Stockholm Makerspace Wiki

Canontst 2: Skillnad mellan sidversioner

Sida Diskussion

Canontst 2 (visa wikitext)

Versionen från 21 maj 2026 kl. 10.13

11 845 togs bort ,  10.13
ingen redigeringssammanfattning
VisuellWikitext
Ingen redigeringssammanfattning
Ingen redigeringssammanfattning
Märke: Manuell återställning
Rad 1: Rad 1:
{{DISPLAYTITLE:Canon EOS 750D}}
== 📷 Canon EOS 750D (Rebel T6i / Kiss X8i) ==
__TOC__
A beginner’s quick-start guide for the Makerspace. ''Less history, more shooting.''


= Canon EOS 750D =
<div style="overflow:auto; margin:20px 0;">
{| style="width:100%; border-spacing:10px;"
|- style="vertical-align:top;"
| style="width:50%; background:#f8f9fa; padding:20px; border-radius:8px;" |


[[File:Canon-EOS-750D.jpg|thumb|right|300px|Canon EOS 750D with kit lens 18–55mm]]
=== ⚙️ The Makerspace Bit: Sensor & Tech ===
The 750D has an '''APS-C sensor''' (22.3 × 14.9 mm). This is smaller than full-frame, which means:


The '''Canon EOS 750D''' (also sold as the '''Rebel T6i''' in North America and '''Kiss X8i''' in Japan) is a 24.2&nbsp;MP APS-C DSLR released in February 2015. It is available at the makerspace as a shared resource — great for product shots, documentation, macro work and experimenting with photography fundamentals.
*  '''1.6× crop factor''' – a 50mm lens looks like an 80mm lens
*  '''24.2 megapixels''' – plenty for large prints or cropping
*  '''ISO 100–12800 (expandable to 25600)''' – usable range for most indoor projects
*  '''1080p video at 30/25/24 fps''' – good enough for documenting builds


{{Ambox
'''Key takeaway for makers:''' The crop factor is your friend for close-up project shots (less working distance needed), but it struggles in very low light unless you add workshop lighting.
| type  = notice
| text  = '''New to the camera?''' Start at [[#The Mode Dial|The Mode Dial]] and ignore everything else. Come back to the rest when you're curious.
}}


----
|| style="width:50%; background:#f0f4f8; padding:20px; border-radius:8px;" |


== The Mode Dial ==
=== 🎛️ Just Tell Me What to Set ===
'''Mode dial to “P” if you want point-and-shoot.'''<br/>
Want a bit more control? Try these:


The big dial on top controls ''how much'' the camera thinks for you versus how much you control manually.
*  '''Av (Aperture Priority):''' For blurry backgrounds. Set aperture to the lowest number (e.g., f/3.5) and let the camera do the rest.
*  '''Tv (Shutter Priority):''' For freezing motion (machines, people). Set to 1/250 sec or faster.
*  '''ISO:''' Keep on '''Auto ISO'''. The camera is smart enough.
*  '''Focus:''' Set lens to '''AF''' (Autofocus). Use the touchscreen to tap what you want sharp.
*  '''Picture Style:''' Set to '''🖼️ Standard''' or '''🌄 Landscape''' for punchy maker-project photos.


{| class="wikitable" style="width:100%"
'''Pro move:''' Flip the screen out and use '''Live View''' (the 📷 button near the viewfinder). Touch the screen to take a photo—like a giant phone.
! Symbol !! Name !! What it does !! Best for
|-
| <big>'''AUTO''' / &#x1F7E2;</big> || Scene Intelligent Auto || Camera decides everything || Absolute beginners, snapshots
|-
| <big>'''CA'''</big> || Creative Auto || Auto, but you can nudge blur and brightness || Getting comfy with creative choices
|-
| <big>'''P'''</big> || Program AE || Camera sets exposure, you control ISO + flash || General use once you know a little
|-
| <big>'''Tv'''</big> || Shutter Priority || ''You'' set shutter speed, camera sets aperture || Moving subjects, light trails, freezing motion
|-
| <big>'''Av'''</big> || Aperture Priority || ''You'' set aperture, camera sets shutter speed || Portraits, product shots, controlling depth of field
|-
| <big>'''M'''</big> || Manual || You control everything || Studio work, full creative control
|-
| <big>&#x263C;</big> / &#x1F315; || Scene modes || Presets for Portrait, Landscape, Sports, etc. || Quick situational shooting
|-
| <big>&#x25B6;</big> || Movie || Video recording mode || Video, obviously
|}
|}
</div>


{{Tip|'''Start with Av.''' Set your aperture, let the camera handle the rest. It's the most useful "one foot in" mode and teaches you the most about how lenses work.}}
== 📸 The Two GIFs That Explain Everything ==
''(If you can't see the animations, imagine these static diagrams moving.)''


----
{| style="width:100%; border-spacing:15px;"
|- style="vertical-align:top;"
| style="width:50%; background:#fff; padding:15px; border:1px solid #ddd; border-radius:8px;" |
=== 🔆 Aperture (How blurry your background is) ===
[[File:Aperture_diagram.gif|center|300px|Aperture blades opening and closing]]<!-- Replace with your actual GIF file name -->
*  '''Small number (f/2.8)''' = Big hole, lots of light, blurry background
*  '''Large number (f/16)''' = Small hole, less light, everything in focus
On the 750D: Hold the '''Av ± button''' and turn the main dial to change.


== The Exposure Triangle ==
| style="width:50%; background:#fff; padding:15px; border:1px solid #ddd; border-radius:8px;" |
 
=== 🔭 Focal Length / Field of View (How zoomed-in you are) ===
Every photo is determined by three settings working together. Change one, and the others are affected.
[[File:Focal_length_comparison.gif|center|300px|Animation showing same scene from wide-angle to telephoto]]<!-- Replace with your actual GIF file name -->
*  '''18mm''' = Wide. Fits the whole workbench in.
*  '''55mm''' = Zoomed. Just the detail on the PCB.
*  '''250mm''' (if you have the big lens) = Very zoomed. See the engraving on that chip from across the room.
On the kit lens: Just twist the zoom ring.
|}


== 🏷️ Quick Reference Card ==
{| class="wikitable" style="width:100%; text-align:center;"
{| class="wikitable" style="width:100%; text-align:center;"
! colspan="3" | &#9651; The Exposure Triangle
|-
! [[#Aperture &#x2109; (f-stop)|&#x25CE; Aperture]] !! [[#Shutter Speed &#x1F4F7;|&#x23F1; Shutter Speed]] !! [[#ISO &#x25A6;|&#x2609; ISO]]
|-
| Controls ''how much light'' enters through the lens and ''depth of field'' || Controls ''how long'' the sensor is exposed to light || Controls the sensor's ''sensitivity'' to light
|}
=== Aperture &#x25CE; (f-stop) ===
Written as '''f/2.8''', '''f/5.6''', '''f/16''', etc. Counter-intuitively: '''smaller number = bigger opening = more light + blurrier background.'''
{{Quote|'''Visual demo:''' [https://i.imgur.com/HnkSMJp.gif &#x25BA;&nbsp;See how aperture affects depth of field (animated gif)] — notice how the depth of field compresses as the aperture closes down. [https://www.reddit.com/r/Filmmakers/comments/4adabh/aperture_gif/ Original thread]}}
{| class="wikitable"
! f-stop !! Aperture size !! Depth of field !! Light !! Typical use
|-
| f/1.8 – f/2.8 || &#x25CF; Large || Very shallow (blurry BG) || &#x2B50;&#x2B50;&#x2B50; Lots || Portrait, low light
|-
| f/4 – f/5.6 || &#x25D5; Medium || Moderate || &#x2B50;&#x2B50; Some || General, kit lens sweet spot
|-
| f/8 – f/11 || &#x25CB; Small || Deep (most things sharp) || &#x2B50; Less || Landscapes, product shots
|-
| f/16 – f/22 || &#x25CC; Tiny || Very deep || Minimal || Macro stacking, architecture
|}
{{Note|The kit lens (18–55mm) opens to f/3.5 at wide end and f/5.6 zoomed in. For seriously blurry backgrounds, look for prime lenses with f/1.8 in the makerspace lens bag.}}
=== Shutter Speed &#x23F1; ===
Written as '''1/500''', '''1/60''', '''2"''' etc. '''Faster = freezes motion. Slower = motion blur + camera shake.'''
{| class="wikitable"
! Speed !! Effect !! Notes
|-
| 1/1000 and faster || Freezes fast motion || Sports, machines in motion
|-
| 1/250 – 1/500 || Freezes normal motion || Walking people, everyday use
|-
| 1/60 – 1/125 || Slight blur possible || Handheld safe zone with IS lens
|-
| 1/30 and slower || Motion blur / light trails || Use a tripod. Anything below 1/focal length = shake risk.
|-
| Bulb (B) || Open as long as you hold || Star trails, lightning, long exposures
|}
{{Warning|The 750D syncs flash at max '''1/200 s'''. Faster than that with flash = black bar across your image.}}
=== ISO &#x2609; ===
'''Higher ISO = brighter image + more grain (noise). Use the lowest ISO that gives a properly exposed shot.'''
{| class="wikitable"
! ISO !! Noise !! Use when…
|-
| 100 – 400 || &#x2713; Clean || Outdoors, good light, studio
|-
| 800 – 1600 || Slight grain || Indoors, cloudy, dim makerspace
|-
| 3200 – 6400 || Visible grain || Low light, concerts, candid
|-
| 12800 – H25600 || Heavy grain || Emergency only — noticeably soft
|}
----
== Field of View &amp; Crop Factor ==
{{Quote|'''Visual demo:''' [https://i.imgur.com/0dj09Bb.jpg &#x25BA;&nbsp;See how sensor size affects field of view (comparison image)] — notice how the same lens covers a different angle depending on sensor size. [https://www.reddit.com/r/photography/comments/t5ldg/i_dont_think_i_have_ever_seen_a_better_example_of/ Original thread]}}
The 750D has an '''APS-C sensor''' (22.3 × 14.9&nbsp;mm), which is smaller than a full-frame (35mm) sensor. This means lenses appear '''1.6× more zoomed in''' than they would on a full-frame camera.
{| class="wikitable" style="text-align:center;"
! Lens focal length !! Effective focal length on 750D !! Effective angle of view
|-
|-
| 18mm || ~29mm || Wide — fits in a room
! style="background:#e9ecef; width:15%;" | Symbol
! style="background:#e9ecef; width:25%;" | Meaning
! style="background:#e9ecef; width:60%;" | When to Use It
|-
|-
| 35mm || ~56mm || Close to natural human vision
| 🔴🕒 '''10"''' || Self-timer || Group photos when you have to run into the shot.
|-
|-
| 50mm || ~80mm || Short portrait length
| ⚡|| Flash || Pop it up in dim workshop corners. (Press the flash button on the side.)
|-
|-
| 85mm || ~136mm || Classic portrait
| 🔍 + / − || Exposure Compensation || If the photo looks too dark/bright on the screen, hold this and turn the dial.
|-
| 200mm || ~320mm || Strong telephoto
|}
 
This is useful for makerspace documentation: an 18–55mm kit lens at 18mm gives you a workbench-width shot in the big room.
 
----
 
== Autofocus ==
 
=== AF Modes ===
 
{| class="wikitable"
! Symbol !! Mode !! Use it for…
|-
|-
| '''ONE SHOT''' || Single autofocus — locks when you half-press &#x25C9; || Still subjects, product photography
| ◇ || Single AF point || For precise focus on one tiny thing (a screw, an LED).
|-
|-
| '''AI FOCUS''' || Auto-switches between One Shot and Servo || Mixed shooting, safe default
| ♻️|| Drive mode: Continuous || Hold the shutter down to rattle off 5 photos per second. Perfect for catching action.
|-
|-
| '''AI SERVO''' || Continuous AF — keeps tracking a moving subject || Moving people, action
| 🎥 || Movie mode || Turn the power switch past ON to the 🎥 icon. Start/stop with the Live View button.
|}
|}


=== AF Point Selection ===
== 🧼 Makerspace Borrowing Rules ==
 
#️⃣ Always return with a charged battery (charger is in the camera case).
The 750D has '''19 cross-type AF points'''. By default it uses all of them (camera picks). For product shots or portraits, manually select a single point:
#️⃣ Set lens back to '''AF''' and dial to '''P''' before you put it away.
 
#️⃣ If the card is full, don't delete everything—just tell a steward.
# Press the AF point button (top-right of viewfinder area, '''&#x25A6;''' icon)
#️⃣ Yes, you can use the Wi‑Fi. Look up “Canon Camera Connect” app. 📱📷
# Use the d-pad or touchscreen to move the point
# Half-press shutter to lock focus, then recompose if needed
 
{{Tip|For macro/close-up work on a copy stand, disable AF entirely — switch the lens barrel to '''MF''' and focus manually using live view zoom (push the magnifier button &#x1F50D; to zoom 5× or 10×).}}
 
----
 
== Metering Modes ==
 
Controls ''which part of the frame'' the camera uses to calculate exposure.
 
{| class="wikitable"
! Symbol !! Mode !! Description
|-
| &#x2299; || Evaluative || Analyses the whole scene — default, works 90% of the time
|-
| &#x25D4; || Partial || Reads ~9% at centre — useful for backlit subjects
|-
| &#x25CE; || Spot || Reads ~3.8% at centre — pin-precise, for tricky lighting
|-
| &#x2295; || Centre-weighted || Biases the centre but reads the whole frame
|}
 
----
 
== Live View &amp; Video ==
 
Press the '''&#x25B6;&#x25A0;''' switch beside the viewfinder to enter Live View. The screen flips out and rotates — useful for overhead shots on a copy stand.
 
* Touch the screen to focus on a spot
* Pinch to zoom for manual focus check
* '''Movie mode:''' turn the mode dial to &#x25B6;, press the red &#x25CF; button to record
 
'''Video specs:'''
{| class="wikitable"
! Resolution !! Frame rates !! Notes
|-
| 1080p (Full HD) || 24p / 25p / 30p || Best for general video
|-
| 720p (HD) || 50p / 60p || Smooth slow-motion at 50%
|-
| 480p (SD) || 25p / 30p || Small file sizes only
|}
 
{{Note|There is no 4K on the 750D. For 4K documentation, use a smartphone or check if the makerspace has a different camera available.}}
 
----
 
== White Balance ==
 
White balance tells the camera what ''true white'' looks like in your lighting. Wrong WB = orange/blue cast.
 
{| class="wikitable"
! Symbol !! Setting !! Use when…
|-
| '''AWB''' || Auto White Balance || Default — usually fine
|-
| &#x2600; || Daylight || Outdoors in sun
|-
| &#x2601; || Cloudy || Overcast sky
|-
| &#x1F4A1; || Tungsten / Incandescent || Old warm bulbs (goes very blue — correct for orange cast)
|-
| &#x1F4A1;&#x25A1; || White fluorescent || Strip lighting (common in makerspace rooms)
|-
| &#x26A1; || Flash || When using the popup flash
|-
| K || Kelvin || Manual colour temperature — for nerds and studios
|-
| &#x25A1; || Custom || Set from a grey card — most accurate
|}
 
{{Tip|For product documentation under the makerspace's fluorescent lights, try '''White Fluorescent''' or shoot RAW and fix it in post.}}
 
----
 
== Shooting RAW vs JPEG ==
 
{| class="wikitable" style="width:100%"
! !! RAW (.CR2) !! JPEG
|-
| '''File size''' || ~25–30 MB per shot || ~5–10 MB per shot
|-
| '''Editing flexibility''' || Maximum — recover blown highlights, fix WB, etc. || Limited
|-
| '''Straight out of camera''' || Flat, needs processing || Ready to use
|-
| '''Use for''' || Product shots, portraits, anything you'll edit || Quick documentation, web use
|}
 
Set via '''MENU → &#x25A6; (camera icon) → Image Quality'''
 
----
 
== Flash ==
 
The built-in popup flash (GN 9.4 at ISO 100) is adequate for fill flash or emergency indoor use. '''It is not flattering for portraits.'''
 
For makerspace use (3D scanning, product photography):
* Turn flash '''OFF''' — use diffused ambient light or a desk lamp
* Use the '''&#x26A1; Flash Off''' mode on the dial if you want the camera to still auto-expose without ever firing flash
 
External flash hotshoe is standard Canon E-TTL II compatible.
 
----
 
== Technical Specifications ==
 
{| class="wikitable" style="width:100%"
|+ Canon EOS 750D — Full Specifications
! colspan="2" style="background:#cc0000; color:white;" | &#x1F4F7; Sensor
|-
| Sensor type || APS-C CMOS
|-
| Sensor size || 22.3 × 14.9 mm
|-
| Crop factor || 1.6×
|-
| Effective pixels || 24.2 megapixels
|-
| Max resolution || 6000 × 4000 px (3.71 µm pixel pitch)
|-
| Aspect ratios || 3:2, 4:3, 16:9, 1:1
|-
! colspan="2" style="background:#cc0000; color:white;" | &#x23F1; Shutter
|-
| Type || Electronic focal-plane
|-
| Speed range || 1/4000 s — 30 s + Bulb
|-
| Flash sync || 1/200 s (X-sync)
|-
| Continuous shooting || 5.0 fps (180 JPEG / 7 RAW)
|-
! colspan="2" style="background:#cc0000; color:white;" | &#x1F50D; Autofocus
|-
| AF system || 19 cross-type points (Hybrid CMOS AF III)
|-
| Centre point || High-precision double cross-type at f/2.8
|-
| Live view AF || FlexiZone-Multi / Single, Face Detection, Movie Servo
|-
! colspan="2" style="background:#cc0000; color:white;" | &#x2609; Sensitivity
|-
| Native ISO range || ISO 100 – 12800
|-
| Extended ISO || H: 25600
|-
! colspan="2" style="background:#cc0000; color:white;" | &#x1F4F9; Video
|-
| Max resolution || 1920 × 1080 (Full HD) at 24/25/30p
|-
| 720p || 50p / 60p
|-
| Codec || H.264 / MPEG-4 AVC (.MOV)
|-
| External mic || 3.5 mm mini-jack &#x2713;
|-
! colspan="2" style="background:#cc0000; color:white;" | &#x1F5B5; Display
|-
| Screen || 3.0" vari-angle Clear View II TFT touchscreen, 1,040,000 dots
|-
| Viewfinder || Optical pentamirror, 95% coverage, 0.82× magnification
|-
! colspan="2" style="background:#cc0000; color:white;" | &#x1F50C; Power &amp; Body
|-
| Battery || LP-E17 Li-Ion (1040 mAh), ~440 shots per charge (CIPA)
|-
| Storage || SD / SDHC / SDXC (UHS-I)
|-
| Connectivity || Wi-Fi, NFC
|-
| Lens mount || Canon EF-S (EF lenses compatible with 1.6× crop)
|-
| Body dimensions || 132 × 101 × 78 mm
|-
| Weight (body only) || 510 g
|-
| Processor || DIGIC 6 (14-bit processing)
|-
| Metering || 63-zone iFCL + 7560-px RGB+IR sensor
|}
 
=== Sensor Size Comparison ===
 
{| class="wikitable" style="text-align:center; width:100%"
! Sensor format !! Dimensions !! Area !! Crop factor !! Example cameras
|-
| Full Frame (35mm) || 36 × 24 mm || 864 mm² || 1× || Canon 5D, Sony A7
|-
| APS-H || 28.7 × 19.1 mm || 548 mm² || 1.26× || Canon 1D (old)
|-
| '''APS-C (Canon)''' || '''22.3 × 14.9 mm''' || '''332 mm²''' || '''1.6×''' || '''EOS 750D ← you are here'''
|-
| APS-C (Nikon/Sony) || 23.5 × 15.6 mm || 367 mm² || 1.5× || Nikon D3500, Sony A6400
|-
| Micro Four Thirds || 17.3 × 13 mm || 225 mm² || 2× || Olympus OM-D, Panasonic GH5
|-
| 1" || 13.2 × 8.8 mm || 116 mm² || 2.7× || Sony RX100 series
|-
| 1/2.3" || 6.17 × 4.55 mm || 28 mm² || 5.6× || Most compact cameras / smartphones
|}
 
----
 
== Common Makerspace Use Cases ==
 
=== Product / Object Documentation ===
* Use '''Av mode''' at '''f/8 – f/11''' for maximum sharpness and depth
* ISO 100–400 if you have decent light
* Use the flip screen for overhead copy-stand shots
* White balance: '''Custom''' from a grey card, or shoot RAW
* For EinScan objects: shoot at f/8 before and after scanning — useful reference
 
=== Macro / Close-up Work ===
* Kit lens works down to ~25cm — for tighter work, use extension tubes (check lens bag)
* Manual focus + live view magnification (&#x1F50D; button)
* Use '''AI Servo''' + continuous burst if subject might move
* Aperture: f/8–f/16 for more depth (very shallow at close range)
 
=== 3D Scanning Support ===
* Shoot reference photos of subject before placing on EinScan SE turntable
* Use consistent lighting — turn off overhead flickering strips if possible (Anti-flicker mode: MENU → &#x25A6; → Anti-flicker shooting)
 
=== Workshop / Event Documentation ===
* '''AI Focus''' auto mode, ISO Auto (max 3200), Av at f/4–f/5.6
* Use the articulating screen to get interesting low angles
* Wi-Fi + Canon Camera Connect app lets you use your phone as remote shutter
 
=== Infrared / Modified Photography ===
{{Note|The 750D has a standard hot mirror (IR cut filter) installed. It is not modified for full-spectrum. If you need IR photography, check with the makerspace coordinators — this may be modified in future or an alternative body sourced.}}
 
----
 
== Known Issues ==
 
* '''Sensor banding in astrophotography:''' Horizontal banding artefacts visible under aggressive post-processing — inherent to Hybrid CMOS AF III phase-detect pixels. Not a defect, just a limitation.
* '''Dark circles (early units):''' Canon issued a recall/repair for a small batch of early 750D/760D units with circular dark patterns. Check serial number against Canon's list if shooting at small apertures in bright light.
 
----
 
== Lens Compatibility ==
 
{| class="wikitable"
! Mount !! Compatible? !! Notes
|-
| '''EF-S''' || &#x2713; Full native || Designed for APS-C — widest angle options
|-
| '''EF''' || &#x2713; Full native || Full-frame lenses work fine, with 1.6× crop
|-
| '''EF-M''' || &#x2717; No || Mirrorless mount — incompatible
|-
| '''RF''' || &#x2717; No || New Canon mirrorless — incompatible without adapter
|-
| '''Third-party EF''' || &#x26A0; Usually || Sigma/Tamron Art series generally fine; older manual primes need adapter
|}
 
----
 
== See Also ==
 
* [[Camera Techniques — Depth of Field]]
* [[Macro Photography Setup]]
* [[Product Photography Lighting]]
* [[EinScan SE — 3D Scanner]]
* [[Copy Stand Usage]]
 
----
 
== External Resources ==
 
* [https://www.usa.canon.com/support/p/eos-rebel-t6i Official Canon EOS 750D / Rebel T6i Support Page]
* [https://www.dpreview.com/reviews/canon-eos-rebel-t6i-750d dpreview full review]
* [https://www.manualslib.com/brand/canon/eos-750d/ Canon EOS 750D Manuals (ManualsLib)]
* [https://i.imgur.com/HnkSMJp.gif Aperture depth of field animation]
* [https://www.reddit.com/r/photography/comments/t5ldg/ Sensor crop factor field of view comparison]
 
----
 
{{Cameras-stub}}
[[Category:Makerspace Equipment]]
[[Category:Photography]]
[[Category:Canon Cameras]]
Rasmus Landhall
167

redigeringar

Hämtad från "https://wiki.makerspace.se/Special:Mobil_diff/9958"