File:Vertagopus arboreus (31774590213).jpg
Original file (3,400 × 2,600 pixels, file size: 2.14 MB, MIME type: image/jpeg)
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Summary
[edit]DescriptionVertagopus arboreus (31774590213).jpg |
This is the first usable field image I have managed to produce with the Canon MP-E 65mm macro lens. The Fotodiox Pro converter works very well on this manual lens, no need for the expensive Metabones. (Hmm, there's a bit of a cheapskate theme developing here...) Some thoughts: The problem with this lens is twofold. As with all macro lenses it has a very shallow depth of field. No seriously, very shallow. At 5x magnification and f2.8 (wide open), the d.o.f. is approximately 0.2mm. So obviously, you stop down to f16. And that's when the problem starts. You can just about get away with f16 at 1x magnification, but at 5x by the time the light hits the sensor, you've magnified the diffraction to the point where the image is unusable. Workable combinations are something like: 1x: f11-16 2x: f8-11 3x: f6.3-8 4x: f5.6-6.3 5x: f4-5.6 That means that at higher magnifications, you're working with tiny d.o.f. No problem - focus stacking! Yes, for dead specimens in a studio - good luck with that for live springtails in the field. "Oh, he's just complaining again. Whack it on f5.6, no problem." F5.6 is a fine aperture, one of my personal favourites. A nice landscape shot, half the frame filled with sky, no problem. But there's no point in pointing the MP-E 65mm at the sky - the furthest it can focus is a few inches away from the front element. And with macro, we're not pointing at the sky anyway, but grubbing around in hedge bottoms, pointing the lens downwards. Even without all this the MP-E 65mm seems to be a rather light-hungry lens, i.e. compared with the results from the same aperture on a wide angle lens. So we need a lot of light. Direct sunlight would do the trick, but when you're only an inch away from a frisky insect, you'll be blocking ambient light most of the time. So my next step is to build a lighting rig for this lens in the field. I'm too tight to shell out £800 for the Canon MT-24EX Macro Twin Lite Flash and I don't know if it would work on the Sony anyway. So it's DIY - the parts are on order from eBay. |
Date | |
Source | Vertagopus arboreus |
Author | AJC1 |
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This image was originally posted to Flickr by AJC1 at https://flickr.com/photos/47353092@N00/31774590213. It was reviewed on 27 September 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
27 September 2021
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current | 06:52, 27 September 2021 | 3,400 × 2,600 (2.14 MB) | Vis M (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | SONY |
---|---|
Camera model | ILCE-6000 |
Exposure time | 1/100 sec (0.01) |
F-number | f/2.8 |
ISO speed rating | 3,200 |
Date and time of data generation | 12:08, 29 January 2017 |
Lens focal length | 65 mm |
Width | 3,400 px |
Height | 2,600 px |
Bits per component |
|
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
Software used | Adobe Photoshop CS5 Macintosh |
File change date and time | 17:25, 29 January 2017 |
Exposure Program | Normal program |
Exif version | 2.3 |
Date and time of digitizing | 12:08, 29 January 2017 |
APEX shutter speed | 6.643856 |
APEX aperture | 2.970854 |
APEX brightness | −0.6859375 |
APEX exposure bias | 0 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Color space | Uncalibrated |
Focal plane X resolution | 2,553.1914978027 |
Focal plane Y resolution | 2,553.1914978027 |
Focal plane resolution unit | 3 |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 97 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Lens used | 65mm F2.8 G SSM |
Date metadata was last modified | 17:25, 29 January 2017 |
Rating (out of 5) | 0 |
Unique ID of original document | E29D29DBA0F7CF0091D3162DF93877CE |