Hot Spot


Lenti compatibili per la fotografia infrarosso

Generalmente viene chiamato hot spot in punto caldo che viene a formarsi nel centro del fotogramma con diaframmi chiusi .Di solito si manifesta nella forma di un cerchio luminoso, talvolta a forma dell'apertura del diaframma piu o meno evidente nel centro dell'immagine.Il problema , se presente in un ottica , e' piu evidente con l'aumentare del numero f stop "diaframmi " , quindi piu si chiude il diaframma e piu e' piu evidente l Hotspot.

Hot spot

Gli obiettivi fotografici sono progettati normalmente per la fotografia nel campo di luce del visibile , talvolta possono comportarsi nell infrarosso in maniera diversa.In questa pagina si descrive i problemi di lenti più comuni quando si fotografa nello spettro Dell infrarosso.

Lista di lenti che non presentano Hotspot nell immagine


Nikon

No Hotspot

Nikon 10.5mm Fisheye f/2.8 G ED AF DX

Nikon 10-24mm f/3.5-4.5 G ED AF-S DX

Nikon 14 mm f/2.8 AF-D ED

Nikon 14-24 mm f/2.8 AF-S G IF-ED

Nikon 15mm f/5.6 QDC Pre-AI

Nikon 16mm Fisheye f/2.8 AF-D

Nikon 16mm Fisheye f/2.8 AI*

Nikon 16-35mm f4 G ED VR AF-S

Nikon 16-85mm f/3.5-5.6 G ED VR AF-S

Nikon 17-35mm f/2.8 ED-IF AF-S

Nikon 17-55 mm f/2.8 G ED-IF AF-S DX*

Nikon 18 mm f/3.5 AI-S

Nikon 18-35 mm f/3.5-4.5 AF-D IF-ED*

Nikon 18-55 mm f/3.5-5.6 G AF-S DX ED

Nikon 18-70 mm f/3.5-4.5 G IF ED AF-S DX *

Nikon 18-105 mm f/3.5-5.6 G ED AF-S VR DX *

Nikon 18-105mm f/2.5-5.6 G ED-IF AF-S VR DX

Nikon 18-135mm f/3.5-5.6G ED-IF AF-S DX

Nikon 18-200mm f/3.5-5.6 G ED-IF AF-S VR DX

Nikon 20 mm f/2.8 AI-S

Nikon 20 mm f/2.8 AF

Nikon 20 mm f/2.8 AF-D

Nikon 20 mm f/3.5 AI-S

Nikon 20mm f/4 (pre-AI, AI)*

Nikon 24mm f/2 AI-S*

Nikon 24mm f/2.8 AF-D*

Nikon 24mm f/2.8 AI-s

Nikon 24mm f/3.5 PC-E D ED

Nikon 24 mm f/3.5 PC-E D ED

Nikon 24-70 mm f/2.8 G ED-IF AF

Nikon 24-85 mm f/2.8-4 IF AF-D

Nikon 28mm f/1.4 AF-D

Nikon 28mm f/1.8G AF-S (bad hotspot after f5.6)

Nikon 28mm f2 AI

Nikon 28 mm f/2.8 (AI, AI-S)*

Nikon 28mm f2.8 AF-D*

Nikon 28mm f/3.5 (AI, AIS)

Nikon 28-70 mm f/2.8 AF-S D IF ED

Nikon 28-80 mm f/3.3-5.6 G

Nikon 28-200mm f/3.5-5.6 G IF ED

Nikon 35 mm f/1.8 G AF-S DX* (hotspot at f11 and smaller)

Nikon 35mm f/2 Pre-AI *

Nikon 35mm f/2.8 Pre-AI *

Nikon 35mm f/2 (AI, AIS)*

Nikon 35mm f/2 AF-D

Nikon 35mm f/2.5 Series E AI

Nikon 35-70 mm f/2.8 AF

Nikon 35-70 mm f/2.8 AF-D

Nikon 35-70 mm f/3.3-4.5 AF

Nikon 35-70mm f/3.5 AI

Nikon 35-135 mm f/3.5-4.5 AF

Nikon 35-105mm f/3.5~4.5s Zoom-Nikkor Ai-S MACRO

Nikon 45mm f/2.8 GN Auto Nikkor

Nikon 45mm f/2.8 AI-P

Nikon 45mm f/2.8D ED PC-E (very good from f2.8 to f11, mild hotspot starting at f16)

Nikon 50mm f/1.2 AI-S (hotspot at f4, but at f2.8 very good)

Nikon 50 mm f/1.4 AF-D

Nikon 50mm f/1.4 G

Nikon 50 mm f/1.8 AIS*

Nikon 50 mm f/1.8 AF *

Nikon 50 mm f/1.8 AF-D (can start to hotspot around f8/f11)

Nikon 50mm f/2 (H-HC) Pre- AI *

Nikon 50mm f/2 (pre AI, AI)*

El Nikkor 50mm f/4 Enlarger lens (very crisp with absolutely no flare)

Nikon 55mm f/3.5 Pre-AI *

Nikon 58 mm f/1.2 Noct-Nikkor AI *

Nikon 70-80 mm f/4.5-5.6 ED AF-D VR Micro

Nikon 70-180 mm f/4.5-5.6 ED AF Micro

Nikon 70-200 mm f/2.8 G IF-ED VR AF-S

Nikon 70-210 mm f/4-5.6 AF

Nikon 70-300 mm f/4.5-5.6 G ED-IF AF-S VR

Nikon 80mm f/2.8 AF IF

Nikon 80-200mm f/2.8D ED AF

Nikon 85mm f/1.4 AI-S

Nikon 85mm f/1.4 IF AF-D

Nikon 85mm f/1.8 AF-D

Nikon 85mm f/2.8 PC Micro

Nikon 85mm f/2.8 PC-E Micro

Nikon 85mm f/2.8 (AF/AIS)

Nikon 85mm f/2 (AI/AIS)

Nikon 85mm f/2.8 D PC-E Micro

Nikon 86mm f/1.8 Pre-AI

Nikon 105mm f/1.8 AIS

Nikon 105mm f/2.0D AF DC (no hotspots to at least f11, very sharp)

Nikon 105mm f/2.5 (Pre-AI, AI, AIS)

Nikon 105mm f/2.5 Nikkor PC AIS

Nikon 105mm f/2.8G AF-S VR IF-ED

Nikon 105 mm f/2.8 AF-D – Micro (mild hotspot starting at f16)

Nikon 105mm f/4 AIS Micro

Nikon 105mm f/4.5 UV-Nikkor

Nikon 105mm f/4 Bellows

Nikon 135mm f/2.8 Pre-AI

Nikon 135mm f/2 AI-S

Nikon 135mm f/2 AF DC

Nikon 200mm f/2 ED IF (AI, AIS)

Nikon 200mm f/2 G ED IF VR AF-S

Nikon 200 mm f/4 AF-D IF ED Micro *

Nikon 200mm Nikkor Q f/4 (Pre-AI)

Nikon 300mm f/4.5 ED-IF AI

Nikon 300mm f/4.5 ED IF AI-S

Nikon 300mm f/2.8 ED-IF AF-S (no hotspots but a little softer for IR)

Nikon 400mm f/3.5 ED-IF (AI, AIS)

Canon

No Hotspot

Canon EF-S 10-22 mm f/3.5-4.5 USM*    
Canon EF-S 10-18mm f/4.5-5.6 IS STM
Canon EF 14mm f/2.8 USM  
Canon EF 14mm f/2.8 II *
Canon EF 15mm f/2.8 Fisheye*
Canon EF 16-35mm f/4L IS USM  
Canon TS-E 17mm f/4 L
Canon EF 17-35mm f/2.8 L  
Canon EF 17-40mm f/4 L
Canon EF-S 17-55 mm f/2.8 IS USM (f16+)  
Canon EF-S 17-85mm f/4-5.6 IS*
Canon EF-S 18-55mm f/3.5-5.6  
Canon EF-S 18-55mm f/3.5-5.6 IS II*
Canon EF-S 18-135mm f/3.5-5.6 IS  
Canon EF 20mm f/2.8 USM*
Canon EF 22-55mm f/4-5.6 USM    
Canon EF 24-70mm f/2.8 L USM
Canon EF 24-105mm f/4 L IS USM*    
Canon TS-E 24mm f/3.5 L  
Canon EF 28mm f/1.8 USM  
Canon EF 28mm f/2.8
Canon EF 28-70mm f/305-4.5 II  
Canon EF 28-80mm USM  
Canon EF 28-105mm f/3.5-4.5 II USM        
Canon EF 28-135mm f/3.5-5.6 IS USM*        
Canon EF 35mm f/1.4L USM        
Canon EF 40mm f2.8 STM        
Canon EF 35mm f/1.4 L USM*        
Canon EF 35mm f/2        
Canon EF 50mm f/1.0 L USM        
Canon EF 50mm f/1.8        
Canon EF 50mm f/1.8 II        
Canon EF 50-200 f/3.5-4.5 L USM        
Canon EF 55-200mm f/4.5-5.6 II USM        
Canon EF-S 55-250mm 1:4-5.6 IS        
Canon EF-S 60mm 1:2.8 macro        
Canon EF 70-200 mm f/4 L USM        
Canon EF 70-300mm f/4-5.6 IS USM        
Canon EF 75-300mm f/4-5.6 IS USM        
Canon EF 80-200 mm f/2.8 L        
Canon EF 85mm f/1.2 II L *        
Canon TS-E 90mm f/2.8        
Canon EF 100mm f/2.8 L IS USM Macro (after f16)        
Canon EF 100mm f/2 USM        
Canon EF 100mm f/2.8 Macro        
Canon EF 100-300mm f/5.6 L        
Canon EF 100-400mm f/4.5-5.6 L IS USM        
Canon EF 135 mm f/2 L USM        
Canon EF 135mm f/2.8 sf        
Canon EF 180mm f3.5L Macro USM        
Canon EF 200mm f/2 L IS USM*        
Canon EF 200 mm f/2.8 L USM *        
Canon EF 300 mm f/4 L USM        
Canon EF 400mm f/2.8 L IS USM        
Canon EF 400mm f/5.6 L USM        
Canon EF 500 mm f/4 L IS USM    

Sigma

No Hotspot

  Sigma 8mm f4 EX DG Fisheye    
Sigma 10-20mm f/3.5 EX DC HSM ELD SLD
Sigma 12-24mm f/4.5-5.6 EX DG I*
Sigma 14mm f2.8 EX HSM  
Sigma 15mm f/2.8 EX DG
Sigma 15-30 mm f/3.5-4.5 EX DG  
Sigma 17-70mm f/2.8-4.5 DC Macro  
Sigma 18mm F3.5
Sigma 18-50mm f/3.5-5.6 DC  
Sigma 20mm f/1.8 EX DG  
Sigma 24mm f/1.8 EX ASP DG Macro
Sigma AF 24mm f/2.8 Macro  
Sigma 24-50mm F4-5.6 UC        
Sigma 24-70mm f/2.8 EX DG *        
Sigma 24-70 mm f/3.5-5.6 UC        
Sigma 28 mm f/2.8 EX        
Sigma 28mm f/2.8 (manual focus)        
Sigma 30mm F2.8 EX DN (E mount)        
Sigma 50mm f/2.8 (manual focus)        
Sigma 50-500mm f/4-6.3 EX DG HSM        
Sigma 55-200 mm f/4-5.6 DC        
Sigma 100-300mm f/4 EX DG IF HSM        
Sigma 105mm f/2.8 EX DG AF Macro*        
Sigma 105mm f/2.8 EX DG OS HSM Macro (up to f8)        
Sigma 150mm f/2.8 EX DG APO HSM Macro        
Sigma 180mm f/3.5 EX HSM APO macro (non DG)        
Sigma 400mm f/5.6