are relevant to this thread.
Recently, I got hold of a Tokina 100-300 f4 (old red ring version) and I really love the sharpness from 100-220mm. Anything beyond 220 suffered from softness at ANY aperture 95% of the time. Occasionally, I got a sharp shot at 300 mm even wide open at f4! I began to suspect that the lens needs calibration.
Last night, did a test using my Tokina 100-300 (at various focal lengths) and Tamron 24-135 (at 135mm) using a target of 3 AA batteries arrange about 10mm apart (front to back). I was shocked to find that my camera back focuses (or is it front focus???). I focused on the middle battery, but all my shots came out with the rear battery in focus.
I am contemplating sending my camera to Sony for focus calibration.
Has anyone had similar problem for 5D? Most of the threads on back/front focussing involves the 7D.
Also, about how long does it take to recalibrate the camera?
Thank you in advance.
tankm
Senior Member
For taking photos of "Stars" you may want to visit the "Night Photography" forum in CS. Lots of info there. http://forums.clubsnap.org/forumdisplay.php?f=85
Depend what you intend to take, "star trails" or "static star" ? Most uses multiple exposure and do stacking using software. This is to reduce the noise, and increase clarity of the star. The star look static but it moves all the time, hence long exposure greater than 30 seconds may not be the best option. I also newbie to star photography, still learning all the bits.
Manage to take any nice moon shot recently ?
Depend what you intend to take, "star trails" or "static star" ? Most uses multiple exposure and do stacking using software. This is to reduce the noise, and increase clarity of the star. The star look static but it moves all the time, hence long exposure greater than 30 seconds may not be the best option. I also newbie to star photography, still learning all the bits.
Manage to take any nice moon shot recently ?
yokechye said:
tankm
Senior Member
Have you tried with a Minolta or KM lens ? Same problem ? If it's the same problem, with the Minolta/KM lens it will be easier to have it corrected by SONY SC. If it's only 3rd party lens, it's a harder case.
Have meet with another fellow CS KM5D having similar problem. Not sure if he did send in to SONY SC to get it corrected.
Have meet with another fellow CS KM5D having similar problem. Not sure if he did send in to SONY SC to get it corrected.
andrewlee said:
yokechye
Senior Member
yesterday when i drove out of sentosa, i saw a big moon in the sky.. so big... quickly find a place to stop my car and me n my gf took out our cameras and start shooting the Moon. haha!tankm said:For taking photos of "Stars" you may want to visit the "Night Photography" forum in CS. Lots of info there. http://forums.clubsnap.org/forumdisplay.php?f=85
Depend what you intend to take, "star trails" or "static star" ? Most uses multiple exposure and do stacking using software. This is to reduce the noise, and increase clarity of the star. The star look static but it moves all the time, hence long exposure greater than 30 seconds may not be the best option. I also newbie to star photography, still learning all the bits.
Manage to take any nice moon shot recently ?
tankm
Senior Member
Not bad... glad you use it more often. :thumbsup:
Not sure if you know of this, the moon is always the same size. It seems to be bigger when closer to horizon then when higher up in the sky. Was fooled once, after taking picture and compare the size, then read more about it...only an optical illusion. :embrass:
Not sure if you know of this, the moon is always the same size. It seems to be bigger when closer to horizon then when higher up in the sky. Was fooled once, after taking picture and compare the size, then read more about it...only an optical illusion. :embrass:
yokechye said:yesterday when i drove out of sentosa, i saw a big moon in the sky.. so big... quickly find a place to stop my car and me n my gf took out our cameras and start shooting the Moon. haha!
Del_CtrlnoAlt
Senior Member
yokechye said:
moon never rotate ar... hmm... something new... :bsmilie:
no wonder 1 side so smooth, 1 side so rough...
then go to menu and set the option to remember file numbering, it will be back again. :sweatsm:yokechye said:i dunno wor :cry:
yesterday, i on my camera, then it prompt me to set date and time... is it because of that, my shutter count reset? i nv format my card wor...
its a bug.
satay16
Senior Member
tankm said:
was particularly intrigued by this fact. never did i even knew the moon looked larger on the horizon.
. was thinking about this question for the past few hours(prelims ended, lots of free time ), and tried to come with some mathematical proof for it. i did a search on the internet and all were saying about it being an optical illusion. having nothing to do, and also having quite a keen interest in physics, i tried drawing out some orbits and diagrams. however, an accidental sketch suddenly seemed to debunk about the moon being larger on the horizon, rather, the moon is actually smaller on the horizon!! and this is not the "optical illusion" small, but really, it is smaller on the horizon! slightly smaller i would say.
here was what i sketched out(made tidier by MS Word):
and as you can see, H>S ! so the moon IS further at the horizon as compared to the sky! strange. any spottable flaws?
ps: i know i know, i am damn bored.:sweat:
- Status
Similar threads
