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Hotspot on my IR - 23-10-2007, 10:08

Suhu2 sekalian saya lagi belajar foto IR nih.. pake 350D kit + Hoya R72. gambar yagn saya ambil selalu ada hotspot di tengah.. kadang ada yang jelas banget dan beberapa cuma samar2 tapi sangat mengganggu..

penyebabnya apa yah? apakah kualitas lensa nya ga ga bagus atau tekniknya yang salah?
foto yang saya attach di bawah saya ambil dengan cara
1. kamera dipasang di tripod, cari fokus dengan AF
2. pasang filter, ganti fokus ke manual
3. jepret.. shutter pake 2detik f/5 dan ISO 800

saya attach contoh foto mentah nya..hotspot.jpg

Dimana letak kesalahan nya ya.. mohon pencerahan nya ya para suhu..
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Re: Hotspot on my IR - 23-10-2007, 10:34

Sama bro yg gw alamin pas moto IR. Punya situ msh mending, punya gw hotsoptnya parah bngt
Kt nya sih pengaruh lensanya, gw waktu itu pake sigma 18-125 + 20D




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Re: Hotspot on my IR - 23-10-2007, 11:10

walah jadi masalah lensa bos? lalu lensa murmer yang paling bagus buat moto IR apa yah


trims
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Re: Hotspot on my IR - 23-10-2007, 22:57

lalu solusinya gimana bro kalo gini? pas pengen njajal filter IR jg euy.. but rata2 saya kalo lihat pada jalan di f/8 (dibyo) atau f/11 (harlim) yah?


banyak yg merasa bisa, but sedikit yang bisa merasa


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Re: Hotspot on my IR - 24-10-2007, 09:55

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Originally Posted by jozzy View Post
lalu solusinya gimana bro kalo gini? pas pengen njajal filter IR jg euy.. but rata2 saya kalo lihat pada jalan di f/8 (dibyo) atau f/11 (harlim) yah?
Gimana kalo bro Jozzy tes pake filter aja dulu.. lensa situ kan yahuud punya.
Yg gw cobain foto di tengah hari bolong yang cerah, iso 400, dengan bukaan gede aja shutter nya paling cepet 1 detik, gw rasa susah deh kalo pengen dapet bukaan sekecil itu tanpa dioprek..
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Re: Hotspot on my IR - 24-10-2007, 11:29

Dpt tips dari tmn kl IR pake iso maks 200 aja buat ngurangin noise
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Re: Hotspot on my IR - 24-10-2007, 11:35

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Originally Posted by ferdi View Post
Gimana kalo bro Jozzy tes pake filter aja dulu.. lensa situ kan yahuud punya.
Yg gw cobain foto di tengah hari bolong yang cerah, iso 400, dengan bukaan gede aja shutter nya paling cepet 1 detik, gw rasa susah deh kalo pengen dapet bukaan sekecil itu tanpa dioprek..
lha bro ada filter R72 ring 58mm ? sini tak pinjem hehehe
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Re: Hotspot on my IR - 24-10-2007, 11:55

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Originally Posted by yurisr View Post
Dpt tips dari tmn kl IR pake iso maks 200 aja buat ngurangin noise
emang sih pake 400 setelah diolah di PS, kena auto level dan channel mixer, noise nya jadi keluar..

mungkin ga sih hotspot muncul karena shutter yang kelamaan?
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Re: Hotspot on my IR - 24-10-2007, 11:56

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Originally Posted by jozzy View Post
lha bro ada filter R72 ring 58mm ? sini tak pinjem hehehe
Serius Bro? gw pake yg 58mm .. kalo ada hunting bareng ikut aja.. pengen liat 40D nihh
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Re: Hotspot on my IR - 24-10-2007, 14:05

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Originally Posted by ferdi View Post
emang sih pake 400 setelah diolah di PS, kena auto level dan channel mixer, noise nya jadi keluar..

mungkin ga sih hotspot muncul karena shutter yang kelamaan?
Kyknya ga deh, soalny gw waktu itu speednya dpt 1/15 tetep aja hot spotnya parah
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