ARMA GEDON
Kamis, 27 Februari 2014
Etika Beremail: Membalas Email & Cegah Penyebaran Virus via Email
Dalam membalas email sebaiknya
kita memperhatikan hal-hal berikuyt ini:
1. 1
Hati-hati dengan pilihan REPLY ALL. Pastikan
hanya orang yang benar-benar membutuhkan balasan yang mendapatkan email balasn
anda.
2. 2
Hati-hati ketika membalas email dalam sebuah
daftar distribusi tidak semua tidak semua orang ingin mendapatkan ucapan
6terimakasih.
3. 3
Ubah Subjek email balasan jika anda menambah
informasi pada sebuah email, mungkmin akan lebih berguna jika anda merubah
subjek email, sesuai dengan isinya.
Virus komputer berpindah dari
satu komputer ke komputer lain dengan cara menumpang pada program lainnya.
Salah cara efektif yang dipakai oleh virus adalah dengan menumpang pada email.
Email ini nantinya bias menyebar ke ratusan atau bahkan ribuan alamat email
lain.
Email yang bervirus biasanya
menyertakan sebuah file attachment yang akan menularkan virus ke komputer lokal
apabila si penerima email membuka file attachment tersebut. Cara pencegahan
penularan virus via file attachment masih tergolong mudah, yakni dengan cara
memblokir file yang berpotensi mengandung virus.
Selain melalui file attachment,
teknik penyebaran virus via email bisa juga memanfaatkan kemampuan pengiriman
email dalam format HTML. Format HTML dalam pengiriman email memungkinkan
seseorang mengirimkan gambar dan suara atau juga script lainnya. Kemampuan ini
lah yang sering di manfaatkan untuk menyisipkan script-script “jahat” yang bisa
berbahaya bagi komputer kita.
Untuk menanggulangi teknik ini
adalah dengan cara mengkonversi format HTML email ke plain text. Berikut
caranya:
1.
[Start]>[All programs]>[Outlook Express]
2.
Klik menu [Tools]>[Options]
3.
Klik tab [Read]
4.
Cek pada Checkbox [Read all messages in plain
text]
5.
Klik [OK]
Saat ini Anda tidak akan menerima
lagi email dalam format HTML. Semua pesan akan dikonversi secara otomatis
menjadi teks murni (plain text).
Selamat mencoba!
Salam,
IT Support
Minggu, 03 November 2013
Canon EOS 60D Review
Canon's
X0D series has throughout its life appealed to a wide range of
photographers, from enthusiasts and semi-pros through to some pros who
appreciated having a lightweight option. Each model offered a high
enough specification (usually in terms of build quality and AF
sophistication) to ensure it was both aspirational and attainable for
users who had out-grown their Rebel/XX0D series. However, the feature
set always left a sizeable gap below the company's full-blown 'pro'
models.
The arrival of the EOS 7D, with its highly configurable 19-point AF system and 8 frames per second continuous shooting capability changed much of this - here was a 'mini 1D' that drew the attention of many people who previously would have been X0D customers. However, the price tag (a 30% premium over the 50D at launch) pushed it beyond the reach of most people who weren't making at least a bit of money from their photography.
The 50D (and by extension the X0D range) was starting to look somewhat redundant: expensive (and in some ways outdated) compared to the rebel T2i (EOS 550D), underpowered compared to the EOS 7D. It seemed obvious that Canon needed something to balance out the EOS range to fill the big gap between the Rebel and the 7D. And so we have this, the EOS 60D.
With the 60D Canon has unashamedly moved the X0D range out of the 'semi pro' bracket and instead focused on the enthusiast photographer looking to upgrade from their Rebel. As a result, it's not the obvious continuation of the 30D - 40D - 50D pattern that its naming might suggest. Instead it sits pretty well precisely in the same market position as was once-upon-a-time occupied by the 'Elan' series of 35mm film SLRs (which in Europe were not-so-coincidentally given double-digit model numbers).
So gone is the magnesium alloy construction that featured in previous models, replaced by a lighter weight plastic shell. Naturally the 60D gains some key 'step up' features from the Rebel line (top panel LCD, rear control dial, higher burst rate), including a few that have trickled down from the EOS 7D. There's also a video- (and tripod-) friendly 3:2 ratio articulated LCD. In imaging terms it brings the EOS mid-range in line with those above and below by upping the sensor resolution to around 18MP and adding full HD movie capture.
The EOS 60D also gains a couple of brand-new features of its own. There's now a wide range of color variations (or 'Ambiences') which can be applied to the image when using the scene modes, and whose effect can be previewed on screen in Live View. The 60D also finally gains the ability to convert raw files to jpeg in-camera, including the option to correct for lens aberrations including distortion and chromatic aberration. As an added bonus, you can retrospectively apply new 'Creative Filters' to files you've shot, including 'Grainy Black and White' and 'Toy Camera' looks.
And so, from a spec and feature point of view, the EOS 60D sits almost exactly half-way between the EOS 550D and the EOS 7D, with a few new tricks of its own. Which, we think, is exactly where it should be (regardless of the inevitable howls of protest at the apparent 'dumbing down' of the venerable X0D line).
Conclusion / recommendation / ratings are based on the opinion of the author, we recommend that you read the entire review before making any decision. Images which can be viewed at a larger size have a small magnifying glass icon in the bottom right corner of them, click to display a larger image in a new window.
To navigate this article simply use the next / previous page buttons or jump to a specific page by using the drop-down list in the navigation bar at the top of the page. You can support this site by ordering through the affiliate links shown at the bottom of each page (where available).
This article is protected by Copyright and may not be reproduced in part or as a whole in any electronic or printed medium without prior permission from the author.
Dpreview use calibrated monitors at the PC normal gamma 2.2, this means that on our monitors we can make out the difference between all of the grayscale blocks below. We recommend to make the most of this review you should be able to see the difference (at least) between X,Y and Z and ideally also A, B and C.
The arrival of the EOS 7D, with its highly configurable 19-point AF system and 8 frames per second continuous shooting capability changed much of this - here was a 'mini 1D' that drew the attention of many people who previously would have been X0D customers. However, the price tag (a 30% premium over the 50D at launch) pushed it beyond the reach of most people who weren't making at least a bit of money from their photography.
The 50D (and by extension the X0D range) was starting to look somewhat redundant: expensive (and in some ways outdated) compared to the rebel T2i (EOS 550D), underpowered compared to the EOS 7D. It seemed obvious that Canon needed something to balance out the EOS range to fill the big gap between the Rebel and the 7D. And so we have this, the EOS 60D.
With the 60D Canon has unashamedly moved the X0D range out of the 'semi pro' bracket and instead focused on the enthusiast photographer looking to upgrade from their Rebel. As a result, it's not the obvious continuation of the 30D - 40D - 50D pattern that its naming might suggest. Instead it sits pretty well precisely in the same market position as was once-upon-a-time occupied by the 'Elan' series of 35mm film SLRs (which in Europe were not-so-coincidentally given double-digit model numbers).
So gone is the magnesium alloy construction that featured in previous models, replaced by a lighter weight plastic shell. Naturally the 60D gains some key 'step up' features from the Rebel line (top panel LCD, rear control dial, higher burst rate), including a few that have trickled down from the EOS 7D. There's also a video- (and tripod-) friendly 3:2 ratio articulated LCD. In imaging terms it brings the EOS mid-range in line with those above and below by upping the sensor resolution to around 18MP and adding full HD movie capture.
The EOS 60D also gains a couple of brand-new features of its own. There's now a wide range of color variations (or 'Ambiences') which can be applied to the image when using the scene modes, and whose effect can be previewed on screen in Live View. The 60D also finally gains the ability to convert raw files to jpeg in-camera, including the option to correct for lens aberrations including distortion and chromatic aberration. As an added bonus, you can retrospectively apply new 'Creative Filters' to files you've shot, including 'Grainy Black and White' and 'Toy Camera' looks.
And so, from a spec and feature point of view, the EOS 60D sits almost exactly half-way between the EOS 550D and the EOS 7D, with a few new tricks of its own. Which, we think, is exactly where it should be (regardless of the inevitable howls of protest at the apparent 'dumbing down' of the venerable X0D line).
Key features
- 18MP APS-C CMOS sensor
- ISO 100-6400 (expandable to 12,800)
- 5.3 fps continuous shooting
- 1080p HD video recording with manual controls
- SD / SDHC / SDXC storage
- In-camera raw development
- Subject modes with 'Ambience Selection' (Standard, Vivid, Soft, Warm, Intense, Cool, Brighter, Darker and Monochrome)
- In-camera Creative Filters (special effects)
- Fully articulated 3.0" screen (3:2)
Canon EOS 60D vs 50D: Key Differences
Placing the 50D alongside the 60D it becomes clear that the new camera is not a simply a direct upgrade but a repositioned model. The most obvious difference is that it's smaller and, of course, no longer features a metal body.- Higher resolution sensor (17.9MP vs. 15.1MP)
- Accepts SD, rather than CF memory cards
- No flash sync socket
- Wireless Speedlight control
- Support for optional infra-red remote release
- Articulated 3:2 high resolution LCD screen
- Plastic body shell (8% weight saving)
- Standard ISO range extends to 6400, rather than 3200
- User-definable Auto ISO upper limit
- HD video recording 1080 p30/25/24 or 720p60/50 plus cropped 640 x 480 movie mode
- New features: in-camera raw conversion, ambience settings, creative filters, more JPEG options
- No joystick, no multi-flash support, simplified top plate & info panel, only one Custom mode, no AF micro-adjust
- Slightly reduced customization options
- Redesigned control layout with slightly fewer buttons
- Lower burst rate
Compared to the EOS 50D and EOS 7D: core feature and specification differences
As you can see from the table below the 60D is not an unequivocal upgrade from the 50D in the same way that previous cameras in the range have been. Essentially it's a 50D in a smaller body, the includes a flip-out screen and the sensor used in the Rebel T2i (550D) and 7D, with all the HD movie recording capability that brings.Canon EOS 60D |
Canon EOS 7D |
Canon EOS 50D |
|
---|---|---|---|
Construction | Polycarbonate resin with glass fibre on aluminum chassis | Magnesium alloy body | Magnesium alloy body |
Sensor | • 22.3 x 14.9 mm CMOS sensor • RGB Color Filter Array • Built-in fixed low-pass filter (with self-cleaning unit) • 19 million total pixels • 18 million effective pixels • 3:2 aspect ratio |
• 22.3 x 14.9 mm CMOS sensor • RGB Color Filter Array • Built-in fixed low-pass filter (with self-cleaning unit) • 19 million total pixels • 18 million effective pixels • 3:2 aspect ratio |
• 22.3 x 14.9 mm CMOS sensor • RGB Color Filter Array • Built-in fixed low-pass filter (with self-cleaning unit) • 15.5 million total pixels • 15.1 million effective pixels • 3:2 aspect ratio |
Processor | DIGIC 4 | Dual DIGIC 4 | DIGIC 4 |
ISO range | • Auto ISO (100-6400) • ISO 100-6400 in 0.3 or 1.0 EV increments • H (12800) expansion • Adjustable Auto ISO limit |
• Auto ISO (100-3200) • ISO 100-6400 in 0.3 or 1.0 EV increments • H (12800) expansion |
• Auto ISO (100-1600) • ISO 100 - 3200 • 0.3 or 1.0 EV increments • H1 (6400) and H2 (12800) expansion |
Movie resolution | • 1920 x 1080 (29.97, 25, 23.976 fps) • 1280 x 720 (59.94, 50 fps) • 640 x 480 (59.94, 50 fps) |
• 1920 x 1080 (29.97, 25, 23.976 fps) • 1280 x 720 (59.94, 50 fps) • 640 x 480 (59.94, 50 fps) |
N/A |
AF sensor | • 9 cross-type AF points (f/2.8 at center) • Center point additionally sensitive with lenses of F2.8 or faster • AF working range: -0.5 - 18 EV (at 23°C, ISO 100) |
• 19 cross-type AF points (f/2.8 at center) • Center point additionally sensitive with lenses of F2.8 or faster • AF working range: -0.5 - 18 EV (at 23°C, ISO 100) |
• 9 cross-type AF points (f/2.8 at center) • Center point additionally sensitive with lenses of F2.8 or faster • AF working range: -0.5 - 18 EV (at 23°C, ISO 100) |
Metering sensor | • TTL full aperture metering with 63 zone Dual Layer (iFCL) • Metering range: EV 1 - 20 EV |
• TTL full aperture metering with 63 zone Dual Layer SPC • Metering range: EV 1 - 20 EV |
• TTL 35 zone SPC • Metering range: EV 0.0 - 20 EV |
Viewfinder | • Eye-level pentaprism • 96% frame coverage • Magnification: 0.95x • Eyepoint: 22 mm • Interchangeable focusing screen Ef-A standard (2 other types optional) • Dioptric adjustment: -3.0 to +1.0 diopter |
• Eye-level pentaprism • 100% frame coverage • Approx. 1.0x magnification • Eyepoint: 22 mm • Fixed screen (Transmissive LCD screen) • Dioptric adjustment: -3.0 to +1.0 diopter |
• Eye-level pentaprism • 95% frame coverage • Magnification: 0.95x • Eyepoint: 22 mm • Interchangeable focusing screen Ef-A standard (2 other types optional) • Dioptric adjustment: -3.0 to +1.0 diopter |
LCD panel | • 3.0 " TFT LCD • 1040,000 dots (3:2) • 100% coverage • 160 ° viewing angle • Dual anti-reflection • Articulated |
• 3.0 " TFT LCD • 920,000 dots (4:3) • 100% coverage • 160 ° viewing angle • Coating : Anti-reflection and Solid Structure |
• 3.0 " TFT LCD • 920,000 dots (4:3) • 100% coverage • 160 ° viewing angle • Dual anti-reflection |
Continuous shooting buffer | • Approx. 5.3 fps • Up to 58 JPEGs, 16 images (RAW) |
• Approx. 8 fps • Up to 126 JPEGs (with UDMA card), 15 images (RAW) |
• Approx. 6.3fps • Up to 90 frames (with UDMA card), 16 frames (RAW) |
Memory format | • SD / SDHC / SDXC | • Compact Flash (I, II and UDMA) | • Compact Flash (I, II and UDMA) |
Dimensions | 145 x 106 x 79 mm (5.7 x 4.2 x 3.1 in) |
148 x 111 x 74 mm (5.8 x 4.3 x 2.8 in) |
146 x 108 x 74 mm (5.7 x 4.2 x 2.9 in) |
Weight (inc battery) | 755 g (1.6 lb) | 904 g (2.0 lb) | 822 g (1.8 lb) |
Foreword / notes
If you're new to digital photography you may wish to read some of our Digital Photography Glossary before diving into this article (it may help you understand some of the terms used).Conclusion / recommendation / ratings are based on the opinion of the author, we recommend that you read the entire review before making any decision. Images which can be viewed at a larger size have a small magnifying glass icon in the bottom right corner of them, click to display a larger image in a new window.
To navigate this article simply use the next / previous page buttons or jump to a specific page by using the drop-down list in the navigation bar at the top of the page. You can support this site by ordering through the affiliate links shown at the bottom of each page (where available).
This article is protected by Copyright and may not be reproduced in part or as a whole in any electronic or printed medium without prior permission from the author.
Dpreview use calibrated monitors at the PC normal gamma 2.2, this means that on our monitors we can make out the difference between all of the grayscale blocks below. We recommend to make the most of this review you should be able to see the difference (at least) between X,Y and Z and ideally also A, B and C.
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