Why does this effect occur mainly with black fabrics?

When textiles are coloured black, this is achieved by a high degree of colour saturation. To do so, highly concentrated magenta (dark violet), blue black, or brown red is use in the colouring bath...

When textiles are coloured black, this is achieved by a high degree of colour saturation. To do so, highly concentrated magenta (dark violet), blue black, or brown red is use in the colouring baths. Especially in the case of modern synthetic fabrics such as polyamide, polyester, and polyurethane
compounds a true black colouring involves enormous problems. Due to the human eye’s imperfection the viewer registers these colours as black – even though it is only e.g. deep dark violet. Under incandescent lighting especially, these fabrics do not appear black, but rather display a distinct colour shift towards violet or also brown violet. As a result of its above-average sensitivity for infrared light, the LEICA M8 “sees” these “red” fabrics quite intensely.

Do the UV/IR filters interfere with other filters such as polarisers?

Combinations of filters, i.e. polarisers and UV/IR filters can be used in conjunction without restrictions. The order in which the light travels through the filters is also irrelevant.

Combinations of filters, i.e. polarisers and UV/IR filters can be used in conjunction without restrictions. The order in which the light travels through the filters is also irrelevant.

Are there any seasonal effects that must be considered?

In winter indoor shots under incandescent light are more common. Since these light sources have a stronger infrared proportion, the annoying effect of black colours reproduced in magenta can be ex...

In winter indoor shots under incandescent light are more common. Since these light sources have a stronger infrared proportion, the annoying effect of black colours reproduced in magenta can be expected more often. In spring and summer there are stronger IR reflections from the chlorophyll in green vegetation.
This can lead to a yellowish

Does this problem also affect me in B/W photography with the Leica M8?

If you intend to do B/W photography with your Leica M8, the camera’s increased infrared sensitivity does not come into effect. Only synthetic black fabrics are rendered slightly brighter than they...

If you intend to do B/W photography with your Leica M8, the camera’s increased infrared sensitivity does not come into effect. Only synthetic black fabrics are rendered slightly brighter than they appear to the eye. This phenomenon was not considered to be important in any of the investigated cases.

I had some reddish corners in pictures taken with my LEICA TRI-ELMAR-M 16-18- 21mm/f4 ASPH in spite of the fact that I used a UV/IR filter and set the menu item “Lens Detection” to “On with UV/IR”. What did I do wrong?

Probably a shorter focal length was set in the menu than on the lens, leading to an overcompensation. Please make sure that both the focal length set on the lens and in the menu are the same.

Probably a shorter focal length was set in the menu than on the lens, leading to an overcompensation. Please make sure that both the focal length set on the lens and in the menu are the same.

When taking a picture with the camera coming from stand-by, 0/0 is displayed in the bar above the automatically replayed image.

The LEICA M8 takes approx. 1 second to power up. It takes approx. 3-4 seconds to read the SD card completely. If the shutter is released before the card is read completely, information on the card...

The LEICA M8 takes approx. 1 second to power up. It takes approx. 3-4 seconds to read the SD card completely. If the shutter is released before the card is read completely, information on the card is not accessible. In such cases the automatically replayed image will be referred to as number 0/0, but, when the camera is switched to permanent reviewing, the camera will show the correct image number.

Why isn’t it possible to select lower sensitivities than ISO 160, e.g. ISO 100 and 50?

The basic sensitivity of the LEICA M8’s sensor is ISO 160. Lower settings would reduce the dynamic bandwidth and thus impair image quality.

The basic sensitivity of the LEICA M8’s sensor is ISO 160. Lower settings would reduce the dynamic bandwidth and thus impair image quality.

Bright sources of light near the image edges occasionally lead to a green stripe reaching all the way to the centre of the image.

Leica is aware of this effect and its cause. Unfortunately, it won’t be possible to eliminate this effect with a firmware update. The stripes can be avoided, if it is paid attention that very brigh...

Leica is aware of this effect and its cause. Unfortunately, it won’t be possible to eliminate this effect with a firmware update. The stripes can be avoided, if it is paid attention that very bright light sources (such as headlights etc.) are not reproduced at the very edge of the image.

The automatic white balance does not always function satisfactorily.

From firmware version 1.201, greatly improved algorithms for the automatic white balance have been integrated. This improvement allows colour-neutral images under almost all lighting conditions. In...

From firmware version 1.201, greatly improved algorithms for the automatic white balance have been integrated. This improvement allows colour-neutral images under almost all lighting conditions. In comparison to former firmware versions, the writing time will be slightly longer (approx. +1.3 seconds with „fast“ cards), if JPG or DNG+JPG was chosen as the output format. If images are taken in the DNG format, the writing time will remain unchanged.

Why is there an option to disable the lens detection when, according to my experience, it makes no difference?

If uncoded lenses are used with this option active a false code may be “recognised”, because with some lenses, there is a screw in exactly that position in the bayonet flange. This may lead to faul...

If uncoded lenses are used with this option active a false code may be “recognised”, because with some lenses, there is a screw in exactly that position in the bayonet flange. This may lead to faulty results as was the case several times during internal tests.

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